IC-703 HF / VHF Amateur Transceiver Users Manual

 

INSTRUCTION MANUAL HF/50 MHz ALL MODE TRANSCEIVER i703 FOREWORD IMPORTANT Thank We understand that you have a choice of many different radios in the market place. We want to take a couple of moments of your time to thank you for mak-

ing the IC-703 your radio of choice, and hope you agree with Icoms philosophy of technology first. Many hours of research and development went into the design of your IC-703. FEATURES DSP features (AF DSP; UT-106 DSP UNIT required some version) All mode capability covering 1606 m 9.015.87 V operation Compact with detachable front panel 0.5 ppm of high frequency stability Built in antenna tuner Simple band scope function PRECAUTION R WARNING RF EXPOSURE! This device emits Radio Frequency (RF) energy. Extreme caution should be observed when operating this device. If you have any questions regarding RF exposure and safety standards please refer to the Federal Communications Commission Ofce of Engineering and Technologys report on Evalu-

ating Compliance with FCC Guidelines for Human Radio Frequency Electromagnetic Fields (OET Bulletin 65). R WARNING HIGH VOLTAGE! NEVER attach an antenna or internal antenna connector during transmis-

sion. This may result in an electrical shock or burn. R NEVER apply AC to the [DC13.8V] receptacle on the transceiver rear panel. This could cause a re or damage the transceiver. R NEVER apply more than 16 V DC, such as a 24 V battery, to the [DC13.8V] receptacle on the transceiver rear panel. This could cause a re or damage the trans-

ceiver. R NEVER let metal, wire or other objects touch any in-

ternal part or connectors on the rear panel of the trans-

ceiver. This may result in an electric shock. NEVER expose the transceiver to rain, snow or any liquids. AVOID using or placing the transceiver in areas with tem-

peratures below 10C (+14F) or above +60C (+140F). Be aware that temperatures on a vehicles dashboard can exceed 80C (+176F), resulting in permanent damage to the transceiver if left there for extended periods. AVOID placing the transceiver in excessively dusty envi-

ronments or in direct sunlight. i INSTRUCTION MANUAL READ THIS CAREFULLY before attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL. This manual contains important safety and operating in-

structions for the IC-703. EXPLICIT DEFINITIONS WORD DEFINITION RWARNING Personal injury, re hazard or electric shock may occur. CAUTION Equipment damage may occur. NOTE If disregarded, inconvenience only. No risk or personal injury, fire or electric shock. AVOID placing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation. Place unit in a secure place to avoid inadvertent use by children. During mobile operation, DO NOT operate the transceiver without running the vehicles engine. When the trans-

ceivers power is ON and your vehicles engine is OFF, the vehicles battery will soon become exhausted. Make sure the transceiver power is OFF before starting the vehicle. This will avoid possible damage to the trans-

ceiver by ignition voltage spikes. During maritime mobile operation, keep the transceiver and microphone as far away as possible from the magnetic navigation compass to prevent erroneous indications. BE CAREFUL! The rear panel will become hot when op-

erating the transceiver continuously for long periods. BE CAREFUL! If a linear amplier is connected, set the transceivers RF output power to less than the linear am-

pliers maximum input level, otherwise, the linear ampli-

er will be damaged. Use Icom microphones only (supplied or optional). Other manufacturers microphones have different pin assign-

ments, and connection to the IC-703 may damage the transceiver. Beat signals may be heard on some frequencies. These will occur as a result of circuit construction. For U.S.A. only Caution: Changes or modications to this transceiver, not expressly approved by Icom Inc., could void your authority to operate this transceiver under FCC regulations. FOREWORD i IMPORTANT i EXPLICIT DEFINITIONS i PRECAUTION i TABLE OF CONTENTS ii QUICK REFERENCE GUIDE IX Installation I 1. Grounding your Shack I 2. Installing your DC Power Supply I 3. Installing lightning protection II 4. Installing your antenna system II 5. Connect other peripheral equipment III Operation III 1. Voice III 2. CW III 3. Other convenient items IV Your rst contact IV D Getting started IV D Just listening V 1. Select the desired band V 2. Tune to the desired frequency V 3. Adjust audio output V D What are you hearing? VI 1. Verify mode VI 2. Reducing interference

(Some functions may require an optioanl unit depending on version) VI Ready to call CQ? IX 1. Setting up your Mic Gain IX 2. Speech compressor X SUPPLIED ACCESSORIES The transceiver comes with the following accessories. Qty. q Hand microphone (HM-103) .............................. 1 w DC power cable (OPC-1229) ............................. 1 e Spare fuse (FGB 4 A) ........................................ 3 r ACC cable ...........................................................1 t 3.5 (d) mm plug ...................................................1 y 6.5 (d) mm Electronic keyer plug.........................1 u Microphone hanger..............................................1 TABLE OF CONTENTS 1 PANEL DESCRIPTION 110 Front panel 1 Multi-function switches 4 D M1 functions 4 D M2 functions 4 D M3 functions 4 D M4 functions 5 D S1 functions 6 D S2 functions 6 D S3 functions 6 DS4 functions

(UT-106 is required for some version) 6 Rear panel 7 D DATA socket 8 D ACC socket 8 Function display 9 Microphone (HM-103) 10 2 INSTALLATION AND CONNECTIONS 1116 Unpacking 11 Selecting a location 11 Grounding 11 Antenna connection 11 Installation 12 D Single body mounting 12 D Stand 12 D Front panel separation 12 D Front panel mounting 12 Required connections 13 Advanced connections 14 DC Power voltage 15 DC Power supply connections 15 Battery connections 15 External antenna tuners and linear amplier 16 q w e r t y u Icom, Icom Inc. and the dom, Germany, France, Spain, Russia and/or other countries. logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United King-

e c n e r e f e R k c i u Q 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 ii TABLE OF CONTENTS 3 BASIC OPERATION 1726 When rst applying power (CPU resetting) 17 D M1 display selection 17 Initial settings 17 VFO description 18 DThe differences between VFO and memory mode 18 Frequency setting 19 Operating mode selection 23 Volume setting 23 Squelch and receive (RF) sensitivity 24 Dial lock function 25 Basic transmit operation 25 D Transmitting 25 D Maximum output power 25 D Setting output power 26 D Setting microphone gain 26 4 RECEIVE AND TRANSMIT 2745 Operating SSB 27 D Convenient functions for receive 27 D Convenient functions for transmit 27 Operating CW 28 D Connections for CW 28 D CW operation 29 D Convenient functions for receive 30 D Convenient functions for transmit 30 D CW reverse mode 30 D CW pitch control 31 D Electronic CW keyer 31 D CW side tone function 32 D Keyer set mode 32 Memory keyer functions 33 D Memory keyer send menu 34 D Editing a memory keyer 35 D Contest number set mode 36 D Memory keyer set mode 37 Operating RTTY 38 D Connections for RTTY (FSK) 38 D RTTY (FSK) operation 38 D Convenient functions for receive 39 D RTTY reverse mode 39 D Presetting for RTTY 40 D RTTY tone set mode 40 Operating AM 41 D Convenient functions for receive 41 D Convenient functions for transmit 41 Operating FM 42 D Convenient functions for receive 42 D Convenient functions for transmit 42 D Tone squelch operation 43 D Tone scan operation 43 D FM tone set mode 44 Repeater operation 45 iii 5 FUNCTION FOR RECEIVE 4650 Simple band scope 46 Preamp and attenuator 46 RIT function 47 IF shift function 47 Noise blanker 48 D Noise blanker level set mode 48 AGC time constant 48 Optional lter selection 49 Peak meter hold 50 DSP Functions (may require an optional unit depending on version) 50 D ANF (Automatic Notch Filter) function 50 D NR (Noise Reduction) function 50 6 FUNCTION FOR TRANSMIT 5155 Split frequency operation 51 D Quick split function 52 Meter selection 52 VOX operation 53 D VOX set mode 53 Speech compressor 54 D Compression level set mode 54 SWR 55 D Measuring SWR 55 7 MEMORY OPERATION 5660 Memory channels 56 Memory channel selection 56 Memory programming 57 Memory clearing 58 Frequency transferring 58 Memory names 59 Memo pads 60 8 SCAN OPERATION 6163 Scan types 61 Preparation 61 Programmed scan operation 62 Memory scan operation 62 Select memory scan operation 63 Priority watch 63 9 ANTENNA TUNER OPERATION 6466 Antenna tuner operation 64 D Internal antenna tuner 64 D Tuner operation 64 D Optional external tuner operation 65 DOptional AT-180 AUTOMATIC ANTENNA TUNER operation 65 DOptional AH-4 AUTOMATIC ANTENNA TUNER operation 66 TABLE OF CONTENTS 29 [UP]/[DN] speed 80 30 Noise blanker in AM mode 80 31 Available memo pads 80 32 Power ON check function 81 33 Auto tune start function 81 34 PTT tune function 81 35 Tuner switch condition 81 36 Packet data speed 81 37 Voice synthesizer language 82 38 Voice synthesizer speed 82 39 S-meter level speech 82 40 CI-V address setting 82 41 CI-V data transffer rate 82 42 CI-V transceive 82 43 CI-V operating frequency data length 82 13 MAINTENANCE 83 Fuse replacement 83 Memory backup 83 Cleaning 83 14 TROUBLESHOOTING 8485 15 OPTIONAL UNIT INSTALLATIONS AND SETTINGS 8689 Opening the transceiver case 86 UT-102 VOICE SYNTHESIZER UNIT 86 D Operation 86 IF lter 87 UT-106 DSP RECEIVER UNIT 88 MB-72 CARRYING HANDLE 88 AT-180 internal switch description 89 16 SPECIFICATIONS 90 General 90 Transmitter 90 Receiver 90 Antenna tuner 90 17 OPTIONS 9192 18 MENU GUIDE 9394 19 ABOUT CE 9596 10 DATA COMMUNICATION 6770 Connections for packet 67 D When connecting to [DATA] socket 67 D When connecting to [ACC] socket 67 D When connecting to [MIC] connector 67 Packet (AFSK) operation 68 D Frequency indication during AFSK operation 68 D SSB-D mode selection 69 D Carrier point setting 69 DAdjusting the transmit signal from the TNC 70 11 CONTROL COMMAND 7173 Remote jack (CI-V) information 71 D CI-V connection example 71 D Data format 71 D Command table 72 D Band stacking register 73 D Codes for memory keyer contents 73 D Codes for memory name contents 73 12 SET MODE 7482 General 74 D Quick set mode operation 74 D Initial set mode operation 74 Quick set mode items 75 Initial set mode items 76 1 Maximum output power setting 76 2 Power save setting 76 3 Simple mode setting 76 4 Mode availability 76 5 Output power setting for mode 76 6 Conrmation beeps 77 7 Band edges beeps 77 8 Beep level adjustment 77 9 Beep audio level limit 77 10 CW carrier point setting 77 11 CW side tone level 77 12 CW side tone level limit 77 13 SSB/CW frequency shift setting 78 14 Display backlighting 78 15 Key/switch backlighting 78 16 Light timer setting 78 17 LED brightness 78 18 Automatic power OFF 78 19 Current intercept point 79 20 RF gain/squelch control 79 21 Sub dial setting 79 22 Optional lter selection 79 23 Peak meter hold setting 79 24 Quick split function 79 25 Split lock function 80 26 Split offset frequency 80 27 Scan resume condition 80 28 Scanning speed 80 e c n e r e f e R k c i u Q 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 iv QUICK REFERENCE GUIDE Installation 1. Install a ground system for DC noise suppression and RFI suppression 2. Install your DC power supply 3. Install lightning protection. This will help protect more than your gear. 1. Grounding your Shack Although your radio will operate by connecting the DC power supply and antenna, it is necessary to have a good ground system in your shack. A ground connec-

tion is the electrical contact between the common point of an electrical or electronic system and the earth. A good earth ground is necessary to prevent electrical shock, eliminate problems from RFI and DC noise. With more electronic devices being used today, it is also important to reduce RFI and EMI. Although you may not see interference in your shack, without a grounding system, your neighbours may experience interference. Even though many of these devices are Part 15, where they must accept interference from their surrounding environment, it is best to eliminate as much of the possible interference from your shack. If you do not have a grounding system for your shack, depending on the location of your shack, basement or ground oor, a good ground system can be as simple as a couple of ground rods driven 6 to 8 feet into the soil. When installing your IC-703 to your grounding system, the shortest most direct connection is recom-

mended. NOTE: There are many publications covering proper grounding techniques. Check with your local dealer for more information and recommendations. 2. Installing your DC Power Supply The DC power supply is a device used to convert 110/220 V AC, also know as Household current, to a steady source of 13.8 V DC. The perfect match to your IC-703 is the PS-125. This plug and play unit plugs into the DC power recepta-

cle using an optional OPC-1248 located on the rear of the radio. Or connect the supplied DC power cable (OPC-1229) to the appropriate color coded terminals, then insert the DC connector into the DC power receptacle lo-

cated on the rear of the radio. NOTE: Although the power supply current require-

ment is quite low during receiving, this not the case when you transmit. With many electrical devices in the shack, it is very important to verify the electrical circuit is not overloaded. I 4. Install and connect an antenna system for the ap-

propriate bands of operation 5. Connect other peripheral equipment. This includes microphones, headsets, TNC, amplifiers and any other equipment necessary to make your shack complete. R WARNING!: NEVER ground station equip-

ment or antennas to house gas lines. NEVER at-

tach ground lines to plastic (pvc) pipe. D Some Symptoms if inadequate grounding a. Poor DC Ground 50/60 Hz hum on the audio either Rx or Tx without the antenna connected. If you feel a tingling sensation when you touch a metal surface. Surfaces such as the cover of your radio or power supply. b. Poor RF Ground While transmitting and you feel a tingling sensation when you touch a metal surface. Surfaces such as the cover of your radio or power supply. While transmitting, you experience interference to other electronic devices, such as the telephone, television or stereo audio systems. Transceiver Ground PS-125 to DC power receptacle AC outlet A DC power supply*

Red

+

Black _

*13.8 V;

at least 3.0 A continuous Supplied OPC-1229 DC power cable Optional OPC-1248 AC cable Connect to an AC outlet using the supplied AC cable. 4 A fuses 3. Installing lightning protection Although you may not live in an area with high occur-

rence for lightning storms, it is always wise to take precautions for lightning or static discharges. Proper lightning protection not only offers protection to the ham gear, but the shack and most importantly the op-

erator. 4. Installing your antenna system Whether your IC-703 is your first radio or one of many, one of your key elements in a great shack is the antenna system. There is a connection on the back of your IC-703, for HF and 6 m. If you are using one antenna for HF and 6 m, for simplicity, connect the antenna coax to ANT. ANTENNA Connect a HF/50MHz antenna Impedance: 50 Your IC-703 is equipped with an internal antenna tuner (ATU) for operation on 1606 m. This ATU is de-

signed to work with an unbalanced 50 feedline. The purpose of the internal antenna tuner is to match the impedance of your antenna system to as close to a 50 load as possible. This ATU will not operate with a long wire or ladder line (450 or other balanced feedlines). An external ATU such as the AH-4 would be necessary for this kind of operation. Antenna SWR Each antenna is tuned for a specified frequency range and SWR may be increased out-of-range. When the SWR is higher than approx. 2.0:1, the transceivers power drops to protect the nal tran-

sistors. In this case, an antenna tuner is useful to match the transceiver and antenna. Low SWR al-

lows full power for transmitting even when using the antenna tuner. The IC-703 has an SWR meter to monitor the antenna SWR continuously. QUICK REFERENCE GUIDE NOTE: There are many publications covering proper lightning protection, check with your local dealer for more information and recommendations. PL-259 CONNECTOR INSTALLATION EXAMPLE q 30 mm Slide the coupling ring down. Strip the cable jacket and soft solder. Coupling ring 10 mm (soft solder) w e r 10 mm Soft solder 12 mm solder solder the cable as Strip shown at left. Soft solder the center con-

ductor. Slide the connector body on and solder it. Screw the coupling ring the connector body. onto 30 mm 98 in 10 mm 38 in 12 mm 116 in R WARNING: Although a mag mount antenna works great on a vehicle, DO NOT use the IC-703 with this type of antenna. CAUTION: Although your IC-703 has protection to drop down power with a high SWR, this does not completely protect the transceiver from transmis-

sion without an antenna. Make sure you have an antenna connected whenever you transmit with your radio. NOTE: There are many publications covering proper antennas and their installation, check with your local dealer for more information and recom-

mendations. e c n e r e f e R k c i u Q II QUICK REFERENCE GUIDE 5. Connect other peripheral equipment Everyone has his or her favorite ad-on gear; now is the time to connect this gear! We will cover the basic devices that can be connected to your IC-703. Operation 1. Voice Microphones: Connect the microphone to the modu-

lar-type connector bottom of the front panel or back of the radio. If you do not see the particular item you are wanting to connect, refer to the Advance Connections section starting on page 14. Rear panel MICROPHONES Front panel HM-103 SM-20 OPC-589 2. CW CW Key: There are several types of keys or keyers that can be used with your IC-703. a. Iambic Key paddle: Use a 6.35(d) mm (14) stereo plug and connect to the [KEY] jack located on the rear of the radio. b. Straight Key: Use a 6.35(d) mm (14) mono plug and connect key to the back of the radio. c. External Keyer: Use a 6.35(d) mm (14) mono plug and connect to the back of the radio. d. Computer Keying: Use a 6.35(d) mm (14) mono plug and connect to the back of the radio. Rear panel Rear panel CW KEY When connecting a paddle

(dot)

(com)

(dash) III CW KEY A straight key can be used when the internal electronic keyer is turned OFF in keyer set mode. (p. 32) When connecting a straight key or else

(+)

(_) NOTE: You will need to select the type of keyer you are using in the keyer set mode. There are many advanced CW functions in this set mode. Until you have a full understanding of these functions change only the items necessary. QUICK REFERENCE GUIDE 3. Other convenient items Headphones:

A 3.5(d) mm (14) mono jack for operation without using the internal or external speakers. Perfect for op-

eration without disturbing others in the room. External Speaker:

A 3.5(d) mm (18) mono jack for operation with an ex-

ternal speaker. (Input impedance: 8 /Max. input power: 5 W) Rear panel SPEAKER e c n e r e f e R k c i u Q HEADPHONES Front panel PHONES SPEAKER Select PHONES with the

[PHONES/SPEAKER]

switch on the back of the front panel. Your rst contact Now you should have your IC-703 installed in your shack, and like a kid on his birthday, you are probably excited to get on the air. We would like to take you through a few basic operation steps to make your rst On The Air an enjoyable experience. D Getting started 1. Before powering up your radio, you may want to make sure the following controls are set in the fol-

lowing positions:

[AF]

[RF/SQL]

[SHIFT]

: Commonly referred to as the vol-

ume: fully counter clockwise.

: The control for the RF Gain and Squelch circuits: 12 oclock.

: Shifts the IF center frequency:

12 oclock or SPEAKER Front panel PHONES SPEAKER Select SPEAKER with the [PHONES/SPEAKER]

switch on the back of the front panel. 2. Resetting the CPU: Although you have purchased a brand new radio, some settings may be changed from the factory defaults during the QC process. So your radio can start from Factory Defaults resetting the CPU is necessary. (Refer to p.17)

[POWER]

[Y]

[Z]

IV QUICK REFERENCE GUIDE D Just listening 1. Select the desired band On your IC-703, an easy way of changing bands is by using the [(Y)BAND] or [(Z)BAND] located just right corner on the front panel.

[Y]

[Z]

2. Tune to the desired frequency Directly left of the [(Y)BAND]/[(Z)BAND] is the main dial. This will allow you to dial in the frequency you want to operate. You will notice the tuning speed [TS]

is 10 Hz resolution. Page 20 will instruct you on how to set the tuning speed [TS] for 1 Hz resolution. 3. Adjust audio output Adjust this control to a comfortable audio level. Push [(Y)BAND] or [(Z)BAND] to select the desired band. Pushing [(Y)BAND] or [(Z)BAND] continuously scrolls through the available bands. Say you want to go to 20 meters or 14 MHz; you would push [(Y)BAND] or [(Z)BAND] several times to select it. This will change the displayed operating frequency to the 20-meter band. NOTE: The band stacking register can also be used to select bands. (Refer to p. 22) AF RF/SQL Decreases Increases No audio output Max. audio output V D What are you hearing?

Stop and focus on what you are hearing. Do you hear a lot of noise? Is the signal intelligible? Are you set up for the right mode? How about the lters?

1. Verify mode Although your IC-703 will automatically select USB or LSB in the HF bands, it will not select any of the other modes. You will need to select the proper mode whether CW, RTTY, AM or FM. QUICK REFERENCE GUIDE e c n e r e f e R k c i u Q MODE Hint!

The Band Stacking Register will memorize the last frequency used in the band, as well as the Mode, Filter, Tuner and AGC settings. This makes band hoping much easier. 2. Reducing interference (some functions may require an optional unit depending on version) Your IC-703 has many features to reduce QRM and QRN from the desired signal. a. Noise Reduction: The noise reduction system on your IC-703 is part of the DSP. This is used to re-

duce the hiss and QRM levels. b. Adjusting the Noise Reduction: The noise re-

duction is completely variable on how much of the DSP Noise Reduction is used. q Select S4 (DSP menu). Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. w Push [(F-2)NR] to activate the noise reduction func-

tion. DSP and NR appear when the function is ON. q Push [(F-3)NRL] to indicate the noise reduction level. w Rotate the [M-CH] control to set the noise reduc-

tion level. e Push [(F-3)NRL] to exit the noise reduction level set mode.

[MENU]

[(F-2)]

[DISPLAY]

[M-CH]

[(F-3)]

USB Appear DSP NR USB DSP NR S1 3 5 7 9 20 40 60dB VFO A BLANK S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH S4 ANF NR NRL 10 5 PO CH S4 LEVEL 4 NRL 10 5 Noise reduction ON Noise reduction OFF Hint!

How far you advance the NR control will determine how much the noise can be effectively reduced. Ad-

justing the noise reduction level too high may cause some distortion to occur on the received signal. The noise reduction level should only be set as high as is necessary. Use this setting, along with RF gain, NB (noise blanker, if needed), and IF lters as well, to minimize the effects of noise on the target signal. VI QUICK REFERENCE GUIDE c. Automatic Notch: The automatic notch will track up to heterodynes. This is helpful for eliminating annoying transmitter tune up tones on any band, and to minimize continuous tone heterodynes en-

countered on the 40 meter phone bands at night, for example. Once selected an icon will appear ANF on the display. q Select S4. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. w Push [(F-1)ANF] to activate the automatic notch l-

ter. NOTE: Your IC-703 is equipped with an AGC cir-

cuit. This allows the DSP to lter out interfering sig-

nals and QRM, while also taking this interference out of the AGC. Bottom line, this will either elimi-

nate or greatly reduce the pumping of the AGC from the interfering signal.

[(F-1)]

[MENU]

[DISPLAY]

Appear DSP ANFANF USB S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH S4 ANF NR NRL 10 5 Hint!

The Automatic Notch will not operate in the CW, RTTY or SSB-D modes. d. Noise Blanker: The noise blanker function re-

duces pulse-type noise such as that generated by automobile ignition systems. This function is not ef-

fective for FM modes or for non pulse-type noise. q Select M3. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. w Push [(F-2)NB] to activate the noise blanker. NB appears when the function is ON. e. Adjusting the Noise Blanker: The noise blanker is completely variable on how much of the Noise Blanker is used. q Push [(F-2)NB] for 1 sec. to enter the noise blanker level set mode. w Rotate the main dial to set the noise blanker level. e Push [DISPLAY] to exit the noise blanker level set mode.

[MENU]

[(F-2)]

[DISPLAY]

USB Appears NB S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH M3 FIL NB MET 10 5

[DISPLAY]

[(F-2)]

Main dial USB N1 NB LEVEL Hint!

When using the noise blanker, received signals may be distorted if the noise blanker level setting has been too high. VII QUICK REFERENCE GUIDE

[(F-1)]

[MENU]

N W USB

[DISPLAY]

S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH M3 FIL NB MET 10 5 Either these appears when selected f. Filter:

One optional lter can be installed in the IC-703. Narrow lters help reject interference from adjacent signals and obtain good selectivity. Wide lters provide improved audio for SSB opera-

tion when no interfering signals are present. Narrow lters for AM/FM modes are standard. FILTER PRESETTING:

After you install a lter (see p. 87 for installation), you must specify the installed lter in initial set mode (item 22 OPT. FIL ; see p. 79). FILTER ON/OFF:

q Select M3. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. w Push [(F-1)FIL] momentarily to select the narrow lter; push for 1 sec. to select the wide lter. appears when the narrow filter is selected; ap-

pears when the wide lter is selected. NOTE: When selecting the narrow lter (or wide l-

ter), the graphic passband is changed (see dia-

gram below). wide is selected Normal operation narrow is selected We hope these pointers have been helpful. Now you are ready for the Ready to call CQ?. e c n e r e f e R k c i u Q VIII QUICK REFERENCE GUIDE Ready to call CQ?

[POWER]: OFF

[P.AMP/ATT]: OFF

(indicator lights out)

[TUNER]: OFF

(indicator lights out)

[RIT/SUB]: OFF

(indicator lights out)

[SHIFT]: Center AF RF SQL RIT SUB M-CH SHIFT POWER P.AMP ATT TUNER PHONES MODE TS RX TX DISPLAY LOCK Y BAND BAND Z MENU F 1 F 2 F 3

[AF]: Max. CCW CCW : counterclockwise

[RF/SQL]: Center

[LOCK]: OFF

(indicator light out) 1. Setting up your Mic Gain Microphone gain must be adjusted properly so that your signal does not distort when transmitted. q Select SSB or another phone mode (AM or FM mode). w Push [DISPLAY] for 1 sec. to select quick set mode. e Push [MENU] one or more times to select Q2 MIC GAIN. The ALC meter is selected automatically when operat-

ing in SSB mode. r While speaking into the microphone, rotate the main dial to adjust the microphone gain so that the ALC meter does not peak past the ALC zone. While transmitting at your normal voice level, the ALC meter should read at about the middle of the ALC zone. Be sure the mic gain is in the range of 2 to 5. t Push [DISPLAY] to exit quick set mode.

[DISPLAY]

Main dial

[MENU]

USB S1 3 5 7 9 20 40 60dB ALC Q2 MIC GAIN ALC ALC zone IX 2. Speech compressor The IC-703 has a built-in, low distortion speech com-

pressor circuit. This circuit increases your average talk power in SSB mode and is especially useful for DXing when the receiving station is having difculty copying your signal. q Select USB or LSB mode. w Select the ALC meter. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3, then push

[(F-3)MET] one or more times to select ALC. e Select M4. Push [MENU] one more time to select M4. r Push [(F-2)COM] to turn the speech compressor function ON. COM appears. t Push [(F-2)COM] for 1 sec. to enter the compres-

sion level set mode (p. 54). y Rotate the main dial to set the speech compression level. NOTE: When the ALC meter peaks at light the ALC zone, your transmitted voice may be distorted. Verify you have selected a clear frequency and call out your CQ!

QUICK REFERENCE GUIDE

[(F-3)]

[MENU] [(F-2)]

[DISPLAY]

Main dial USB S1 3 5 7 9 20 40 60dB ALC C1 COMP LEVEL ALC ALC zone Hint!

Voice patterns and audio characteristics vary with each operator, therefore the Microphone gain, speech compression settings will be different for each operator. Actual on air experimenting is nec-

essary to get just the right sound. Its best to test and adjust your audio on the air, while someone who knows what your real voice sounds like listens, and provides and opinion on your audio quality. e c n e r e f e R k c i u Q X 1 PANEL DESCRIPTION Front panel q

@2

@1

@0

!9 POWER P.AMP ATT TUNER PHONES w e r t y u i o AF RF SQL USB RIT SUB M-CH SHIFT S1 3 5 7 9 20 40 60dB VFO A PO CH M1 SPL A/B XFC 10 5 MODE TS RX TX DISPLAY LOCK MENU F 1 F 2 F 3

!7!8

!6

!5

!4

!2!3 Y BAND BAND Z

!0 q POWER SWITCH [POWER] (p. 17) While transceivers power is OFF:

Push to turn power ON. Turn the DC power supply ON in advance. While transceivers power is ON:

Push momentarily to indicate the connected power supply voltage. Push for 1 sec. to turn power OFF. w AF GAIN CONTROL [AF] (inner control; p. 17) Varies the audio output level from the speaker. AF RF/SQL Decreases Increases No audio output Max. audio output e RF GAIN CONTROL/SQUELCH CONTROL

[RF/SQL] (outer control; p. 24) Adjusts the RF gain and squelch threshold level. The squelch removes noise output from the speaker

(closed condition) when no signal is received. The squelch is particularly effective for FM. It is also available for other modes. 12 to 13 oclock position is recommended for any setting of the [RF/SQL] control. The control can be set as Auto (RF gain control in SSB, CW and RTTY; squelch control in AM and FM) or squelch control (RF gain is xed at maximum) in initial set mode as follows. (p. 79) MODE SSB, CW RTTY AM, FM SET MODE SETTING AUTO RF GAIN SQL SQL SQL SQL RF GAIN + SQL RF GAIN + SQL RF GAIN + SQL 1

!1 When setting as RF gain/squelch control Noise squelch (FM mode) Squelch is open. RF gain adjustable range Recommended level Maximum RF gain S-meter squelch When functioning as RF gain control

(Squelch is xed open; SSB, CW, RTTY only) Maximum RF gain Adjustable range Minimum RF gain When functioning as squelch control

(RF gain is xed at maximum.) Noise squelch threshold

(FM mode) Squelch is open. Noise squelch (FM mode) S-meter squelch threshold S-meter squelch Shallow Deep r FUNCTION DISPLAY Shows the operating frequency, dot matrix indica-

tions, selected memory channel, etc. See p. 9 for details. t TUNING STEP SWITCH [TS] (pgs. 1921) While in SSB/CW/RTTY modes, push momentar-

ily to turn the programmable tuning step ON and OFF. While in FM/AM mode push momentarily to toggle the programmable tuning step and 1 MHz quick tuning step. While the programmable tuning step indicator is dis-

played, the frequency can be changed in programmed kHz steps. Programmable tuning step indicator USB 0.01 (FM/AM mode only), 0.1, 1, 5, 9, 10, 12.5, 20, 25 and 100 kHz tuning steps are available. 1 MHz quick tuning step are only available in FM and AM modes. While the programmable tuning step is OFF, turns the 1 Hz step ON and OFF when pushed for 1 sec. 1 and 10 Hz steps are only available in SSB, CW and RTTY modes. 1 Hz indication appears, and the frequency can be changed in 1 Hz steps. While the programmable tuning step is ON, en-

ters the tuning step selection mode when pushed for 1 sec. y MODE SWITCH [MODE] (p. 23) Push momentarily to cycle through the operating modes:

USB/LSB CW RTTY/SSB-D FM/AM Push for 1 sec. to toggle the following operating modes:

USB LSB CW Memory keyer mode RTTY SSB-D (SSB data mode) FM AM u RECEIVE/TRANSMIT INDICATORS [RX]/[TX]

[RX]: Lights green while receiving a signal and when squelch is open.

[TX]: Lights red while transmitting. i MAIN DIAL Changes the displayed frequency, sets the values of selected initial set mode items, etc. PANEL DESCRIPTION 1 o UP/DOWN (BAND) SWITCHES [Y/Z(BAND)]

Push momentarily to select a band. Can also be used to advance or back the quick set mode items, initial set mode items, etc. Push and hold to scroll through the bands contin-

uously.

!0 MAIN DIAL TENSION LATCH Selects the main dial tension. 2 positions are available.

!1 MICROPHONE CONNECTOR (p. 10) Modular-type microphone connectorAccepts the supplied microphone (HM-103). The optional OPC-589 can be used to connect an 8-pin microphone such as the SM-8 or SM-20, if desired. A microphone connector is also available on the rear panel. DO NOT connect 2 microphones simultaneously. 1

!2 LOCK SWITCH [LOCK]

Push momentarily to toggle the dial lock function ON and OFF. The dial lock function electronically locks the main dial. When the optional UT-102 VOICE SYNTHESIZER UNIT is installed (p. 86), push for 1 sec. to have the frequency, etc. announced. UT-102 operation can be adjusted in the initial set mode (p. 82). LOCK Lights while the lock function is activated.

!3 DISPLAY SWITCH [DISPLAY] (p. 94) Push momentarily to select one of the three menu sets: M1 to M4, S1 to S4 and G1 to G4. Push for 1 sec. to enter the quick set mode.

!4 MULTI-FUNCTION SWITCHES [F1] / [F2] / [F3]

Push to select the function indicated in the dot ma-

trix display above these switches. (pgs. 46, 94) Functions vary depending on the menu set selected. Push to edit a character for memory keyer pro-

gramming or memory name. (pgs. 35, 59)

!5 MENU SWITCH [MENU] (p. 94) Push this switch one or more times to select menus within a menu set (M, S or G), or push to advance through the quick set mode and initial set mode displays. Push for 1 sec. to jump between two different function menu sets. 2 1 PANEL DESCRIPTION

!6 RIT/SUB DIAL SWITCH [RIT/SUB] (pgs. 21, 47) Push to toggle the RIT or SUB DIAL function ON and OFFinitial set mode is used to select the desired action*. Lights green when the SUB DIAL function is ON; lights red when the RIT function is ON. Use the [M-CH] control to vary the RIT frequency or SUB DIAL frequency (see below). When the RIT function is ON, push for 1 sec. to add or subtract the shifted frequency to the oper-

ating frequency. RIT/

SUB Lights red while the RIT function is activated;

green while the SUB DIAL function is activated.

*Even if RIT is selected in initial set mode, RIT cannot be se-

lected when operating AM or FM modes. What is the RIT function?

The RIT (Receiver Incremental Tuning) shifts the receive fre-

quency without shifting the transmit frequency. This is useful for ne tuning stations calling you on an off-fre-

quency or when you prefer to listen to slightly different-

sounding voice characteristics, etc.

!7 SHIFT CONTROL [SHIFT] (outer control; p. 47) Shifts the center frequency of the receivers IF pass-

band. Rotate the control clockwise to shift the center frequency higher, or rotate the control counterclockwise to shift the center frequency lower. When rotate the control, the IF passband is graphically displayed and changes in accordance with the [SHIFT]

control. M-CH SHIFT M-CH SHIFT M-CH SHIFT

!9 HEADPHONE JACK [PHONES] (p. 14) Accepts headphones with 816 impedance. When headphones are connected, no receive audio comes from the speaker. When the PHONES/SPEAKER switch on the back of the front panel is set to the [SPEAKER] position, an external speaker can be connected. This is convenient for mobile or outdoor operation. Back of the front panel PHONES SPEAKER PHONES SPEAKER

@0 TUNER SWITCH [TUNER] (pgs. 6466) Push momentarily to toggle the automatic an-

tenna tuner function ON and OFF (bypass). Lights red when the automatic antenna function is ON. Push this switch for 1 sec. to manually tune the antenna. When the tuner cannot tune the antenna, the tuning circuit is bypassed automatically after 20 sec. TUNER Lights while the automatic tuning function is activated.

@1 FRONT PANEL LATCH (p. 12) Pull away from the transceiver (towards yourself when looking at the front of the transceiver) to de-

tach the front panel from the main body of the trans-

ceiver.

@2 PRE AMP/ATTENUATOR SWITCH [P.AMP/ATT]

(p. 46) Push momentarily to turn the preamp ON or OFF. Push for 1 sec. to turn the 20 dB attenuator ON;

push momentarily to turn the attenuator OFF. Lights green when the preamp is ON; lights red when the 20 dB attenuator is ON. Shifts low Center Shifts high P.AMP/ATT

!8 M-CH CONTROL [M-CH] (inner control) When the RIT or SUB DIAL functions are OFF, ro-

tate to select a memory channel number (p. 56). Shifts the receive frequency while the RIT func-

tion is ON in SSB, CW and RTTY modes (see above or p. 47). RIT variable range is 9.99 kHz Changes the operating frequency in the selected tuning steps while the SUB DIAL function is ON

(p. 21). M-CH SHIFT Decreases Increases Lights green while the preamp is activated;

lights red while the attenuator is activated. What is the preamp?

The preamp amplies received signals in the front end cir-

cuit to improve the S/N ratio and sensitivity. Turn ON P.AMP when receiving weak signals. What is the attenuator?

The attenuator prevents a desired signal from distorting when very strong signals are near the desired frequency, or when very strong electric elds, such as from a broadcast-

ing station, are near your location. 3 PANEL DESCRIPTION 1 Multi-function switches D M1 functions D M2 functions M1 MENU SPL F-1 A/B F-2 XFC F-3 M2 MENU MW F-1 MCL F-2 V/M F-3 SPLIT OPERATION (p. 30) SPL F-1 Push momentarily to toggle the split func-

tion ON and OFF. (p. 51) appears when the split function is ON. Push for 1 sec. to turn the quick split func-

tion ON. (p. 52) The offset frequency must be programmed in advance using initial set mode. (p. 80) The offset frequency is shifted from the dis-

played frequency. The quick split function can be turned OFF using initial set mode. (p. 79) VFO A/B SELECTION A/B F-2 Push momentarily to toggle VFO A and VFO B in VFO mode. (p. 18) Push momentarily to toggle the transmis-

sion VFO and reception VFO during split operation. (p. 51) Push momentarily to toggle the transmit and receive frequencies (and modes) of memory channels when the split function is turned ON. Push for 1 sec. to equalize the frequency and operatingmode of the two VFOs. The rear (undisplayed) frequency and oper-

ating mode are equalized to the front (dis-

played) VFO frequency and operating mode. TRANSMIT FREQUENCY CHECK (p. 51) XFC Monitors the transmit frequency when pushed and held. While pushing this switch, the transmit fre-

quency can be changed with the main dial. F-3 F-2 F-3 VFO/MEMORY V/M MEMORY WRITE (p. 57) MW F-1 Push for 1 sec. to store the selected read-

out frequency and operating mode into the displayed memory channel. MEMORY CLEAR (p. 58) MCL Push for 1 sec. to clear the selected read-

out memory channel contents.

} appears. This switch does not function in VFO mode. Push momentarily to toggle between VFO and memory modes. (p. 56) Push for 1 sec. to transfer the frequency and operating mode in the selected mem-

ory channel to a VFO. (p. 58) D M3 functions M3 MENU FIL F-1 NB F-2 MET F-3 FILTER SELECTION (p. 49) FIL F-1 Push to toggle the narrow filter (or wide lterpush for 1 sec.) ON and OFF. appears when the narrow filter is ON;

appears when the wide lter is ON. An optional lter installation and presetting in initial set mode (p. 79) is necessary to use the following:

CW/RTTY narrow: FL-52A or FL-53A SSB narrow: FL-222 SSB wide: FL-257 NOISE BLANKER (p. 48) NB F-2 Push momentarily to toggle the noise blanker ON and OFF. NB appears when the noise blanker func-

tion is ON. The noise blanker does not function in FM mode; 30 AM NB item (p. 80) in initial set mode must be set to ON for the noise blanker to work in AM mode. Push for 1 sec. to enter the noise blanker level set mode. The noise blanker level can be set in noise blanker level set mode (p. 46). 1 4 1 PANEL DESCRIPTION METER SELECTION (p. 52) MET F-3 Selects the type of meter displayed (dur-

ing transmit) in the function display. Power, ALC or SWR metering can be se-

lected. Only an S-meter is available for receive. D M4 functions DURING SSB/AM OPERATION:

M4 MENU VOX F-1 COM F-2 AGC F-3 DURING CW OPERATION:

M4 MENU 1/4 F-1 KEY F-2 AGC F-3 DURING RTTY OPERATION:

M4 MENU 1/4 F-1 TON F-2 AGC F-3 DURING SSB-D OPERATION:

M4 MENU 1/4 F-1 F-2 AGC F-3 DURING FM OPERATION:

M4 MENU VOX F-1 TON F-2 F-3 VOX FUNCTION (p. 53) VOX F-1 Push momentarily to toggle the VOX func-

tion ON and OFF. VOX appears when the VOX function is ON. Push for 1 sec. to enter the VOX set mode. The VOX delay, VOX gain and ANTI-VOX can be set in VOX set mode. What is the VOX function?

The VOX function (voice operated transmission) starts trans-

mission without pushing the PTT switch when you speak into the microphone; then, automatically returns to receive when you stop speaking. 5 SPEECH COMPRESSOR (p. 54) COM Push momentarily to toggle the speech compressor ON and OFF. COM appears when the speech compres-

sor is ON. F-2 Push for 1 sec. to enter the compression level set mode. The COMP gain can be set in compression level set mode. AGC (p. 48) AGC F-3 Push to change the time constant of the AGC circuit. FAGC appears when the fast time constant is selected. 1/4 FUNCTION 1/4 F-1 Push to toggle the 1/4 tuning function ON and OFF. When the 14 function is ON, a bar appears under the 14 indication and ne tuning can be used. KEYER SET MODE (p. 32) KEY F-2 Push for 1 sec. to enter the keyer set mode. The break-in setting, break-in delay time, CW pitch, CW paddle type and dot/dash ratio can be set in the keyer set mode. What is the break-in function?

Full break-in (QSK) activates the receiver between transmit-

ted dots and dashes. This is useful when operating in nets, or during DX pileups and during contests, when fast ex-

changes are common. RTTY TONE SET MODE (p. 40) TON Push for 1 sec. to enter the RTTY tone set mode. The RTTY tone frequency, RTTY shift fre-

quency and RTTY keying polarity can be set in RTTY tone set mode. F-2 F-2 FM TONE OPERATION TON Push momentarily to select the subaudi-

ble tone encoder for repeater use, tone squelch function and OFF. (pgs. 4345) T appears when the repeater tone function is ON. (pgs. 43, 45) TSQL appears when the tone squelch func-

tion is ON. (p. 43) Push for 1 sec. to enter the FM tone set mode. (p. 44) The repeater tone frequency, tone squelch frequency can be set in FM tone set mode. PANEL DESCRIPTION 1 D S1 functions S1 MENU MW F-1 MPW F-2 MPR F-3 D S3 functions S3 MENU 7 F-1 14 F-2 21 F-3 MEMORY WRITE (p. 57) MW F-1 Push for 1 sec. to store the selected readout frequency and operating mode into the displayed memory channel. MEMO PAD WRITE (p. 60) MPW Push to store the the selected readout frequency and operating mode into a memo pad. F-2 MEMO PAD READ (p. 60) MPR Push to call up a memo pad. F-3 D S2 functions DURING VFO MODE:

S2 MENU SCN F-1 PRI F-2 V/M F-3 DURING MEMORY MODE:

S2 MENU SCN F-1 SEL F-2 V/M F-3 SCAN (pgs. 6163) SCN Push to start or stop the scan function. F-1 PRIORITY WATCH (p. 63) PRI Push to start or stop the priority watch. F-2 VFO/MEMORY V/M F-3 Push momentarily to toggle between VFO and memory modes. (p. 56) Push for 1 sec. to transfer the frequency and operating mode in the selected mem-

ory channel to a VFO. (p. 58) SELECT SCAN (p. 61) SEL F-2 Push to toggle the select setting ON and OFF for the selected memory channel. QUICK BAND CHANGE FUNCTION (p. 22) This item provides access to the band stacking regis-

ter. By default the 7, 14 and 21 MHz bands are dis-

played. Push [F-1], [F-2] or [F-3] for 1 sec. to select a new band if desired. A mode is memorized along with the frequency for each band. DS4 functions

(UT-106 is required for some version) S4 MENU ANF F-1 NR F-2 NRL F-3 1 AUTOMATIC NOTCH FILTER (p. 50) ANF This function automatically attenuates beat tones, tuning signals, etc., even if they are moving. F-1 NOISE REDUCTION (p. 50) NR F-2 This function reduces noise components and picks out desired signals which are buried in the noise. NOISE REDUCTION LEVEL DISPLAY (p. 50) NRL This switch displays the noise reduction level when pushed. F-3 6 1 PANEL DESCRIPTION Rear panel w q e r t y u i

!0 o q ANTENNA CONNECTOR [ANT] (p. 13) Accepts a 50 antenna with a PL-259 connector. w GROUND TERMINAL [GND] (p. 11) Connect this terminal to a ground to prevent electri-

cal shocks, TVI, BCI and other problems. e DATA SOCKET [DATA] (pgs. 8, 14) 6-pin min DIN socket to connect a TNC (Terminal Node Controller), etc. for packet operation. See page at right for socket information. r ACCESSORY SOCKET [ACC] (pgs. 8, 14) Enables connection to external equipment such as a TNC for data communications, a linear amplier or an automatic antenna selector/tuner, etc. See page at right for socket information. t EXTERNAL SPEAKER JACK [EXT SP] (p. 14) Accepts a 48 speaker. y CI-V REMOTE CONTROL JACK [REMOTE] (p. 71) Designed for use with a personal computer for re-

mote control of the transceiver functions. Used for transceiver operation with another Icom CI-V transceiver or receiver. u MICROPHONE CONNECTOR [MIC] (p. 13) Accepts the supplied microphone (connected in par-

allel with the front panels [MIC] connector). See p. 2 for microphone notes. See p. 10 for microphone connector information. i ELECTRONIC KEYER JACK [KEY] (p. 28) Accepts a paddle to activate the internal electronic keyer. Selection between the internal electronic keyer and straight key operation can be made in keyer set mode.

(p. 32) When connecting a straight key When connecting a paddle

()

(dot)

(com)

(dash) If you use an external electronic keyer, make sure the voltage retained by the keyer is less than 0.4 V when the key is ON. o TUNER CONTROL SOCKET [TUNER] (p. 14) Accepts the control cable from an optional AH-4 HF/50 MHz AUTOMATIC ANTENNA TUNER.

!0 DC POWER SOCKET [DC13.8V] (p. 15) Accepts 9.015.87 V DC through the supplied DC power cable. NOTE: DO NOT use a cigarette lighter socket as a power source when operating in a vehicle. The plug may cause voltage drops and ignition noise may be superimposed onto transmit or receive audio. 7 PANEL DESCRIPTION 1 D DATA socket DATA PIN No. NAME DESCRIPTION 1 2 3 4 5 6 6 4 5 3 2 1 Rear panel view D ACC socket DATA IN Input terminal for data transmit. (1200 bps: AFSK/9600 bps: G3RUH, GMSK) GND Common ground for DATA IN, DATA OUT and AF OUT. PTT P PTT terminal for packet operation. Connect ground to transmit data. DATA OUT Data out terminal for 9600 bps operation only. AF OUT Data out terminal for 1200 bps operation only. SQ Squelch out terminal. Becomes ground level when the transceiver receives a signal which opens the squelch. To avoid unnecessary TNC transmission, connect squelch to the TNC to inhibit trans-

mission when receiving signals. Keep audio output at a normal level, otherwise a SQ signal will not be output. 1 ACC PIN No. NAME DESCRIPTION SPECIFICATIONS 1234 8 7 6 5 9 12 10 11 13 Rear panel view q brown i gray w red o white e orange !0 black r yellow !1 pink t green !2 light blue y blue u purple !3 light green 1 2 3 4 5 6 7 8 9 8 V Regulated 8 V output. Output voltage Output current

: 8 V 0.3 V

: Less than 10 mA GND Connects to ground. Input/output pin. (HF/50 MHz only) Ground level HSEND Goes to ground when transmitting. Output current When grounded, transmits. Input current (Tx)

: 0.5 V to 0.8 V

: Less than 20 mA

: Less than 200 mA BDT Data line for the optional AT-180. BAND Band voltage output.

(Varies with amateur band) Output voltage

: 0 to 8.0 V ALC ALC voltage input. Control voltage Input impedance

: 4 V to 0 V

: More than 10 k NC 13.8 V 13.8 V output when power is ON. Output current

: Max. 1 A TKEY Key line for the optional AT-180. 10 FSKK Controls RTTY keying MOD Modulator input. Connects to a modulator. 11 12 13 AF AF detector output. Fixed, regardless of [AF] position in Output level default settings. SQLS Squelch output. Goes to ground when squelch opens. SQL closed SQL open

: 100300 mV rms

: Less than 0.3 V/5 mA

: More than 6.0 V/100 A High level Low level Output current Input impedance Input level

: More than 2.4 V

: Less than 0.6 V

: Less than 2 mA

: 10 k

: Approx. 100 mV rms Output impedance : 4.7 k Color refers to the cable strands of the supplied cable. When connecting the ACC conversion cable (OPC-599) 1234 8 7 6 5 9 12 11 10 13 Connect to ACC socket ACC 1 7 3 5 8 2 6 1 4 q FSKK t AF w GND y SQLS e HSEND u 13.8 V r MOD i ALC ACC 2 7 3 5 2 6 1 4 t ALC q 8 V w GND y VSEND e HSEND u 13.8 V r BAND 8 1 PANEL DESCRIPTION Function display rb

!3

!2

!1 q w e LSB USB CW R RTTY AM FM TSQL SPL N W DSP ANF NR NB VOX F-BK COM F S1 20 5 3 7 9 AGC 60dB ALC SWR PO S CH M1 SPL A/B XFC 1 1.5 2 3 5 10 VFO A VFO B MEMO 40 BLANK r a t y i u o

!0 DOT MATRIX INDICATORS These alphanumeric readouts show a variety of in-

formation such as current functions of the F keys

[F1] to [F3], memory channel names, set mode items, etc. See p. 94 for an overview of these indi-

cators.

!1 METER READOUTS Shows receiving signal strength while receiving. Shows one of transmit power meter, ALC or SWR meter while transmitting.

!2 FUNCTION INDICATORS NB appears when the noise blanker is activated. VOX appears when the VOX function is se-

lected. F-BK appears when full break-in operation is se-

lected and only BK appears when semi break-

in operation is selected. COM appears when the speech compressor is activated. FAGC appears when the fast AGC function is se-

lected.

!3 DSP INDICATORS Appear when the (optional*) DSP unit UT-106 is (in-

stalled and) activated.

* UT-106 DSP unit is optional for some version.

!0 q NARROW/WIDE FILTER INDICATORS appears when selecting AM narrow or FM narrow modes. When installing an optional narrow lter, narrow mode can be selected in CW, RTTY and SSB modes. When the SSB wide filter is installed, appears during wide mode selection. w MODE INDICATORS Show the selected operating mode. appears when CW reverse or RTTY reverse mode is selected. e SPLIT INDICATOR Appears during split operation. r PROGRAMMABLE/1 MHz TUNING STEP INDICATORS ra appears when the programmable tuning step is selected. rb appears when the 1 MHz quick tuning step is selected. t FREQUENCY READOUT Shows the operating frequency. y BLANK MEMORY INDICATOR Appears when the displayed memory channel is not programmed (blank channel). This indicator appears both in VFO and memory modes. u VFO/MEMORY INDICATORS VFO A or B appears when VFO mode is selected;

MEMO appears when memory mode is selected. i SELECT MEMORY CHANNEL INDICATOR Appears when the selected memory channel is set as a select memory channel. o MEMORY CHANNEL READOUT Shows the selected memory channel. 9 PANEL DESCRIPTION 1 Microphone (HM-103) q LOCK DN UP OFF ON w e q UP/DOWN SWITCHES [UP]/[DN]

Change the operating frequency. Push and hold to change the frequency continuously. Tuning step is 50 Hz when no TS indicator appears. w LOCK SWITCH [LOCK]

Locks the [UP]/[DN] switches. e PTT SWITCH [PTT]

Push and hold to transmit; release to receive. TECHNICAL INFORMATION MICROPHONE CONNECTOR Rear panel view PIN NO. FUNCTION 1 2 8

+8 V DC output Frequency up Frequency down Squelch open Squelch closed DESCRIPTION Max. 10 mA Ground Ground through 470 LOW level HIGH level CAUTION: DO NOT short pin 1 to ground as this can damage the internal 8 V regulator. 12345678 q +8 V DC output w Frequency up/down e AF output r PTT t GND (Microphone ground) y Microphone input u GND i Squelch switch HM-103 SCHEMATIC DIAGRAM MICROPHONE 2k 10

+

MIC ELEMENT 4700p 0.33 +

4700p 2.2k MICROPHONE CABLE MICROPHONE PLUG 1 2345678 LOCK DOWN UP PTT RECEIVE TRANSMIT 470 1 10 2 INSTALLATION AND CONNECTIONS Unpacking After unpacking, immediately report any damage to the delivering carrier or dealer. Keep the shipping cartons. For a description and a diagram of accessory equip-

ment included with the IC-703, see Supplied acces-

sories on p. ii of this manual. Selecting a location Select a location for the transceiver that allows ade-

quate air circulation, free from extreme heat, cold, or vibrations, and away from TV sets, TV antenna ele-

ments, radios and other electromagnetic sources. The base of the transceiver has an adjustable stand for desktop use. Set the stand to one of two angles de-

pending on your operating conditions. (see description at right page) Grounding To prevent electrical shock, television interference

(TVI), broadcast interference (BCI) and other prob-

lems, ground the transceiver through the GROUND terminal on the rear panel. For best results, connect a heavy gauge wire or strap to a long earth-sunk copper rod. Make the distance be-

tween the [GND] terminal and ground as short as pos-

sible. R WARNING: NEVER connect the [GND] ter-

minal to a gas or electric pipe, since the connection could cause an explosion or electric shock. Antenna connection For radio communications, the antenna is of critical im-

portance, along with output power and sensitivity. Se-

lect antenna(s), such as a well-matched 50 antenna, and feedline. 1.5:1 or better of Voltage Standing Wave Ratio (VSWR) is recommended for your desired band. Of course, the transmission line should be a coaxial cable. CAUTION: Protect your transceiver from lightning by using a lightning arrestor. PL-259 CONNECTOR INSTALLATION EXAMPLE q 30 mm Coupling ring 10 mm (soft solder) Slide the coupling ring down. Strip the cable jacket and soft solder. w e r 10 mm Soft solder 12 mm the cable as Strip shown at left. Soft solder the center con-

ductor. solder solder Slide the connector body on and solder it. Screw the coupling ring onto the connector body. ANTENNA SWR Each antenna is tuned for a specified frequency range and SWR may be increased out-of-range. When the SWR is higher than approx. 2.0 : 1, the transceivers power drops to protect the nal transis-

tors. In this case, an antenna tuner is useful to match the transceiver and antenna. Low SWR allows full power for transmitting even when using the antenna tuner. The IC-703 has an SWR meter to monitor the antenna SWR continuously. 11 INSTALLATION AND CONNECTIONS 2 Installation D Single body mounting MB-62

(optional) Supplied with the MB-62*

Flat washer Spring washer Nut D Stand To raise the stand:

With the transceiver upside down, pull the stand to-

wards the rear panel and then upwards, as illus-

trated below. then up Pull back

*CAUTION: Non-supplied screws (longer than 8 mm) may damage the internal units. D Front panel separation q While pulling the panel release button towards you, slide the front panel to the right (g. 1). w Attach the optional OPC-581 to the main body and tighten the supplied screw as in g. 2. e Attach the other end of the OPC-581 to the de-

tached front panel as in g. 3. fig. 1 fig. 2 CAUTION: NEVER detach/attach the front panel when connecting the DC power supply (or battery). Make sure the disconnecting DC power cable from the [13.8 V] receptacle on the transceiver rear panel. fig. 3 Separation cable Latch Separation cable D Front panel mounting q Attach the MB-63 to a flat surface using the two supplied screws (g. 1). w Fix the detached front panel to the MB-63 as illus-

trated in g. 2. fig. 1 BE CAREFUL of the orientation of the MB-63, oth-

erwise, the front panel may become attached in the opposite direction. fig. 2 2 12 2 INSTALLATION AND CONNECTIONS Required connections AF RF SQL RIT SUB M-CH SHIFT POWER P.AMP ATT TUNER PHONES MODE TS RX TX DISPLAY LOCK Y BAND BAND Z MENU F 1 F 2 F 3 GROUND (p. 11) Use the heaviest gauge wire or strap available and make the connection as short as possible. Grounding prevents electrical shocks, TVI and other problems. HF/50 MHz ANTENNA 13 MICROPHONE (p. 10) HM-103 CW KEY (p. 28) Connects to DC 9.015.8 V power supply. See p. 15 for details. INSTALLATION AND CONNECTIONS 2 Advanced connections AF RF SQL RIT SUB M-CH SHIFT POWER P.AMP ATT TUNER PHONES MODE TS RX TX DISPLAY LOCK Y BAND BAND Z MENU F 1 F 2 F 3 HEADPHONES SPEAKER OPC-589 (p. 92) 2 or Selectable with the [PHONE/SPEAKER] switch on the back of the front panel. EXTERNAL SPEAKER (p. 91) SM-20 ACC SOCKET (p. 8) DATA SOCKET (p. 8) 6-pin mini DIN socket to connect to a TNC, etc. for packet operation. SP-7/SP-10 DESKTOP (p. 91) MICROPHONE AH-2b AH-4 (p. 16) REMOTE (p. 71) Used for computer control and transceive operation. 14 2 INSTALLATION AND CONNECTIONS DC Power voltage Depending on the applied voltage from the connected power supply, a boarder voltage of 11.0 V is set as the point where the IC-703 switches between normal op-

erating mode (over 11.0 V), and battery operating mode (under 11.0 V: power save mode). However when the connected voltage decreases from 13.8 V to 11.0V, the IC-703 switches from normal mode to battery mode. Conversely the IC-703 switches back to normal mode from battery mode DC Power supply connections Use a 13.8 V DC power supply with at least 3 A ca-

pacity. when operating IC-703 with AC power. Refer to the diagram below for connection. CAUTION:

Before connecting the DC power cable, check the following important items. Make sure:

The [POWER] switch is OFF. when the voltage reaches 11.5 V. This 0.5 V voltage difference prevents irregular switching between nor-

mal mode and battery mode, caused by the voltage drop which are current capacity, receiving or transmit-

ting. When 11.3 V voltage is applied, the IC-703 may acti-

vate the battery operating mode depending on the current capacity of the power supply. Output voltage of the power source is 9.015.8 V when you use a non-Icom power supply. DC power cable polarity is correct. Red: positive (+) terminal, Black: negative () terminal CONNECTING PS-125 DC POWER SUPPLY CONNECTING A DC POWER SUPPLY PS-125 Transceiver

*13.8 V; at least 3.0 A continuous A DC power supply*

Red

+

Black _ AC outlet Connect to an AC outlet using the supplied AC cable. Ground DC power cable Optional OPC-1248 to DC power receptacle Supplied OPC-1229 AC cable 4 A fuses Battery connections RWARNING NEVER connect to a battery without supplied DC fuse, otherwise a re hazard occur. NEVER connect the transceiver directly to a 24 V battery. CONNECTING A VEHICLE BATTERY Grommet 15 DO NOT use the cigarette lighter socket for power connections. (See p. 7 for details) Attach a rubber grommet when passing the DC power cable through a metal plate to prevent a short circuit. black red Note: Use terminals for the cable connections. Crimp 12 V battery Supplied DC power cable Solder INSTALLATION AND CONNECTIONS 2 External antenna tuners and linear amplier CONNECTING THE AH-4 IC-703 AH-4 Long wire or optional AH-2b ANT Ground Coaxial cable

(from the AH-4) CONNECTING THE AT-180 Ground ACC cable supplied with the AT-180

[ACC]

IC-703

[ANT]

AT-180

[ACC]

one of two connectors Ground

[ANT]

Coaxial cable supplied with the AT-180

[TRANSCEIVER]

Ground 2 HF to 6 m antenna Note:

Turn the IC-703s power OFF when connecting the AT-180, otherwise, the CPU may malfunction and the AT-180 may not function properly. CONNECTING A NON-ICOM LINEAR AMPLIFIER R WARNING:

Set the transceiver output power and linear ampli-

er ALC output level referring to the linear amplier instruction manual. Be sure the linear amplier key-

ing circuit control voltage is compatible with the IC-

703, before connecting to HSEND line (ACC cable). The ALC input level must be in the range 0 V to 4 V, and the transceiver does not accept positive voltage. Non-matched ALC and RF power settings could cause a re or damage the linear amplier. To an antenna 50 coaxial cable RF OUT RF IN ALC SEND Relay The specifications for the SEND relay are 16 V DC 0.5 A. If this level is exceeded, a large external relay must be used. IC-703 ANT ALC (Blue) HSEND

(Orange) Ground ACC 13.8V (Gray) ACC cable 16 3 BASIC OPERATION When rst applying power (CPU resetting) Before rst applying power, make sure all connections required for your system are complete by referring to Chapter 2. Then, reset the transceiver using the fol-

lowing procedure.

[POWER]

Resetting CLEARS all programmed contents in memory channels and returns all initial set mode and quick set mode contents to their default values. q Make sure the transceiver power is OFF. w While pushing [Y] and [Z], push [POWER] to turn power ON. CLEAR ? OK appears as shown at right. e Then push [F-3] for 1 sec to start resetting. The internal CPU is reset. The display changes to All indication, RF power, Power supply voltage and Initial frequency and Mode as shown at right.

[Y]

[Z]

LSB USB CW R RTTY AM WFM TSQL SPL N W DSP ANF NR CLEAR ? OK ALC SWR PO 1 1.5 2 3 5 Push [F-3]

for 1 sec. F 3 NB VOX F-BK COM F S1 20 5 3 7 9 AGC 60dB DUP VFO A VFO B MEMO BLANK S CH 10 40 USB S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH M1 SPL A/B XFC 10 5 RF POWER DC SUPPLY D M1 display selection If you cant gure out how to return to the M1 display:

While pushing [MENU], turn power ON. The transceivers initial frequency and mode Initial settings After resetting the transceiver, set controls and switches as shown in the diagram below.

[POWER]: OFF

[P.AMP/ATT]: OFF

(indicator lights out)

[TUNER]: OFF

(indicator lights out)

[RIT/SUB]: OFF

(indicator lights out)

[SHIFT]: Center AF RF SQL RIT SUB M-CH SHIFT POWER P.AMP ATT TUNER PHONES MODE TS RX TX DISPLAY LOCK Y BAND BAND Z MENU F 1 F 2 F 3

[AF]: Max. CCW CCW : counterclockwise

[RF/SQL]: Center

[LOCK]: OFF

(indicator light out) Turn power ON, then check the display. If any of the following indicators appear, turn them OFF as follows:

Tuning step indicators, Z, (SSB, CW or RTTY):

Memory mode indicator, MEMO:

Push [TS]. Use [(F-3)V/M] in the M2 display (p. 75). MHz tuning step indicator, Z, (FM or AM):

Split indicator, :

Push [TS]. 1 Hz frequency readout (SSB, CW or RTTY):

Push and hold [TS]. 17 Use [(F-1)SPL] in the M1 display (p. 75). BASIC OPERATION 3 VFO description VFO is an abbreviation of Variable Frequency Oscilla-

tor, and traditionally refers to an oscillator. The IC-703s VFO can store a frequency and an operating mode. You can call up a desired frequency to a VFO with the memo pad-read switch (p. 60) or with the memory transfer switch (p. 58). You can also change the fre-

quency with the main dial and select an operating mode with the [MODE] switch or call up previously ac-

cessed frequency and modes with the band stacking register (p. 22). The IC-703 has two VFOs, specially suited for split fre-

quency operation. The VFOs are called VFO A and VFO B. You can use the desired VFO to call up a fre-

quency and operating mode for operation. VFO Select MODE SWITCH USB VFO A CH M1 SPL A/B XFC Transfer MEMO PAD 28.025 MHz Transfer MEMORY CHANNEL 7.001 MHz Change Transfer DIAL BAND 21.295 MHz D The differences between VFO and memory mode VFO MODE Each VFO shows a frequency and operating mode. If the frequency or operating mode is changed, the VFO automatically memorizes the new frequency or oper-

ating mode. MEMORY MODE (pgs. 5660) Each memory channel shows a frequency and oper-

ating mode like a VFO. Even if the frequency or mode is changed, the memory channel does not memorize the new frequency or operating mode. When the VFO is selected from another VFO or memory mode, the last-used frequency and operat-

ing mode for that VFO appear. When a memory channel is selected from another memory channel or VFO mode, the memorized fre-

quency and operating mode appear.

[EXAMPLE]

[EXAMPLE]

USB USB USB USB VFO is selected. The frequency is changed. Memory mode is selected. VFO is selected again. VFO A VFO A CH CH MEMO CH VFO A CH USB USB USB USB Memory channel 1 is selected. The frequency is changed. Another memory channel is selected. Memory channel 1 is selected again. MEMO CH MEMO CH MEMO CH MEMO CH Changed frequency (14.123 MHz) appears. Changed frequency (14.123 MHz) does not appear and memorised frequency (14.100 MHz) appears instead. 3 18 3 BASIC OPERATION Frequency setting Band selection All HF ham bands, the 50 MHz band and a general coverage receiver band are included in the IC-703. Push [(Y)BAND]/[(Z)BAND] to select the desired band. Pushing [(Y)BAND]/[(Z)BAND] continuously scrolls through the available bands. The band stacking register can also be used to se-

lect bands. Refer to p. 22. LSB

[Y]

[Z]

FM Z USB Z USB USB Programmable tuning steps Programmable tuning steps are available to suit your operating requirements. These tuning steps are:

Independently selectable for each mode Selectable from 0.01 (FM/AM only), 0.1, 1, 5, 9, 10, 12.5, 20, 25 and 100 kHz q Push [TS] one or more times until the programma-

ble tuning step indicator Z appears above the 1 kHz digit. Rotating the main dial changes the frequency according to the set tuning step. w Push [TS] for 1 sec. while the programmable tuning step indicator appears to enter the tuning step se-

lection mode. Rotate DIAL appears. e Rotate the main dial to set the desired tuning step. Change the mode and select tuning steps for other modes, if desired. r Push [TS] to exit the tuning step selection mode. t Rotate the main dial to change the frequency ac-

cording to the set tuning step.

[TS] Main dial Programmable tuning step indicator USB S1 3 5 7 9 20 40 60dB VFO A PO M1 5 SPL 10 CH A/B XFC USB 10 kHz tuning step is selected for USB operation. Rotate DIAL 19 1 Hz and 10 Hz tuning steps When neither the quick tuning step or programmable tuning step Z appear, rotating the main dial changes the frequency in increments of 1 or 10 Hz. These tuning steps are only available in SSB, CW and RTTY modes. q Select SSB, CW or RTTY mode if necessary. w Push [TS] for 1 sec. to toggle between the 1 Hz and 10 Hz step settings. When the 1 Hz step is selected, the 1 Hz digit appears in the frequency indication; when the 10 Hz step is se-

lected, the 1 Hz digit disappears from the frequency in-

dication. Rotating the main dial changes the frequency 1 Hz or 10Hz tuning step. 1 MHz quick tuning step The quick tuning step function allows you to change the frequency in 1 MHz steps when rotating the main dial. This function is only available in FM and AM modes. q Select FM or AM mode if necessary. w Push [TS] momentarily to toggle between the 1 MHz tuning step and the programmable tuning step. Z appears above the 1 MHz indicator when the 1 MHz tuning step is selected. Rotating the main dial changes the frequency 1 MHz or set tuning step. BASIC OPERATION 3

[MODE]

[TS]

Main dial Rotating the main dial changes the frequency in 10 Hz steps. Rotating the main dial changes the frequency in 1 Hz steps. 3 USB VFO A Push TS for 1 sec. USB VFO A

[MODE]

[TS]

Main dial Quick tuning step indicator FM FM Rotating the main dial changes the frequency in 1 MHz steps. 20 3 BASIC OPERATION

[TS] switch flow chart SSB/CW/RTTY modes Any mode FM/AM modes USB TS USB Appears TS Appears FM 10 Hz tuning momentarily Programmable step tuning

(100 Hz 100 kHz) momentarily 1 MHz tuning 1 sec. TS 1 sec. TS 1 sec. USB momentarily USB 1 Hz tuning Appears Rotate DIAL Selectable for each mode. Sub dial function The sub dial function allows you to change the oper-

ating frequency using the [M-CH] control. This gives you more control in tuning since the [M-CH] knob is detentedeach click changes the frequency accord-

ing to the set tuning step. This function is always available in FM and AM modes. However, in SSB, CW and RTTY modes, the initial set mode item 21 SUB DIAL (p.61), must be set to FrEq. q Push [RIT/SUB] to turn the sub dial function ON. The [SUB] indicator lights green; if it lights red, the RIT function is activatedsub dial function must be set in initial set mode in this case. w Rotate [M-CH] to change the operating frequency according to the set tuning step. e Push [RIT/SUB] again to turn the function OFF. The [SUB] indicator turns off. 21

[M-CH]

[RIT/SUB]

RIT/

SUB Indicator lights green while the sub dial function is activated. Quick band change function The quick band change function automatically stores the last frequency and mode used for each band in a band stacking register. This is convenient for contest operation, etc. The tables below show the quick band change default settings for each band. q Select S3. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S3. w Push [F-1], [F-2] or [F-3] to select a band stacking register. The default settings for [F-1], [F-2], [F-3] are 7, 14, 21 MHz bands, respectively. e To change the settings for [F-1], [F-2] or [F-3] from their defaults, push [F-1], [F-2] or [F-3] for 1 sec. one or more times to until the desired band ap-

pears in the display above the corresponding switch. The last-used frequency and mode for the selected band are displayed. BAND 1.9 MHz 3.5 MHz 7 MHz 10 MHz 14 MHz 18 MHz 21 MHz 24 MHz 28 MHz 50 MHz*2 General*3 FREQUENCY 1.90000 MHz*1 3.55000 MHz 7.05000 MHz 10.12000 MHz 14.10000 MHz 18.10000 MHz 21.20000 MHz 24.95000 MHz 28.50000 MHz 50.10000 MHz 15.00000 MHz MODE CW LSB LSB CW USB USB USB USB USB USB USB

*1 1.83000 MHz for Italy version (#10, #20).

*2 50 MHz band is not available for some version.

*3 General refers to the general coverage receiver (GEN in the display) and the range varies according to version. BASIC OPERATION 3

[F-1]

[F-3]

[MENU]

[F-2]

[DISPLAY]

USB S1 3 5 7 9 20 40 60dB VFO A BLANK Display shows the default bands for the quick band change function. 3 PO 5 10 S3 7 14 21 CH USB S1 3 5 7 9 20 40 60dB VFO A BLANK PO S3 7 5 10 GEN 21 CH Display shows [F-2]

has been changed from its default of the 14 MHz band to the general receiver band. 22 3 BASIC OPERATION Operating mode selection The following modes are available in the IC-703:

SSB (LSB/USB), CW, CW- (CW reverse), RTTY and RTTY (RTTY reverse), FM, AM. SSB (LSB/USB), CW, RTTY, SSB-D, FM and AM modes selection To select the desired mode of operation, push

[MODE] one or more times, then push [MODE] for 1 sec., if necessary. See the diagram at right for the order of selection. The selected mode is indicated in the function display. CW- (CW reverse) mode selection q When selecting CW mode, push [DISPLAY] for 1 sec. to enter quick set mode. w Push [MENU] one or more times to select item Q3 CW REV during CW mode.

[Y]/[Z] or [M-CH] can also be used. e Rotate the main dial to select CW reverse. r Push [DISPLAY] to exit quick set mode. CW- appears. RTTY (RTTY reverse) mode selection q When selecting RTTY mode, push [DISPLAY] for 1 sec. to enter quick set mode. w Push [MENU] one or more times to select item Q2 RTTY REV during RTTY mode.

[Y]/[Z] or [M-CH] can also be used. e Rotate the main dial to select RTTY reverse. r Push [DISPLAY] to exit quick set mode. RTTY appears. Note:If a desired mode cannot be selected, it may be hidden using initial set mode (p. 76).

[MODE]

OPERATING MODE SELECTION USB CW LSB Memory keyer set mode RTTY SSB-D FM AM Push MODE momentarily Push MODE for 1 sec.

[MODE]

[Y]

[Z]

[M-CH]

[MENU]

[DISPLAY]

Volume setting Rotate [AF] control to output a suitable audio level.

[AF]

AF RF/SQL Decreases Increases No audio output Max. audio output 23 BASIC OPERATION 3 Squelch and receive (RF) sensitivity Adjusts the RF gain and squelch threshold level. The squelch removes noise output from the speaker

(closed position) when no signal is received. The squelch is particularly effective for FM mode. It is also available for other modes. The control can be set as the RF gain control only

(squelch is xed open) or squelch control (RF gain is xed at maximum) in initial set mode (p. 79). See below right. The 11 to 12 oclock position is recommended for any set-

ting of the [RF/SQL] control.

[RF/SQL]

SET MODE RF+SQL

(default) SQL AUTO OPERATION Can be used in all modes. Functions as noise squelch or S-meter squelch in AM and FM modes; S-

meter squelch only in other modes. Operates as a squelch control. RF gain is xed at maximum sensitivity. Operates as an RF gain control in SSB, CW and RTTY modes. Squelch is xed open. Operates as a squelch control in AM and FM modes. RF gain is xed at maximum sensitivity. When setting as RF gain/squelch control Noise squelch (FM mode) Squelch is open. RF gain adjustable range Recommended level Maximum RF gain S-meter squelch 3 When functioning as RF gain control (Squelch is xed open; SSB, CW, RTTY only) Adjusting RF gain (Receive sensitivity) Normally, [RF/SQL] is set to the 11 oclock position. Rotate [RF/SQL] to the 11 oclock position for maxi-

mum sensitivity. Rotating counterclockwise from the maximum position re-

duces sensitivity. The S-meter indicates receive sensitivity. Adjustable range Minimum RF gain Maximum RF gain Adjusting squelch (Removing non-signal noise) Rotate [RF/SQL] clockwise when receiving no signal, until the noise just disappears.

[RX] indicator light goes out. Rotating [RF/SQL] past the threshold point invokes the S-

meter squelch this allows you to set a minimum signal level needed to open the squelch. When functioning as squelch control (RF gain is xed at maximum) Noise squelch threshold

(FM mode) Squelch is open. Noise squelch (FM mode) S-meter squelch threshold S-meter squelch Shallow Deep 24 3 BASIC OPERATION Dial lock function The dial lock function prevents accidental changes caused by the tuning dial. Push [LOCK] to turn the dial lock function ON and OFF. LOCK indicator lights while the dial lock function is activated. Basic transmit operation D Transmitting Before transmitting, monitor your selected op-

erating frequency to make sure transmitting wont cause interference to other stations on the same frequency. Its good Amateur practice to listen rst, and then, even if nothing is heard, ask is the frequency in use once or twice, be-

fore you begin operating on that frequency. q Push [PTT] (microphone) to transmit. The [TX] indicator lights red. w Release [PTT] (microphone) to return to receive. D Maximum output power q Push [POWER] for 1 sec. to turn power OFF. w While pushing [LOCK], push [POWER] to turn power ON and enter initial set mode. e Push [MENU] one or more times to select 1 MAX POWSET, if necessary.

[M-CH] or [Y]/[Z] can also be used. r Rotate the main dial to select the desired maximum output power. Maximum output power is selectable 0.5, 1, 2.5, 5 or 10. Default setting is 10. t Push [POWER] to turn power OFF, and ON again. 25 Lights while the dial lock function is activated.

[LOCK]

[PTT]

HM-103

[POWER]

[Y]

[Z]

[M-CH]

[MENU]

[LOCK]

1 MAX POWSET D Setting output power q Push [DISPLAY] for 1 sec. to select quick set mode. w Push [MENU] one or more times to select Q1 RF QUICK SET MODE POWER. e Rotate the main dial to select the desired output. Output power is displayed in 11 steps (L, 19 and H) but is continuously selectable. r Push [DISPLAY] to exit quick set mode. Available power Power supply voltage 13.8 V

(DC power mode) 9.6 V

(Battery mode)

*Carrier power SSB/CW RTTY/FM AM*

0.110 W 0.14 W 0.15 W 0.12 W D Setting microphone gain Microphone gain must be adjusted properly so that your signal does not distort when transmitted. QUICK SET MODE q Select SSB or another phone mode (AM or FM mode). w Push [DISPLAY] for 1 sec. to select quick set mode. e Push [MENU] one or more times to select Q2 MIC GAIN. The ALC meter is selected automatically when operat-

ing in SSB mode. r While speaking into the microphone adjust the mi-

crophone gain so that the ALC meter does not peak past the ALC zone. t Push [DISPLAY] to exit quick set mode. BASIC OPERATION 3 Main dial

[MENU]

[DISPLAY]

USB Maximum output power is selected. S1 3 5 7 9 20 40 60dB PO 5 10 Q1 RF POWER Main dial

[MENU]

[DISPLAY]

USB Microphone gain is set to 5. S1 3 5 7 9 20 40 60dB ALC Q2 MIC GAIN ALC ALC zone 3 26 4 RECEIVE AND TRANSMIT Operating SSB q Push [(Y)BAND]/[(Z)BAND] to select the desired band. w Push [MODE] momentarily or push for 1 sec. to se-

lect LSB or USB mode. Below 10 MHz LSB is automatically selected; above 10 MHz USB is automatically selected. e Rotate [AF] control to set audio to a comfortable lis-

tening level. r Rotate the main dial to tune a desired signal. S-meter indicates received signal strength. t Push [PTT] (microphone) to transmit. The TX indicator lights red. y Speak into the microphone at your normal voice level. Adjust MIC GAIN at this step, if necessary. (p. 26) u Release [PTT] (microphone) to return to receive. D Convenient functions for receive Preamp and attenuator (p. 46) Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. Lights green when the preamp is set to ON. Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. Push [P.AMP/ATT] momentarily to turn the attenua-

tor OFF. Lights red when the attenuator is set to ON. Noise blanker (p. 48) While M3 is selected, push [(F-2)NB] to turn the noise blanker ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. NB appears when the noise blanker is set to ON. Push [(F-2)NB] for 1 sec. to enter the noise blanker set mode. IF shift (p. 47) Rotate [SHIFT] control. D Convenient functions for transmit Speech compressor (p. 54) While M4 is selected, push [(F-2)COM] to turn the speech compressor ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. COM appears when the speech compressor is set to ON. Push [(F-2)COM] for 1 sec. to enter the compression level set mode. 27

[AF]

[TX] indicator

[MODE]

[Y]

[Z]

LSB or USB appears Main dial LSB USB CW R RTTY AM WFM S1 3 5 7 9 20 40 60dB VFO A PO CH M1 SPL A/B XFC 10 5 AGC (auto gain control) (p. 48) While M4 is selected, push [(F-3)AGC] to select AGC fast and AGC slow. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. FAGC appears when the fast time constant is se-

lected. Noise reduction (p. 50) While S4 is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. NR appears when the noise reduction is set to ON. Auto notch lter (p. 50) While S4 is selected, push [(F-1)ANF] to turn the auto notch lter function ON and OFF. ANF appears when the noise reduction is set to ON. Carrier frequency control (p. 75) While Q3 is selected, rotate main dial to adjust the audio tone. Push [DISPLAY] for 1 sec. to enter the quick set mode. Push [MENU] one or more times to select Q3. VOX (voice operated transmit) (p. 53) While M4 is selected, push [(F-1)VOX] to turn the VOX function ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. VOX appears when the VOX function is set to ON. Push [(F-1)VOX] for 1 sec. to enter the VOX set mode. Operating CW D Connections for CW Rear panel Rear panel

[ACC]

[KEY]

4 8 12 123 7 6 5 9 11 10 13 For no break-in operation:

Connect an external switch such as a foot switch; or use the RTTY SEND terminal for all bands. (See p. 38)

[MICROPHONE]

See p. 31 for connection details:

Paddle operation from front panel MIC connector. RECEIVE AND TRANSMIT 4 Keyer set mode setting CW K4 CW PADDLE N o r m a l CW Paddle K4 CW PADDLE R ev e rs e CW 4 K4 CW PADDLE B u g CW Straight key K4 CW PADDLE CW Microphone K4 CW PADDLE 28

[AF]

[TX] indicator [MODE] Main dial

[Y]

[Z]

[MENU]

[F-2]

[DISPLAY]

CW or CW appears LSB USB CW RTTY AM WFM R S1 3 5 7 9 20 40 60dB VFO A PO CH M4 1/4 KEY AGC 10 5 F 2 CW Semi break-in operation is selected. K1 BK-IN CW S1 3 5 BK 7 9 20 40 60dB VFO A Appears PO M4 5 10 1/4 KEY CH AGC CW Delay time of 6.0 dots is selected for semi break-in operation. K2 BK-IN DELAY 4 RECEIVE AND TRANSMIT D CW operation q Connect a paddle or straight key as at previous page. w Push [(Y)BAND]/[(Z)BAND] to select the desired band. e Push [MODE] momentarily to select CW mode. After CW mode is selected, push [MODE] for 1 sec. to toggle between CW and Memory keyer modes. r While the quick set mode item Q3 is selected in CW mode, rotate main dial to select CW or CW mode. Push [DISPLAY] for 1 sec. to enter the quick set mode. Push [MENU] one or more times to select Q3. Push [DISPLAY] momentarily to return to normal oper-

ating mode. t Rotate [AF] control to set audio to a comfortable listening level. y Rotate the main dial to simultaneously tune a de-

sired signal and its side tone. u Set CW setting in the keyer set mode. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. Push [(F-2)KEY] for 1 sec. to enter the keyer set mode.

(p. 32) i Set CW break-in operation as semi break-in, full break-in or OFF. Push [MENU] one or more times to select K1 BK-

IN. Rotate the main dial to select CW break-in operation. FULL: full break-in on OFF : no break-in (ACC socket connection is neces-

: semi break-in sary as at previous page.) o Set the CW delay time when semi break-in opera-

tion is selected. Push [MENU] one or more times to select K2 BK-

IN DELAY. Rotate the main dial to set the desired delay time (see p. 32 for details).

!0 Keying to transmit, use the electric keyer or pad-

dle to key your CW signals. The TX indicator lights red. The Po meter indicates transmitted CW signal strength.

!1 Release keying to return to receive. 29 D Convenient functions for receive Preamp and attenuator (p. 46) Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. Lights green when the preamp is set to ON. Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. Push [P.AMP/ATT] momentarily to turn the attenua-

tor OFF. Lights red when the attenuator is set to ON. Noise blanker (p. 48) While M3 is selected, push [(F-2)NB] to turn the noise blanker ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. NB appears when the noise blanker is set to ON. Push [(F-2)NB] for 1 sec. to enter the noise blanker set mode. AGC (auto gain control) (p. 48) While M4 is selected, push [(F-3)AGC] to select AGC fast and AGC slow. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. FAGC appears when the fast time constant is se-

lected. D Convenient functions for transmit Break-in function (p. 32) While M4 is selected, push [(F-2)KEY] for 1 sec. to enter the keyer set mode. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. Rotate the main dial to select the break-in OFF, semi break-in or full break-in. BK or F-BK appears when the semi break-in or full break-in is set to ON, respectively. D CW reverse mode QUICK SET MODE The CW (CW Reverse) mode receives CW signals with a reverse side CW carrier point like that of LSB and USB modes. Use this mode when interference signals are near the desired signal and you want to change the interference tone. q Select CW mode with [MODE]. w Push [DISPLAY] for 1 sec. to enter quick set mode. e Push [MENU] one or more times to select Q3 CW REV, then rotate the main dial to select CW and CW modes. Check the interference tone. rPush [DISPLAY] momentarily to exit quick set mode. RECEIVE AND TRANSMIT 4 IF shift (p. 47) Rotate [SHIFT] control. Noise reduction (p. 50) While S4 is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. NR appears when the noise reduction is set to ON. Auto notch lter (p. 50) While S4 is selected, push [(F-1)ANF] to turn the auto notch lter function ON and OFF. ANF appears when the noise reduction is set to ON. 14 function While M4 is selected, push [(F-1)1/4] to turn the 14 function ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. 4

[MENU]

[MODE]

[DISPLAY]

Main dial Receive audio tone response

(Normal) CW 600 Hz

(Reverse) CW 600 Hz inteference signal BFO inteference BFO signal 30 4 RECEIVE AND TRANSMIT D CW pitch control The received CW audio pitch and monitored CW audio pitch can be adjusted to suit your preferences

(300 to 900 Hz) without changing the operating fre-

quency. q Enter the keyer set mode. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. Push [(F-2)KEY] for 1 sec. to enter the keyer set mode. w Push [MENU] one or more times to select K3 CW PITCH, then rotate the main dial to set the de-

sired pitch. e Push [DISPLAY] to exit the keyer set mode. D Electronic CW keyer The IC-703 has an electronic keyer. Both keying speed and weight (the ratio of dot : space : dash) can be set. Setting the electronic keyer q Enter the keyer set mode. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. Push [(F-2)KEY] for 1 sec. to enter the keyer set mode. w Push [MENU] one or more times to select K4 CW PADDLE, then rotate the main dial to select the paddle type. When ud is selected, the up/down switches on the mi-

crophone can be used as a paddle. e Push [MENU] one more time to select item K5 RATIO, then rotate the main dial to select the de-

sired weight. Key weight can be selected from 2.8 to 4.5. Check the selected ratio with the side tone function in CW mode. r Push [DISPLAY] momentarily to return to M4. t Push [DISPLAY] for 1 sec. to enter quick set mode. y Push [MENU] once or twice to select Q2 KEY SPEED, then rotate the main dial to select the de-

sired keying speed.

[M-CH] or [Y]/[Z] can also be used to select Q2 KEY SPEED. Keying speed can be selected from 6 to 60 wpm. u Push [DISPLAY] momentarily to return to M4. Paddle operation from front panel MIC connector Connect a CW paddle as at right to operate an elec-

tronic keyer from the front panel MIC connector. This function is available from the front panel mic connector only. Be sure to select item n, r, buG or oFF in K4 CW PADDLE in the keyer set mode. (p. 32) Connect straight key to DOT side. 31

[MENU]

[F-2]

[DISPLAY]

Main dial CW This shows the default setting for the CW pitch control (600 Hz). K3 CW PITCH

[Y]

[Z]

[M-CH]

[MENU]

[F-2]

[DISPLAY]

Main dial KEYING WEIGHT EXAMPLE: morse code K DASH DOT

(Fixed*) DASH Weight setting:

1:1:3 (default) Weight setting:

Adjusted Adjustable range SPACE (Fixed*)

*SPACE and DOT length can be adjusted with Q2 KEY SPEED only. CW paddle DOT DASH front panel MIC connector E u MIC U/D w 3.9 k 5%

2.2 k 5%

RECEIVE AND TRANSMIT 4 The default is OFF. The default is 7.5 dots. The default is 600 Hz. The default is n, normal. D CW side tone function When the transceiver is in the receive condition (and the break-in function is OFF below) you can listen to the tone of your CW signal without actually trans-

mitting. This allows you to match your transmit signal exactly to another stations. This also convenient for CW practice. CW side tone level can be adjusted in the initial set mode (p. 77). D Keyer set mode While M4 is selected in CW mode, push [(F-2)KEY] for 1 sec. to enter the keyer set mode. K1 BK-IN This item sets the CW break-in operation. The break-

in operation is selectable from off, on and FULL. K2 BK-IN DELAY This item adjusts break-in delay time for CW semi break-in operation. The delay time is selectable from 2.0 to 13.0 (dots). K3 CW PITCH This item sets the CW pitch. CW pitch is adjustable from 300 to 900 Hz in 10 Hz steps. K4 CW PADDLE

: normal (for electronic keyer use)

: reverse (for electronic keyer use) This item adjusts the CW paddle type. Four selec-

tions are available. n r buG : When using the electronic keyer, key down produces a dash, releasing the key automat-

ically produces a dot(s). oFF : Turns OFF the electronic keyer (for straight key use) ud : For using the microphones [UP]/[DN] keys in-

stead of the CW paddle. CW CW CW CW K5 RATIO This item adjusts the CW key ratio (or weight). The ratio can be selected from 2.8 to 4.5. CW The default is 3.0. 4 32 4 RECEIVE AND TRANSMIT Memory keyer functions The transceiver has a number of convenient functions for the electronic keyer that can be accessed from the memory keyer menu. q Select CW mode with [MODE]. w Push [MODE] for 1 sec. to select the memory keyer send menu. Push [MODE] momentarily to return to normal CW op-

erating mode. e Push [DISPLAY] to enter the memory keyer menu. See the diagram below. Push [DISPLAY] momentarily to return to the memory keyer send menu.

[MODE]

[DISPLAY]

Memory keyer menu CW EDT 001 SET DISPLAY Push DISPLAY Push CW mode CW S1 3 5 7 9 20 60dB VFO A BLANK 40 PO 1 1.5 2 CH M4 1/4 KEY AGC 3 5 10 MODE Push MODE Push for 1 sec. Memory keyer send menu CW S1 3 5 7 9 20 60dB VFO A BLANK 40 PO 1 1.5 2 CH

-1 MK1 MK2 MK3 3 5 10 MENU F 1 F 2 F 3 MENU F 1 F 2 F 3 Push [F-1]

Push [F-2]

Edit menu CW Push [MENU]() or [DIAPLAY]

Push

[DISPLAY]

Contest number set mode CW CW CW Push [F-3]

Push

[DISPLAY]

Menory keyer set mode CW CW MK1 MK2 MK3 01 NUM STYLE 01 REPEAT TIME MENU F 1 F 2 F 3 Push Push Push 02 CNT UP TRIG 02 MSG DISPLAY MENU Push*

03 PRESENT No. MENU Push*

*Set mode item can be selected with [Y BAND]/[Z BAND] or

[M-CH] during set mode. Push [MENU]() or [DIAPLAY]

Push [MENU]() or [DIAPLAY]

Push [MENU]() or [DIAPLAY]

CW CW CW CQ TEST C _ UR 5NN* B _ CFU TU _ MENU F 1 F 2 F 3 MENU F 1 F 2 F 3 MENU F 1 F 2 F 3 33 D Memory keyer send menu Pre-set characters can be sent using the memory keyer send menu. Contents of the memory keyer are set using the edit menu. Transmitting q Select CW mode with [MODE]. w Push [MODE] for 1 sec. to enter the memory keyer send menu. e Set the break-in function ON (p. 32). When step r is performed during the break-in func-

tion OFF, monitors the memory keyer contents. r Push one of the function keys ([(F-1)MK1] to

[(F-3)MK3]) to send the contents of the memory keyer. Pushing a function key for 1 sec. repeatedly sends the contents and blinks MK1, MK2 or MK3 indication;

push any function key to cancel the transmission. Keying with the connected straight key or paddle to

[KEY] on the rear panel is also cancels the transmis-

sion. Under bars (_ _ _) are indicated for the count up trig-

ger set channel. The contest number counter is incremented each time the contents are sent. Push [MENU] to reduce the contest number count by 1 when resending contents to unanswered calls. t Push [MODE] momentarily to exit memory keyer send menu and return to normal CW mode indica-

tion. RECEIVE AND TRANSMIT 4

[MODE]

[F-1]

[F-3]

[MENU]

[F-2]

Memory keyer send menu CW CW S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH

-1 MK1 MK2 MK3 10 5

---

MENU F 1 F 2 F 3 Sends [(F-1)MK1][(F-3)MK3] contents. 4 Memory keyer send menu

-1 MK1 MK2 MK3

---

Count up trigger indication MK1 send indication

-1 CQ TEST CQ MK2 send indication

-1 UR 5NN001 B Counter MK3 send indication

-1 CFM TU 34 4 RECEIVE AND TRANSMIT D Editing a memory keyer The contents of the memory keyer memories can be set using the memory keyer edit menu. The memory keyer can memorize and re-transmit 3 CW key codes for often-used CW sentences, contest numbers, etc. Total capacity of the memory keyer is 50 characters per memory channel. Programming contents q Select CW mode with [MODE]. w Enter the memory keyer menu. Push [MODE] for 1 sec. to enter the memory keyer send menu. Push [DISPLAY] momentarily to enter the memory keyer menu. e Push [(F-1)EDT] to enter the edit menu. r Push the multi-function key, [(F-1)MK1], [(F-2)MK2]

or [(F-3)MK3], to select the desired memory keyer channel to be edited. t Input the desired character by rotating the main dial. Selectable characters (with the main dial);

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z / ? . , * ^

NOTE:

^ is used to transmit a following word with no space such as AR. Put ^ before a text string such as ^AR, and the string AR is sent with no space.

* is used to insert the CW contest number. The contest number automatically increments by 1. This function is only available for one memory keyer channel at a time. Memory keyer channel MK2 used * by default. Push [(F-2)] to erase characters. y Push [(F-1)] or [(F-3)] to move the cursor back-

wards or forwards, respectively. u Repeat steps t and y to input the desired char-

acters. i Push [MENU] or [DISPLAY] three times to return to the keyer send menu. Pre-programmed contents CONTENTS CH MK1 CQ TEST CQ TEST DE ICOM ICOM T MK2 UR 5NN* BK MK3 CFM TU

[MODE] Main dial

[F-1]

[F-3]

[MENU]

[F-2]

[DISPLAY]

Memory keyer menu EDT 001 SET F 1 Push Edit menu MK1 MK2 MK3 F 3 Push MK3 indication (default)

[ DEL]

Displays [DEL] for 1 sec. then shows the default contents. CFU TU

-

-

F 2 Push [F-2] to erase characters. Example display when inputting QSL TU DE JA3YUA TEST into MK3 Q

-

SL TU D

-

YUA TEST MK1 indication (default) MK2 indication (default) MK3 indication (default) CW CW CW CQ TEST C _ UR 5NN* B _ CFU TU _ Contest number counter is set by entering an asterisk (*). 35 DContest number set mode This menu is used to set the contest (serial) number and count up trigger, etc. Setting contents q Select CW mode with [MODE]. w Enter the memory keyer menu. Push [MODE] for 1 sec. to enter the memory keyer send menu. Push [DISPLAY] momentarily to enter the memory keyer menu. e Push [(F-2)001] to enter the contest number set mode. r Push [MENU] once or twice to select the desired set item.

[M-CH] or [Y]/[Z] can also be used. t Set the desired condition using the main dial. y Push [DISPLAY] twice to return to the memory keyer send menu. 01 NUM STYLE (Number style) This item sets the numbering system used for contest

(serial) numbers normal or morse cut numbers.

: Does not use morse cut number (default) n 190.Ano: Sets 1 as A, 9 as N and 0 as O. 190.Ant : Sets 1 as A, 9 as N and 0 as T. 90.no 90.nt

: Sets 9 as N and 0 as O.

: Sets 9 as N and 0 as T. 02 CONT UP TRIG (Count up trigger) This selects which of the three memory slots will have the contest serial number exchange. The count up trigger allows the serial number automatically incre-

mented after each complete serial number exchange is sent. 1 (MK1), 2 (MK2) and 3 (MK3) can be set. (default: 2) 03 PRESENT No. (Present number) This item shows the current number for the count up trigger channel set above. Rotate the tuning dial to change the number. RECEIVE AND TRANSMIT 4

[MODE] Main dial

[M-CH]

[MENU]

[F-2]

[DISPLAY]

[Y]

[Z]

4 CW 01 NUM STYLE CW 02 CNT UP TRIG CW 03 PRESENT No. 36 4 RECEIVE AND TRANSMIT DMemory keyer set mode This set mode is used to set the memory keyer repeat time and indication type of the messages. Setting contents q Select CW mode with [MODE]. w Enter the memory keyer menu. Push [MODE] for 1 sec. to enter the memory keyer send menu. Push [DISPLAY] momentarily to enter the memory keyer menu. e Push [(F-3)SET] to enter the memory keyer set mode. r Push [MENU] to select the desired set item.

[M-CH] or [Y]/[Z] can also be used. t Set the desired condition using the main dial. y Push [DISPLAY] twice to return to the memory keyer send menu. 01 REPEAT TIME (Repeat time) When sending CW using the repeat timer, this item sets the time between transmission. 1 to 60 sec. in 1 sec. steps can be selected. 02 MSG DISPLAY (Message display) This item sets the indication type of the messages

(pre-set characters). n 3

: Normal indication (default)

[(F-1)MK1], [(F-2)MK2], [(F-3)MK3]

: First three characters of the massages are in-

dicated. e.g. [(F-1)CQ ], [(F-2)UR ], [(F-3)CFM]

3.cn : First three characters of the massages and contest number are indicated. e.g. [(F-1)CQ ], [(F-2)001], [(F-3)CFM]

37

[MODE] Main dial

[Y]

[Z]

[M-CH]

[MENU]

[F-3]

[DISPLAY]

CW 01 REPEAT TIME CW 02 MSG DISPLAY RECEIVE AND TRANSMIT 4 Operating RTTY D Connections for RTTY (FSK) Rear panel

[ACC]

Rear panel view TU or TNC Personal computer 4 8 12 123 7 6 5 9 11 10 13 MSEND (orenge) GND (red) FSKK (black) SQL*1 (light green) AF out (light blue)

*1Connect SQL line when required. 4 Colors refer to connection to the supplied ACC cable. D RTTY (FSK) operation q Connect a terminal unit as at above. w Push [(Y)BAND]/[(Z)BAND] to select the desired band. e Push [MODE] momentarily to select RTTY mode. After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and SSB-D modes. r While the quick set mode item Q2 is selected in RTTY mode, rotate main dial to select RTTY or RTTY mode. Push [DISPLAY] for 1 sec. to enter the quick set mode. Push [MENU] one or more times to select Q2. Push [DISPLAY] momentarily to return to normal oper-

ating mode. t Rotate [AF] to set audio to a comfortable listening level. y Select the desired FSK tone/shift frequencies and keying polarity as at page 40. u Rotate the main dial to tune a desired signal. Use [(F-1)1/4] in the M4 display when critical setting is required. S-meter indicates received signal strength. If the received signal cannot be demodulated, try se-

lecting RTTY mode (or RTTY mode). i Transmit a SEND signal from your TNC. The TX indicator lights red. The Po meter indicates transmitted RTTY signal strength. o Operate the connected PC or TNC (TU) to trans-

mit RTTY (FSK) signals.

[AF]

[TX] indicator [MODE] Main dial

[Y]

[Z]

[F-1]

[DISPLAY]

[MENU]

[F-2]

RTTY or RTTY appears LSB USB CW RTTY AM WFM R S1 3 5 7 9 20 40 60dB VFO A PO CH M4 1/4 TON AGC 10 5 38 4 RECEIVE AND TRANSMIT D Convenient functions for receive Preamp and attenuator (p. 46) Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. Lights green when the preamp is set to ON. Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. Push [P.AMP/ATT] momentarily to turn the attenua-

tor OFF. Lights red when the attenuator is set to ON. Noise blanker (p. 48) While M3 is selected, push [(F-2)NB] to turn the noise blanker ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. NB appears when the noise blanker is set to ON. Push [(F-2)NB] for 1 sec. to enter the noise blanker set mode. AGC (auto gain control) (p. 48) While M4 is selected, push [(F-3)AGC] to select AGC fast and AGC slow. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. FAGC appears when the fast time constant is se-

lected. QUICK SET MODE D RTTY reverse mode Received characters are occasionally garbled when the receive signal is reversed between MARK and SPACE. This reversal can be caused by incorrect TNC connections, settings, commands, etc. To receive a reversed RTTY signal correctly, select RTTY (RTTY reverse) mode. q Select RTTY mode with [MODE]. w Push [DISPLAY] for 1 sec. to enter quick set mode. e Push [MENU] one or more times to select Q2 RTTY REV, then rotate the main dial to select RTTY and RTTY modes. Check the interference tone. rPush [DISPLAY] momentarily to exit quick set mode. IF shift (p. 47) Rotate [SHIFT] control. Noise reduction (p. 50) While S4 is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. NR appears when the noise reduction is set to ON. Auto notch lter (p. 50) While S4 is selected, push [(F-1)ANF] to turn the auto notch lter function ON and OFF. ANF appears when the noise reduction is set to ON. 14 function While M4 is selected, push [(F-1)1/4] to turn the 14 function ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4.

[MODE]

[MENU]

[DISPLAY]

Main dial Normal Space Mark 170 Hz 2125 Hz Reverse Space Mark 2125 Hz 170 Hz BFO BFO displayed freq. displayed freq. 39 D Presetting for RTTY Tone frequency q Push [MODE] momentarily to select RTTY mode. After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and SSB-D modes. w Enter the RTTY tone set mode. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. Push [(F-2)TON] for 1 sec. to enter the RTTY tone set mode (below). e Push [MENU] one or more times to select R1 RTTY TONE, then rotate the main dial to select the desired frequency. Shift frequency q Enter the RTTY tone set mode as same as above. w Push [MENU] one or more times to select R2 RTTY SHIFT, then rotate the main dial to select the desired shift frequency. RTTY keying q Enter the RTTY tone set mode as same as above. w Push [MENU] one or more times to select R3 RTTY KEYING; then rotate the main dial to se-

lect the desired keying polarity. RECEIVE AND TRANSMIT 4

[MODE] Main dial

[MENU]

[F-2]

[DISPLAY]

RTTY RTTY mark frequency is set to 2125 Hz. 2125, 1615 and 1275 Hz are available. R1 RTTY TONE RTTY R2 RTTY SHIFT RTTY shift frequency is set to 170 Hz. 170/200/425 Hz are available. 4 After presetting is nished, push [DISPLAY] momen-

tarily to return the normal operating mode. RTTY R3 RTTY KEYING RTTY keying is set to normal. normal :

key open=mark key close=space reverse:

key open=space key close=mark D RTTY tone set mode While M4 is selected in RTTY mode, push [(F-2)TON]

for 1 sec. to enter the RTTY tone set mode. R1 RTTY TONE This item selects the RTTY tone. RTTY tone is se-

lected between 1275, 1615 and 2125 Hz. R2 RTTY SHIFT This item adjusts the RTTY shift. There are 3 selec-

table values: 170, 200 and 425 Hz. R3 RTTY KEYING (RTTY only) This item adjusts the RTTY keying. Normal or reverse keying can be selected. RTTY RTTY RTTY The default is 2125 Hz. The default is 170 Hz. The default is n, normal.

: key open=mark Normal Reverse

: key open=space 40 4 RECEIVE AND TRANSMIT Operating AM q Push [(Y)BAND]/[(Z)BAND] to select the desired band. w Push [MODE] momentarily or push for 1 sec. to se-

lect AM mode. After FM or AM mode is selected, push [MODE] for 1 sec. to toggle between FM and AM modes. e Rotate [AF] control to set audio to a comfortable lis-

tening level. r Rotate the main dial to tune a desired signal. S-meter indicates received signal strength. The default tuning step for AM mode is 1 kHz; this can be changed using the tuning step program mode. (p.19) t Push [PTT] (microphone) to transmit. The TX indicator lights red. y Speak into the microphone at your normal voice level. Adjust MIC GAIN at this step, if necessary. (p. 26) u Release [PTT] (microphone) to return to receive. D Convenient functions for receive Preamp and attenuator (p. 46) Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. Lights green when the preamp is set to ON. Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. Push [P.AMP/ATT] momentarily to turn the attenua-

tor OFF. Lights red when the attenuator is set to ON. Noise blanker (p. 48) While M3 is selected, push [(F-2)NB] to turn the noise blanker ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. NB appears when the noise blanker is set to ON. Push [(F-2)NB] for 1 sec. to enter the noise blanker set mode. Initial set mode item 30 AM NB (p. 80) is must be set ON when noise blanker function is used in AM mode. (Default setting is ON.) IF shift (p. 47) Rotate [SHIFT] control. D Convenient functions for transmit Speech compressor (p. 54) While M4 is selected, push [(F-2)COM] to turn the speech compressor ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. COM appears when the speech compressor is set to ON. Push [(F-2)COM] for 1 sec. to enter the compression level set mode. 41

[AF]

[TX] indicator

[MODE]

[Y]

[Z]

Main dial AM appears LSB USB CW R RTTY AM WFM S1 3 5 7 9 20 40 60dB VFO A PO CH M1 SPL A/B XFC 10 5 AGC (auto gain control) (p. 48) While M4 is selected, push [(F-3)AGC] to select AGC fast and AGC slow. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. FAGC appears when the fast time constant is se-

lected. Noise reduction (p. 50) While S4 is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. NR appears when the noise reduction is set to ON. Auto notch lter (p. 50) While S4 is selected, push [(F-1)ANF] to turn the auto notch lter function ON and OFF. ANF appears when the noise reduction is set to ON. VOX (voice operated transmit) (p. 53) While M4 is selected, push [(F-1)VOX] to turn the VOX function ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. VOX appears when the VOX function is set to ON. Push [(F-1)VOX] for 1 sec. to enter the VOX set mode. Operating FM q Push [(Y)BAND]/[(Z)BAND] to select the desired band. w Push [MODE] momentarily or for 1 sec. to select FM mode. After FM or AM mode is selected, push [MODE] for 1 sec. to toggle between FM and AM modes. e Rotate [AF] control to set audio to a comfortable lis-

tening level. r Rotate the main dial to tune a desired signal. S-meter indicates received signal strength. The default tuning step for FM mode is 1 kHz; this can be changed using the tuning step program mode. (p.19) t Push [PTT] (microphone) to transmit. The TX indicator lights red. y Speak into the microphone at your normal voice level. Adjust MIC GAIN at this step, if necessary. (p. 26) u Release [PTT] (microphone) to return to receive. D Convenient functions for receive Preamp and attenuator (p. 46) Push [P.AMP/ATT] momentarily to set the preamp ON or OFF. Lights green when the preamp is set to ON. Push [P.AMP/ATT] for 1 sec. to set the attenuator ON. Push [P.AMP/ATT] momentarily to turn the attenua-

tor OFF. Lights red when the attenuator is set to ON. IF shift (p. 47) Rotate [SHIFT] control. D Convenient functions for transmit VOX (voice operated transmit) (p. 53) While M4 is selected, push [(F-1)VOX] to turn the VOX function ON and OFF. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. VOX appears when the VOX function is set to ON. Push [(F-1)VOX] for 1 sec. to enter the VOX set mode. RECEIVE AND TRANSMIT 4

[AF]

[TX] indicator

[MODE]

[Y]

[Z]

Main dial FM appears LSB USB CW R RTTY AM WFM S1 3 5 7 9 20 40 60dB VFO A PO CH M1 SPL A/B XFC 10 5 Noise reduction (p. 50) While S4 is selected, push [(F-2)NR] to turn the noise reduction ON and OFF. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. Push [(F-3)NRL] then rotate [M-CH] to adjust the noise reduction level. NR appears when the noise reduction is set to ON. Auto notch lter (p. 50) While S4 is selected, push [(F-1)ANF] to turn the auto notch lter function ON and OFF. ANF appears when the noise reduction is set to ON. 4 42 4 RECEIVE AND TRANSMIT D Tone squelch operation Tone squelch operation is a method of communica-

tions using selective calling. Only received signals having a matching tone will open the squelch. Before communicating using tone squelch, all members of your party must agree on the tone squelch frequency to use. q Push [MODE] one or more times to select FM mode. w Select M4. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. e Push [(F-2)TON] for 1 sec. to enter the FM tone set mode. Push [MENU] one or more times to select T2 TONE SQL. r Rotate the main dial to set the desired subaudible tone frequency. See left table for available tone frequencies. Push [DISPLAY] to exit the FM tone set mode. t Push [(F-2)TON] once or twice to turn the tone squelch function. TSQL appears. y Communicate in the usual manner. Push [PTT] to transmit; release to receive. D Tone scan operation By monitoring a signal that is being transmitted on a repeater input frequency, you can determine the tone frequency necessary to open a repeater. q During tone squelch or repeater operation (T or TSQL is displayed, select M4. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. w Push [(F-2)TON] for 1 sec. to enter the FM tone set mode. Push [MENU] one or more times to select T3 T-SQL SCN during tone squelch operation or T3 RPTR-T SCN during repeater operation. If tone squelch function or tone encoder has not been selected, this item does not appear. e Push [(F-3)SCN] to toggle the tone scan operation ON and OFF. While scanning, tone frequencies are displayed instead of the operating frequency. When a matched tone is detected, tone scan automati-

cally stops, the matched tone is displayed and the re-

peater tone squelch is automatically adjusted accordingly. tone) setting tone (or r Push [DISPLAY] to exit the FM tone set mode. 43

[MODE] Main dial

[MENU]

[F-2]

[DISPLAY]

FM T2 TONE SQL FM TSQL SPL S1 3 5 7 9 20 40 60dB VFO A PO 5 10 M4 VOX TON CH Available tone squelch frequencies 186.2 189.9 192.8 196.6 199.5 203.5 206.5 165.5 167.9 171.3 173.8 177.3 179.9 183.5 136.5 141.3 146.2 151.4 156.7 159.8 162.2 107.2 110.9 114.8 118.8 123.0 127.3 131.8 085.4 088.5 091.5 094.8 097.4 100.0 103.5 67.0 69.3 71.9 74.4 77.0 79.7 82.5

(Unit: Hz) 254.1 210.7 218.1 225.7 229.1 233.6 241.8 250.3 Main dial

[F-3]

[MENU]

[F-2]

[DISPLAY]

FM TSQL During tone squelch operation. S1 3 5 7 9 20 40 60dB PO 5 10 T3 T-SQL SCN FM T During repeater operation. S1 3 5 7 9 20 40 60dB PO 5 10 T3 RPTR-T SCN D FM tone set mode While M4 is selected in FM mode, push [(F-2)TON] for 1 sec. to enter the FM tone set mode. T1 RPTR TONE This item selects a subaudible tone for FM-T mode operation to access a repeater. There are 50 tones available from 67.0 Hz to 254.1 Hz (see table at right). RECEIVE AND TRANSMIT 4 FM The default is 88.5 Hz. Available subaudible tone frequencies (Unit: Hz) 254.1 67.0 69.3 71.9 74.4 77.0 79.7 82.5 085.4 088.5 091.5 094.8 097.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3 T2 TONE SQL This item sets a subaudible tone for tone squelch use. The same subaudible tone frequencies as for re-

peater operation are availablesee above T3 RPTR-T SCN (Repeater tone scan) During repeater operation, you can detect the tone frequency necessary to open a repeater. (see p. 45) FM FM-T The default is 88.5 Hz. 4 The default is 88.5 Hz. T3 T-SQL SCN (Tone squelch tone scan) During tone squelch operation, you can detect the tone frequency necessary to communicate using tone squelch. (see p. 43) FM-TSQL The default is 88.5 Hz. 44 4 RECEIVE AND TRANSMIT Repeater operation A repeater amplies received signals and re-transmits them at a different frequency. When using a repeater, the transmit frequency is shifted from the receive fre-

quency by an offset frequency. A repeater can be ac-

cessed using split frequency operation with the shift frequency set to the repeaters offset frequency. q Set the offset frequency and turn ON the quick split function in initial set mode in advance (pgs. 79, 80). If the quick split function is turned OFF, both transmit and receive must be set separately. w Push [MODE] one or more times to select FM mode, then set the receive frequency. e Select M1. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M1. r Push [(F-1)SPL] for 1 sec. to activate the split fre-

quency function with the pre-selected offset. t Select M4. Push [MENU] one or more times to select M4. y Push [(F-2)TON] for 1 sec. to enter the FM tone set mode. If FM mode has not been selected, this item does not appear. Push [MENU] one or more times to select T1 RPTR TONE. Rotate the main dial to set a subaudible tone frequency. Push [DISPLAY] to exit the FM tone set mode. u Push [(F-2)TON] to turn the tone encoder. T appears. i To check the repeater input frequency (direct sig-

nal from the other station), push and hold

[(F-3)XFC] in the M1 display. o To return to simplex operation, push [(F-1)SPL] in the M1 display. NOTE: The split function may not be turned off when you change the operating band, push

[(F-1)SPL] again to turn off the split function after you nish the repeater operation. CONVENIENT Each memory channel can store a tone frequency and an offset frequency, as well as the operating fre-

quency. Store repeater information into memory chan-

nels for quick and easy access to repeaters. 45

[MODE] Main dial

[F-1]

[F-3]

[MENU]

[F-2]

[DISPLAY]

the quick Turn split function ON.

(Initial set mode default is ON.) 24 QUICK SPLIT FM SPL S1 3 5 7 9 20 40 60dB VFO A PO CH M1 SPL A/B XFC 10 5 Set the tone fre-

quency. See below table for available fre-

quencies. FM T1 RPTR TONE FM T SPL S1 3 5 7 9 20 40 60dB VFO A PO 5 10 M4 VOX TON CH Available subaudible tone frequencies (Unit: Hz) 254.1 67.0 69.3 71.9 74.4 77.0 79.7 82.5 085.4 088.5 091.5 094.8 097.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3 FUNCTION FOR RECEIVE 5 Simple band scope This function allows you to visually sweep an area surrounding the set frequency for other signals. De-

tected signals are indicated graphically in the dot ma-

trix section of the display. NOTE: Use the attenuator or turn OFF the preamp when using the band scope on a band containing a lot of noise. q Set a mode and frequency. w Select G1. Push [DISPLAY] once or twice to select G. Push [MENU] one or more times to select G1. e Push [F-1] one or more times to select the desired steps. Each dot corresponds to a step for the indicated fre-

quency. 0.5k, 1k, 2k, 5k, 10k, 20k and 0.1M (100 kHz) can be set for the scope step. r Push [F-3] to start the sweep. ___ (below SWP) ashes while sweeping. The receive audio is muted while sweeping. t Rotate the main dial if you want to monitor the dis-

played signals. The sweep marker indicates the location of the dis-

played frequency in the sweep readout. If the displayed frequency is outside of the sweep read-

out (determined by the sweep width), the sweep marker ashes. y Push [F-2] to return the frequency to the start of a sweep. The sweep marker moves back to the center position. Preamp and attenuator The preamp amplifies received signals in the front end circuit to improve the S/N ratio and sensitivity. Turn this function ON when receiving weak signals. The attenuator prevents desired signals from distort-

ing when very strong signals are near the desired fre-

quency or when very strong electric fields, such as from broadcasting stations, are near your location. Push [P.AMP/ATT] momentarily to turn the preamp ON and OFF; push for 1 sec. to turn the attenuator ON. Lights green when the preamp is ON; lights red when the 20 dB attenuator is ON. Only one of these functions can be activated at a time. P.AMP/ATT Main dial

[F-1]

[F-3]

[MENU]

[F-2]

[DISPLAY]

SWP SWP Select sweep width

([F-1]) SWP ___ Start sweep

([F-3]) SWP sweep marker Sweep is finished

([F-3] again) SWP Move sweep marker

(main dial) SWP Returns to previous frequency ([F-2]) 1k 2k 2k 2k 2k 2k

[P.AMP/ATT]

P.AMP/ATT momentarily P.AMP/ATT Lights green while the preamp is activated;

lights red while the attenuator is activated. momentarily 1 sec. 4 5 46 5 FUNCTION FOR RECEIVE RIT function The RIT (Receive Incremental Tuning) function com-

pensates for off-frequencies of communicating sta-

tions. The function shifts the receive frequency up to 9.99 kHz in 10 Hz steps without moving the transmit frequency. 21 SUB DIAL item in initial set mode must be set to RIT mode in advance. (p. 79) q Push [RIT]. The [RIT] indicator lights red. w Rotate the [M-CH] control to cancel the off-fre-

quencies. The transmit frequency is not shifted. e To cancel the RIT function, push [RIT] again. The [RIT] switch indicator goes out. Calculate function The shift frequency of the RIT function can be added/subtracted to the displayed frequency. While the RIT indicator is lit, push and hold [RIT] for 1 sec. NOTE: The RIT function is not available in FM or AM modes regardless of the Initial Set mode set-

ting. (p. 79) IF shift function The IF shift function electronically changes the pass-

band frequency of the IF (intermediate frequency) and cuts out higher or lower frequency components of the IF to reject interference. The function shifts the IF frequency up to 1.2 kHz in 15 Hz steps in SSB/CW/RTTY modes and up to 250 Hz in 3 Hz steps in CW-/RTTY- modes. The IF shift is not available in FM and AM modes.

(: Narrow) q Adjust the [SHIFT] control for a minimum interfer-

ence signal level. The audio tone may be changed while the IF shift is in use. w Set the shift control to its center position when there is no interference. Graphic display The IF shift is displayed graphically (for about 1 sec.) each time the shift control is rotated. USB S1 3 5 7 9 20 40 60dB VFO A CH 47

[M-CH]

[RIT]

RIT SUB Indicator lights red while RIT function is activated. USB USB RIT SUB Push for 1 sec.

[SHIFT]

SHIFT M-CH SHIFT M-CH SHIFT M-CH SHIFT M-CH SHIFT Shifts low Center Shifts high FUNCTION FOR RECEIVE 5

[MENU]

[F-2]

[DISPLAY]

Main dial USB NB S1 3 5 7 9 20 40 60dB VFO A PO CH M3 FIL NB MET 10 5 Appears when the noise blanker is turned ON. Noise blanker The noise blanker reduces pulse-type noise such as that generated by automobile ignition systems. This function is not effective for FM mode or for non pulse-

type noise. If you dont want to use the noise blanker for AM communications, the 30 AM NB item in initial set mode must be turned OFF (ON is the default set-

tingp. 80). q Select M3. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. w Push [(F-2)NB] to toggle the noise blanker ON and OFF. NB appears when the noise blanker is turned ON. e Push [(F-2)NB] for 1 sec. to enter the noise blanker level set mode (below). r Rotate the main dial to set the noise blanker level. t Push [DISPLAY] to exit the noise blanker level set mode. D Noise blanker level set mode While M3 is selected in all modes, push [(F-2)NB] for 1 sec. to enter the noise blanker level set mode. N1 NB LEVEL This item adjusts the noise blanker level. The noise blanker level can be adjusted from 0 to 10. USB The default is 5. Although noise blanker level set mode is available in all modes, the noise blanker function is not effective for FM mode. AGC time constant The AGC (Automatic Gain Control) controls receiver gain to produce a constant audio output level even when the received signal strength is varied by fading, etc. Use AGC slow for normal phone operation; AGC fast for receiving data and searching for signals. AGC time constant cannot be changed in FM mode. q Select M4. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. w Push [(F-3)AGC] to toggle the AGC time constant between fast and slow. FAGC appears when the fast time constant is selected.

[F-3]

[MENU]

[DISPLAY]

USB S1 3 5 7 9 20 40 FAGC 60dB VFO A PO CH M4 VOX COM AGC 10 5 Appears when AGC is selected. fast 5 48 5 FUNCTION FOR RECEIVE Optional lter selection One optional lter can be installed in the IC-703. Narrow filters help reject interference from adjacent signals and obtain good selectivity. Wide lters provide improved audio for SSB operation when no interfering signals are present. Consult the table below to select a lter most suitable for your operating needs. Narrow lters for AM/FM modes are standard. FILTER PRESETTING:

After you install a lter (see p. 87 for installation), you must specify the installed lter in initial set mode (item 22 OPT. FIL ; see p. 79). FILTER ON/OFF:

q Select M3. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. w Push [(F-1)FIL] momentarily to select the narrow lter; push for 1 sec. to select the wide lter. appears when the narrow filter is selected; ap-

pears when the wide lter is selected. Filter variations NOTE: When selecting the narrow lter (or wide l-

ter), the graphic passband is changed. (see dia-

gram below) wide is selected Normal operation narrow is selected

[F-1]

[MENU]

[DISPLAY]

Name FL-53A*

FL-52A*

FL-222*

FL-65 FL-96**

FL-257*

Mode CW, RTTY CW, RTTY Bandwidth 250 Hz/6 dB 500 Hz/6 dB SSB, CW, RTTY 1.8 kHz/6 dB SSB, CW, RTTY 2.3 kHz/6 dB SSB, CW, RTTY 2.8 kHz/6 dB SSB, CW, RTTY 3.3 kHz/6 dB

*Optional lter.

**Although the FL-96 is not listed on the option list, IC-703 would take FL-96 as well as other optional lter. Optional lter installation and selection tables SSB, CW, RTTY Bandwidth Filter No optional lter FL-52A FL-53A FL-96 FL-222 FL-257 49 Narrow Medium Wide FL-65 (2.3 k) FL-52A (500) FL-53A (250) FL222 (1.8 k) FL-65 (2.3 k) FL-65 (2.3 k) FL-65 (2.3 k) FL-65 (2.3 k) FL-65 (2.3 k) FL-96 (2.8 k) FL-257 (3.3 k) AM FM Normal Narrow Normal Narrow CFWS455G (8 k) FL-65 (2.4 k) Through (15 k) CFWS455G (8 k) INITIAL SET MODE Peak meter hold The peak meter hold function freezes the highest dis-

played bar segment in any meter function for about 0.5 sec. so that you can more easily read the meter. This function can be turned ON and OFF in initial set mode (item 23 PEAK HOLD ; see p. 79). FUNCTION FOR RECEIVE 5

[EXAMPLE]:

S1 3 5 7 9 20 40 60dB S1 3 5 7 9 20 40 60dB Initial reception of a signal results in an S-meter reading of 40 dB. The highest indica-

ted bar remains dis-

played for about 0.5 sec. even when the signal strength de-

creases. DSP Functions (may require an optional unit depending on versionsee p. 92) D ANF (Automatic Notch Filter) function This function automatically attenuates beat tones, tuning signals, etc., even if they are moving. The au-

tomatic notch filter functions in SSB, FM and AM modes. q Select S4 (DSP menu). Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. w Push [(F-1)ANF] to toggle the automatic notch l-

ter ON and OFF. DSP and ANF appear when the function is ON.

[F-1]

[MENU]

[DISPLAY]

USB DSP ANFANF S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH S4 ANF NR NRL 10 5 D NR (Noise Reduction) function This function reduces noise components and picks out desired signals which are buried in noise. The re-

ceived AF signals are converted to digital signals and then the desired signals are separated from the noise. The noise reduction function is available for all oper-

ating modes. q Select S4 (DSP menu). Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S4. w Push [(F-2)NR] to toggle the noise reduction func-

tion ON and OFF. DSP and NR appear when the function is ON. e Push [(F-3)NRL] to toggle the noise reduction level indication ON and OFF. r Rotate the [M-CH] control to set the noise reduc-

tion level. Set the control for maximum readability. Deep rotation results in audio signal masking or distortion.

[MENU]

[F-3]

[M-CH]

[F-2]

[DISPLAY]

USB DSP NR S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH S4 ANF NR NRL 10 5 USB DSP NR S1 3 5 7 9 20 40 60dB VFO A BLANK PO CH S4 LEVEL 4 NRL 10 5 5 50 6 FUNCTION FOR TRANSMIT Split frequency operation Split frequency operation allows you to transmit and receive on two different frequencies. Split frequency operation uses 2 frequencies, one in VFO A and the other in VFO B. Following is an example of setting 7.057 MHz, CW mode in VFO A (for receiving) and 7.025 MHz, CW mode in VFO B (for transmitting).

[F-1]

[MENU]

[F-2]

[F-3]

[DISPLAY] Main dial q Select VFO A and set the frequency to 7.057 CW SPL S1 3 5 7 9 20 40 60dB VFO A PO CH M1 SPL A/B XFC 10 5 CW SPL S1 3 5 7 9 20 40 60dB VFO A PO CH M1 SPL A/B XFC 10 5 CW SPL S1 3 5 7 9 20 40 60dB PO CH M1 SPL A/B XFC 10 5 VFO B MHz/CW.

[(F-2)A/B] is available when M1 appears.

[(F-3)V/M] is available when M2 appears. w Push or push and hold [(F-1)SPL] in the M1 dis-

play. Push [SPL]: activates split only. Push and hold [SPL]: activates the quick split next page. e To change the receive frequency, rotate the main dial; to change the transmit frequency, rotate the main dial while pushing [(F-3)XFC]. The transmit frequency can be monitored while push-

ing [(F-3)XFC]. Split operation is now set for receive on 7.057 MHz/CW and transmit on 7.025 MHz/CW. To exchange the transmit and receive frequencies, push [(F-2)A/B] in M1. CONVENIENT The G3 display conveniently shows the transmit fre-

quency during split frequency operation and pushing

[(F-3)] allows you to change the transmit frequency. Split lock function The split lock function is convenient for changing only the transmit frequency. Otherwise, accidentally re-

leasing the [(F-3)XFC] switch while rotating the main dial changes the receive frequency. The split locks ef-

fectiveness can be selected in initial set mode (item 25 SPLIT LOCK) for both receive and transmit frequencies; or only the receive frequency. (p. 80) 51 D Quick split function In M1, when you push [(F-1)SPL] for 1 sec., split fre-

quency operation is turned ON and VFO B is auto-

matically changed according to the plus/minus pre-programmed shift frequency set in initial set mode

(or equalized when 0 kHz is programmed as the split shift frequency). This shortens the time needed to start split frequency operationgreat for DXing. The quick split function is ON by default. If desired, it can be turned OFF in initial set mode (p. 79). In this case, pushing [(F-1)SPL] for 1 sec. has the same ef-

fect as pushing [(F-1)SPL] momentarily as in normal split operation. PROGRAMMING SPLIT SHIFT FREQUENCY (p.80) q Push [POWER] to turn power OFF. w While pushing [LOCK], push [POWER] to turn power ON and enter initial set mode. e Select 26 SPL OFFSET using [MENU], [M-

CH] or the [Y]/[Z] keys, then rotate the main dial to select the desired split offset. The split offset can be selected from 9.999 MHz to

+9.999 MHz. 26 SPL OFFSET Meter selection The bar meter in the function display acts as an S-meter for relative signal strength during receiving and can be selected for one of three types during transmitting. q Select M3. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3. w Push [(F-3)MET] one or more times to select the desired meter function. The display indication changes as in the table at right. FUNCTION FOR TRANSMIT 6

[F-1]

[MENU]

[DISPLAY]

SPL Push F-1 for 1 sec. VFO A SPL No shift frequency is programmed. VFO A SPL VFO A

+10 kHz is programmed as a shift frequency. SPL SPL VFO B VFO B 6

[F-3]

[MENU]

[DISPLAY]

DISPLAY INDICATION MEASUREMENT Po Indicates the relative RF output power. ALC Indicates the ALC level. When the meter movement shows the input signal level exceeds the allowable level, the ALC limits the RF power. In such cases, reduce the microphone gain (see above). SWR Indicates the SWR over the transmis-

sion line. 52 6 FUNCTION FOR TRANSMIT VOX operation The VOX (Voice-operated Transmission) function tog-

gles between transmit and receive with your voice. This function provides an opportunity to input log en-

tries into your computer, etc., while operating. q Select M4. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M4. w Push [(F-1)VOX] to toggle the VOX function ON and OFF. VOX appears when the function is ON. e Push [(F-1)VOX] for 1 sec. to enter the VOX set mode (below), then set the VOX delay, VOX gain and ANTI-VOX if desired. r Select VOX DELAY in VOX set mode. Push [MENU] one or more times to select V1. While speaking into the microphone, adjust VOX DELAY as desired. t Select VOX GAIN in VOX set mode. Push [MENU] one or more times to select V2. While speaking into the microphone, adjust VOX GAIN until the transceiver is transmitting. y Select ANTI VOX in VOX set mode. Push [MENU] one or more times to select V3. If the receive audio from the speaker toggles the trans-

ceiver to transmit during receive, adjust the ANTI-VOX to the point where it has no effect. u Push [DISPLAY] to exit VOX set mode. D VOX set mode While M4 is selected in SSB/AM/FM modes, push

[(F-1)VOX] for 1 sec. to enter the VOX set mode. V1 VOX DELAY This item adjusts the VOX (Voice-activated Transmit) delay time. The delay time can be adjusted from 0 to 2 sec. in 0.1 sec. steps. V2 VOX GAIN This item adjusts the VOX gain for the VOX (voice ac-

tivated transmit) function. V3 ANTI VOX This item adjusts the ANTI-VOX gain for the VOX

(voice activated transmit) function. USB USB USB 53

[F-1]

[MENU]

[DISPLAY]

Main dail LSB USB CW R RTTY AM WFM VOX 7 5 3 9 S1 COM 20 40 60dB VFO A PO CH M4 VOX COM AGC 10 5 The default is 1.0 seconds. The default is 5. The default is 5. FUNCTION FOR TRANSMIT 6

[MODE]

[MENU]

[F-2]

[F-3]

[DISPLAY]

Main dail LSB USB CW R RTTY AM WFM VOX 7 5 3 9 S1 COM 20 40 60dB VFO A PO CH M4 VOX COM AGC 10 5 ALC ALC zone Adjust COMP LEVEL so that the ALC meter reads within the ALC zone. NOTE: When the ALC meter peaks above the ALC zone, your transmitted voice may be distorted. 6 Speech compressor The IC-703 has a built-in, low distortion speech com-

pressor circuit. This circuit increases your average talk power in SSB mode and is especially useful for DXing when the receiving station is having difculty copying your signal. q Select USB or LSB mode. w Select the mic gain display in quick set mode. Push [DISPLAY] for 1 sec. Push [MENU] one or more times to select Q2 MIC GAIN. The ALC meter is selected automatically when operat-

ing in SSB mode. e Adjust the mic gain. While transmitting at your normal voice level, the ALC meter should read at about the middle of the ALC zone. Be sure the mic gain is in the range of 2 to 5. r Select the ALC meter. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M3, then push [(F-3)MET] one or more times to select ALC. t Push [MENU] one or more times to select M4. y Push [(F-2)COM] to turn the speech compressor function ON. COM appears. u Push [(F-2)COM] for 1 sec. to enter the compres-

sion level set mode (below). i Rotate the main dial to set the speech compression level. D Compression level set mode While M4 is selected in SSB/AM modes, push

[(F-2)COM] for 1 sec. to enter the compression level set mode. C1 COMP LEVEL This item adjusts the speech compression level. The speech compression level can be adjusted from 0 to 10. USB The default is 5. 54 6 FUNCTION FOR TRANSMIT SWR D Measuring SWR The IC-703 has a built-in circuit for measuring an-

tenna SWRno external equipment or special ad-

justments are necessary. The IC-703 can measure SWR in 2 ways:

(A) Spot measurement; or (B) Plot measurement.

(A) Spot measurement q Conrm that the output power is over 5 W. w Push [MENU] one or more times to select M3. e Push [(F-3)MET] to select the SWR meter. r Push [MODE] one or more times to select CW or RTTY operation. Key down or push [PTT] to transmit; then read the ac-

tual SWR from the meter:

1.5 well matched antenna

> 1.5 check antenna or cable connection, etc.

(B) Plot measurement Plot measurement allows you to measure the SWR over an entire band. q Conrm that the output power is over 5 W. w Push [DISPLAY] once or twice to select G. e Push [MENU] one or more times to select G2. r Set the center frequency for the SWR to be mea-

sured. t Push and hold [(F-1)10k] one or more times to se-

lect the desired frequency pitch. y Push and hold [(F-2)] one or more times to select the desired step. u After selecting the desired pitch and step, push

[(F-3)STR] to measure the SWR. RTTY mode is selected automatically. i Push and hold [PTT] to display the SWR in a bar graph readout. o When [PTT] is released, the frequency marker and frequency indication move to the next frequency to be measured. RTTY S1 3 5 7 9 20 40 60dB VFO A BLANK PO 5 G2 50k 10 CH STR 4.0 3.5 3.0 2.5 2.0 1.5 1.0 The antenna is well matched in this range

!0 Repeat steps i and o to measure SWR over the entire frequency range.

!1 When the measured SWR is less than 1.5, the an-

tenna is well matched. 55

[MODE]

[F-3]

[MENU]

[DISPLAY]

CW S1 3 5 7 9 20 BLANK VFO A 40 60dB SWR 1 1.5 2 CH M3 FIL NB MET 3 SWR 1 1.5 2 The best match is in this range. 3

[F-1]

[F-3]

[MENU]

[F-2]

[DISPLAY]

G2 10k STR Frequency span Step bar indication Frequency indication mark Measure start indicator Span Push [F-1] for 1 sec. to change the se-

lected span. Step bar Push [F-2] to change the step bar (3, 5, Marker Start 7 or 9 steps are available. Indicates the currently active step bar. Flashes while the SWR is being mea-

sured. MEMORY OPERATION 7 NOTE: During split frequency operation, pro-

grammed memory contents can be called up to the SUB readout (dot matrix portion of the display). Memory channels The transceiver has 105 memory channels (includes 6 scan edge channels). Memory mode is useful for quickly changing to often-used frequencies. All 105 memory channels are tuneable which means the programmed frequency can be tuned temporarily with the main dial, etc., in memory mode. MEMORY CHANNEL MEMORY CHANNEL NUMBER Regular

(split memory) 199 CAPABILITY TRANSFER TO VFO OVER-

WRITING CLEAR Independent transmit and receive frequencies and one mode in each memory channel. In addition, tone frequencies can also be stored for repeater use. Yes Yes Yes Scan edges 1A3B

(3 pairs) One frequency and one mode in each memory channel as scan edges for programmed scan. Yes Yes No Memory channel selection q Select M2 functions. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M2. w Push [(F-3)V/M] to select memory mode. e Rotate [M-CH] to select the desired memory chan-

nel. All memory channels including blank channels can be selected.

[UP]/[DN] on the microphone changes the frequency. r To return to VFO mode, push [(F-3)V/M] again.

[M-CH]

[MENU]

[DISPLAY]

[F-3]

[EXAMPLE]: Selecting memory channel 17. CW USB USB VFO A CH MEMO CH SPLIT MEMO CH V/M F-3 M-CH SHIFT 6 7 56 7 MEMORY OPERATION Memory programming Programming in VFO mode q Select M2 functions. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M2. w Set the desired frequency and operating mode in VFO mode. If you want to program the split frequency function, pro-

gram both receive and transmit frequencies into VFO A and B, then turn ON the split function. If you want to program a repeater function, set a tone frequency (pgs. 44, 45) in addition to the receive/trans-

mit frequencies. e Rotate [M-CH] to select the desired memory chan-

nel. Select memory mode to conrm the contents, if desired.

} appears if the selected memory channel is a blank channel (and does not have contents). r Push [(F-1)MW] for 1 sec. to program the displayed frequency and operating mode into the memory channel. To check the programmed contents, push [(F-3)V/M]

to select memory mode. Programming in memory mode q Select M2 functions. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M2. w Set the desired frequency and operating mode. e Push [(F-3)V/M] to select memory mode, then se-

lect the desired memory channel with [M-CH]. Push [Y]/[Z] when you want to program blank chan-

nels. r Push [(F-1)MW] for 1 sec. to program the displayed frequency and operating mode into the memory channel.

[Y]

[Z]

[MENU]

[F-3]

[M-CH]

[F-1]

[DISPLAY]

57

[MENU]

[F-3]

[M-CH]

[F-1]

[DISPLAY]

[EXAMPLE]: Programming 7.088 MHz/LSB into ch 12. CW LSB LSB LSB TS VFO A CH MODE VFO A M-CH SHIFT CH CH CH VFO A BLANK VFO A SPLIT Push for 1 sec. MW F-1

[EXAMPLE]: Programming 21.280 MHz/USB into ch 18. USB M-CH SHIFT MEMO CH CH CW USB USB MEMO CH MEMO CH MEMO CH TS MODE SPLIT Push for 1 sec. MW F-1 Memory clearing Any unnecessary memory channels can be cleared. The cleared memory channels become blank chan-

nels. q Select M2 functions. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M2. w Push [(F-3)V/M] to select memory mode. e Rotate [M-CH] to select a memory channel to be cleared. r Push [(F-2)MCL] for 1 sec. to clear the contents. The programmed frequency and operating mode dis-

appear and } appears. t To return to VFO mode, push [(F-3)V/M] again. Frequency transferring The frequency and operating mode can be trans-

ferred from memory mode to VFO mode. q Select M2 functions. Push [DISPLAY] once or twice to select M. Push [MENU] one or more times to select M2. w Select VFO mode with [(F-3)V/M]. e Select a memory channel with [M-CH]. Select memory mode to conrm the memory channels contents, if desired; then return to VFO mode.

} appears if the selected memory channel is a blank channel (and does not have contents). In this case transferring is not possible. r Push [(F-3)V/M] for 1 sec. to transfer the frequency and operating mode. Transferred frequency and operating mode appear in the display. MEMORY OPERATION 7

[M-CH]

[MENU]

[F-2]

[DISPLAY]

[F-3]

USB SPLIT MCL F-2 Push for 1 sec. MEMO CH BLANK MEMO CH

[M-CH]

[MENU]

[DISPLAY]

[F-3]

[EXAMPLE]: Transferring contents of memory 16. Operating frequency:

Contents of memory 16: 14.020 MHz/CW 21.320 MHz/USB (VFO) USB USB CW VFO A VFO A VFO A CH CH CH M-CH SHIFT SPLIT V/M F-3 Push for 1 sec. 7 58 7 MEMORY OPERATION Memory names All memory channels (including scan edges) can be tagged with alphanumeric names of up to 9 charac-

ters each. All common keyboard characters (ASCII characters 33 to 126) can be used, including numerals and punc-

tuation marks. Calling up memory names q Select the G4 display. Push [DISPLAY] once or twice to select G. Push [MENU] one or more times to select G4. w Select a memory channel with [M-CH]. Editing (programming) memory names q Call up the desired memory (channel) name as above. w Push [(F-3)] to enter memory name edit mode.

[DEL] appears briey, then a cursor blinking under the rst character position. e Rotate the main dial to select the desired charac-

ter, then advance the cursor position. Pushing [(F-3)] moves the cursor to the right; [(F-1)]

moves the cursor to the left. Pushing [(F-2)] deletes the character. r Repeat this procedure until all desired characters have been selected. t Push [(MENU)] to exit memory name edit mode. The G4 display re-appears and the programmed mem-

ory name is displayed. 59

[F-1]

[F-3]

[M-CH]

[MANU]

[F-2]

[DISPLAY]

Main dial G4 memory name G4

[DEL]

R Re Repeater G4 Repeater F-3 F-3 F-3 MENU Memo pads The transceiver has a memo pad function to store fre-

quency and operating mode for easy write and recall. The memo pads are separate from memory channels. The default number of memo pads is 5, however, this can be increased to 10 in initial set mode if desired

(p. 80). Writing frequencies and operating modes into memo pads q Select the S1 display. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S1. w Push [(F-2)MPW] to program the frequency into a memo pad. When you write a 6th frequency and operating mode, the oldest written frequency and operating mode are automatically erased to make room for the new set-

tings. NOTE: Each memo pad must have its own unique combination of frequency and operating mode;

memo pads having identical settings cannot be written. Calling up a frequency from a memo pad You can simply call up the desired frequency and op-

erating mode of a memo pad by pushing [(F-3)MPR]

in the S1 display. Make sure S1 is selected in advance. Both VFO and memory modes can be use. The frequency and operating mode are called up, starting from the most recently written. When you call up a frequency and an operating mode from memo pads with [(F-3)MPR], the previously dis-

played frequency and operating mode are automati-

cally stored in a temporary pad. The frequency and operating mode in the temporary pad can be recalled by pushing [(F-3)MPR] one or more times. NOTE: If you change the frequency or operating mode called up from a memo pad, the frequency and operating mode in the temporary pad are erased. MEMORY OPERATION 7 Memo pads are convenient when you want to memo-

rize a frequency and operating mode temporarily, such as when you nd a DX station in a pile-up or when a station is busy for a long time and you want to tem-

porarily search for other stations. Use the transceivers memo pads instead of relying on hastily scribbled notes that are easily misplaced.

[F-3]

[MANU]

[F-2]

[DISPLAY]

Displayed frequency and mode USB Push MPW F-2 USB USB USB USB USB MP5 Newest MP4 MP3 MP2 MP1 Oldest The oldest written frequency and mode are erased. USB VFO or MEMORY mode MPR F-3 MPR F-3 MEMO PADS USB USB USB USB USB MP5 MP4 MP3 MP2 MP1 7 60 8 SCAN OPERATION Scan types PROGRAMMED SCAN Repeatedly scans between two scan edge frequencies

(scan edge memory channels 1A and 1B). PRIORITY WATCH Checks for signals on a memory while operating on a VFO frequency. Scan edge 1A or 1B Scan Jump Scan edge 1B or 1A VFO frequency Memory channel This scan operates in VFO mode. This scan operates in VFO mode. MEMORY SCAN Repeatedly scans all programmed memory channels. SELECTED MEMORY SCAN Repeatedly scans all selected memory channels. S (select) BLANK S (select) BLANK Mch 2 Mch 3 Mch 4 Mch 2 Mch 3 Mch 4 Mch 1 S (select) S (select) Mch 5 Mch 1 S (select) S (select) Mch 5 Mch 99 Mch 7 Mch 6 S (select) S (select) Mch 99 Mch 7 Mch 6 S (select) S (select) This scan operates in memory mode. This scan operates in memory mode. Preparation Channels For programmed scan: Program scan edge frequen-

cies into scan edge memory channels 1A and 1B.

(p. 57) For memory scan: Program 2 or more memory chan-

nels except scan edge memory channels. For memory select scan: Designate 2 or more mem-

ory channels as select memory channelsselect a memory channel, then push [(F-2)SEL] in the S2 dis-

play (memory mode) to designate the channel as a se-

lect memory channel. For priority watch: Program 1 memory channel to be watched. Scan resume ON/OFF You can select the scan to resume or cancel when de-

tecting a signal, in initial set mode, item 27 SCAN RESUME. Scan resume ON/OFF must be set before operating a scan. See p. 80 for ON/OFF setting and scan resume condition details. 61 Scan speed Scan speed can be selected from 2 levels, high or low, in initial set mode. See p. 80 for details. Squelch condition SCAN STARTS WITH SQUELCH OPEN SQUELCH CLOSED PROGRAMMED SCAN MEMORY SCANS PRIORITY WATCH Scan pauses on each channel when the scan resume is ON;

not applicable when OFF. The scan continues until it is stopped man-

ually, and does not pause even if it de-

tects signals. This is not applicable when the scan re-

sume is OFF and a programmable step

(more than 1 kHz) is selected. Scan stops when detecting a signal. If you set scan resume ON in initial set mode, the scan pauses for 10 sec. when detecting a signal, then resumes. When a signal disap-

pears while scan is paused, scan resumes 2 sec. later. Programmed scan operation q Select VFO mode. w Select the desired operating mode. The operating mode can also be changed while scan-

ning. e Set [SQL] open or closed. See page a left for squelch condition. r Select S2. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S2. t Push [(F-1)SCN] to start the scan. Decimal point blinks while scanning. y When the scan detects a signal, the scan turns OFF, pauses or ignores it depending on the re-

sume setting and the squelch condition. During scan [TS] can be used only when resume is ON. u To cancel the scan push [(F-1)SCN]. NOTE: If the same frequencies are programmed into the scan edge memory channels 1A and 1B, programmed scan does not start. Memory scan operation q Select memory mode. w Close the squelch with [SQL]. e Select S2. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S2. r Push [(F-1)SCN] to start the scan. Decimal point blinks while scanning. t When the scan detects a signal, the scan stops or pauses depending on the resume setting. y To cancel the scan push [(F-1)SCN]. NOTE: Two or more memory channels must be programmed for memory scan to start. SCAN OPERATION 8

[F-1]

[SQL]

[MANU]

[DISPLAY]

USB S1 3 5 7 9 20 40 60dB VFO A PO CH S2 SCN PRI V/M 10 5 Select VFO mode F-1 then push [(F-1)SCN]

[F-1]

[SQL]

[MANU]

[DISPLAY]

USB S1 3 5 7 9 20 40 60dB PO CH S2 SCN SEL V/M MEMO 10 5 Select memory mode F-1 then push [(F-1)SCN]

8 62 8 SCAN OPERATION Select memory scan operation q Select memory mode. w Close the squelch with [SQL]. e Select S2. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S2. r Push [(F-1)SCN] to start the memory scan. Decimal point blinks while scanning. t Push [(F-2)SEL] to change the memory scan to se-

lect memory scan. Push [(F-2)SEL] for 2 sec. to clear all select memory channels. y When the scan detects a signal, the scan stops or pauses depending on the resume setting. u To cancel the scan push [(F-1)SCN]. NOTE: Two or more memory channels must be designated as select memory channels for select memory scan to start (see p. 61). Priority watch q Select VFO mode, then set a frequency. w Close the squelch with [SQL]. e Set the desired memory channel as the watching channel. r Select S2. Push [DISPLAY] once or twice to select S. Push [MENU] one or more times to select S2. t Push [(F-2)PRI] to start the priority watch. Decimal point blinks while scanning. y When the scan detects a signal, the scan pauses for 10 sec. or until the signal disappears, depend-

ing on the resume setting. u To cancel the scan push [(F-2)PRI]. NOTE: The paused condition when detecting a sig-

nal differs depending on the scan resume condi-

tion. (p 80) resume on: pauses for 10 sec. resume off: pauses until the signal disappears. 63

[F-1]

[SQL]

[MANU]

[F-2]

[DISPLAY]

USB S1 3 5 7 9 20 40 60dB PO S CH S2 SCN SEL V/M MEMO 10 5 Select memory mode Designate S. F-1 F-2 Push [(F-1)SCN], then [(F-2)SEL].

[SQL]

[MANU]

[F-2]

[DISPLAY]

USB S1 3 5 7 9 20 40 60dB VFO A PO CH S2 SCN PRI V/M 10 5 Select VFO mode Select watching channel F-2 Push [(F-2)PRI]. ANTENNA TUNER OPERATION 9 Antenna tuner operation D Internal antenna tuner The internal automatic antenna tuner matches the transceiver to the connected antenna automatically. Once the tuner matches an antenna, the latching relays combination are memorized as a preset point for each frequency range (100 kHz steps). Therefore, when you change the frequency range, the latching relays are au-

tomatically preset to the memorized combination. D Tuner operation Push [TUNER] to turn the internal antenna tuner ON. The antenna is tuned automatically when the antenna SWR is higher than 1.5:1. When the tuner is ON, the TUNER indicator lights red. MANUAL TUNING Push [TUNER] for 1 sec., to start manual tuning. A side tone is emitted and TUNER indicator blinks while tuning. If the tuner cannot reduce the SWR to less than 1.5:1 after 20 sec. of tuning, the TUNER indicator goes out. PTT TUNER START The tuner is always tuned when the PTT is pushed after the frequency is changed (more than 1% from last-tuned frequency). This function removes the push and hold [TUNER] operation and activates for the rst transmission on a new frequency. This function can be turned ON in initial set mode

(p. 81). TUNER RESET

[POWER]

[Y]

[Z]

q Make sure the transceiver power is OFF. w While pushing [Y] and [Z], push [POWER] to turn power ON. CLEAR ? OK appears as shown below. e Rotate main dial to select tuner reset. CLEAR ? OK F 3 r Then Push [F-3] for 1 sec to start tuner resetting. The memorized tuner settings are reset. CAUTION: NEVER transmit with the tuner ON when no antenna is connected. This will damage the transceiver. Be careful of the antenna selection.

[TUNER]

TUNER Lights to indicate internal tuner is activated. NOTES:

The internal antenna tuner can tune the HF to 50 MHz bands. NEVER transmit without an antenna properly connected to antenna port in use. If the SWR is higher than about 1.5:1 when tuning above 100 kHz on an antennas preset point, push

[TUNER] for 1 sec. to start manual tuning. When strong impact is applied, the internal tuner may not work properly caused by the latching relay is off po-

sition. In this case, push [POWER] momentarily to reset the all latching relays while transceiver power is ON. 8 9 DIf the tuner cannot tune the antenna Check the following and try again:

the antenna connection and feedline. the unaltered antenna SWR. (Less than 3:1 for HF bands;

Less than 2.5:1 for 50 MHz band) the power source voltage/capacity. If the tuner cannot reduce the SWR to less than 1.5:1 after checking the above, perform the follow-

ing:

repeat manual tuning several times. tune with a 50 dummy load and re-tune the antenna. turn power OFF and ON. adjust the antenna cable length.

(This is effective for higher frequencies in some cases.) Some antennas, especially for low bands, have a nar-

row bandwidth. These antennas may not be tuned at the edge of their bandwidth, therefore, tune such an antenna as follows:

64 9 ANTENNA TUNER OPERATION D Optional external tuner operation The IC-703 automatically detects and selects an optional external tuner (AT-180/AH-4) when connected. In this case, the internal tuner switches to the through function. NOTE: When the connected power supply voltage is lower than 11.0 V, the transceiver automatically switches to the battery operating mode (power sav-

ing mode). In this case, the transceiver can not drive an external antenna tuner. NOTE: When connecting the optional antenna tuner AT-180, the IC-703s output power must be set max-

imum (10 W) both in quick set mode and initial set mode. Otherwise, the AT-180 may not be tuned cor-

rectly.

(AT-180s minimum operating input power is 8 W.) D Optional AT-180 AUTOMATIC ANTENNA TUNER operation The AT-180 automatic antenna tuner matches the IC-

703 to the connected antenna automatically. Once the tuner matches an antenna, the variable capacitor an-

gles are memorized as a preset point for each fre-

quency range (100 kHz steps). Therefore, when you change the frequency range, the variable capacitors are automatically preset to the memorized point. MANUAL TUNING During SSB operation on HF bands at low voice lev-

els, the AT-180 may not be tuned correctly. In such cases, manual tuning is helpful. Push [TUNER] for 1 sec. to start manual tuning. CW mode is selected, a side tone is emitted, and the

[TUNER] light ashes; then, the previous mode is selected. CAUTION: NEVER transmit with the tuner ON when no antenna is connected. This will damage the transceiver. Be careful of the antenna selection. The AT-180 can match both HF and 50 MHz bands. However, operation is different for the HF and 50 MHz bands. TUNER OPERATION For the HF band:

Push [TUNER] to turn the tuner ON. The antenna is tuned automatically during transmission when the an-

tenna SWR is higher than 1.5:1. When the tuner is OFF, the [TUNER] light goes out. TUNER

[TUNER]

Lights to indicate AT-180 is turned ON. For the 50 MHz band:

Push [TUNER] for 1 sec. to tune the antenna. If the

[TUNER] light ashes slowly while transmitting, push and hold [TUNER] for 1 sec. again to re-tune the an-

tenna. TUNER

[TUNER]

Flashes to indicate re-tuning is necessary. 65

[TUNER]

Push and hold for 1 sec. to start manual tuning. If the tuner cannot reduce the SWR to less than 1.5:1 after 20 sec. of tuning, the [TUNER] light goes out. In this case, check the following:

the antenna connection and feedline the antenna SWR (p. 55; meter function) Through inhibit (HF bands only) The AT-180 has a through inhibit condition. When se-

lecting this condition, the tuner can be used at poor SWRs. In this case, automatic tuning in the HF bands activates only when exceeding SWR 3:1. Therefore, manual tuning is necessary each time you change the frequency. Although termed through inhibit, the tuner will be through if the SWR is higher than 3:1 after tuning. CONVENIENT Tuner sensitive condition (HF bands only) If you require critical tuning at any time during trans-

mission, select the tuner sensitive condition. See p. 81 for selection. Automatic tuner start (HF bands only) If you want to turn OFF the tuner under conditions of VSWR 1.5:1 or less, use automatic tuner on and turn the tuner OFF. See p. 81 for turning the function ON and OFF. ANTENNA TUNER OPERATION 9 D Optional AH-4 AUTOMATIC ANTENNA TUNER operation The AH-4 matches the IC-703 to a long wire antenna more than 7 m/23 ft long (3.5 MHz and above). See p. 16 for connection. See the AH-4 instruction manual for AH-4 installation and antenna connection details. AH-4 operation Tuning is required for each frequency. Be sure to re-tune the antenna before transmitting when you change the frequencyeven slightly. AH-4 setting example:

For mobile operation Optional AH-2b antenna element q Set the desired frequency in an HF band. The AH-4 will not operate on frequencies outside of ham bands. USB For outdoor operation Long wire w Push [TUNER] for 1 sec. The [TUNER] light ashes and CW appears while tun-

ing. RDANGER!: HIGH VOLTAGE!

NEVER touch the antenna element while tuning or transmitting.

[TUNER]

Push [TUNER] for 1 sec. CW NEVER operate the AH-4 without an antenna wire. The tuner and transceiver will be damaged. NEVER operate the AH-4 when it is ungrounded. Transmitting before tuning may damage the trans-

ceiver. Note that the AH-4 cannot tune when using a 12 long wire or multiple of the operating frequency. e The [TUNER] light lights constantly when tuning is complete. When the connected wire cannot be tuned, the

[TUNER] light goes out, the AH-4 is bypassed and the antenna wire is connected to the antenna connector on the transceiver directly. 9 CONVENIENT r To bypass the AH-4 manually, push [TUNER]. PTT tune function The AH-4 is always tuned when the PTT is pushed after the frequency is changed (more than 1%). This function removes the push and hold [TUNER] oper-

ation and activates rst transmission on the new fre-

quency. This function is turned ON in initial set mode, item 34 (p. 81). 66 10 DATA COMMUNICATION Connections for packet D When connecting to [DATA] socket DATA OUT r SQ y t AF OUT e PTTP qw GND DATA IN DATA Rear panel TNC SIDE RX AUDIO SQL PTT TX AUDIO GND RS-232C TU or TNC Personal computer D When connecting to [ACC] socket Rear panel

[ACC]

Rear panel view 4 8 12 123 7 6 5 9 11 10 13 MSEND (orenge) GND (red) SQL*1 (light green) AF in (pink) AF out (light blue) TU or TNC

*1Connect SQL line when required. Personal computer Colors refer to connection to the supplied ACC cable. D When connecting to [MIC] connector Rear panel

[MIC]

Rear panel view TU or TNC 67 GND AF out PTT GND MIC SQL Personal computer DATA COMMUNICATION 10

[AF]

[TX] indicator [MODE] Main dial

[Y]

[Z]

USB or LSB blinks when SSB-D mode is selected. LSB USB CW RTTY AM WFM R S1 3 5 7 9 20 40 60dB VFO A PO CH M4 1/4 TON AGC 10 5 Packet (AFSK) operation Before operating packet (AFSK) be sure to consult the operating manual that came with your TNC. q Connect a TNC and PC as left page. w Push [(Y)BAND]/[(Z)BAND] to select the desired band. e Push [MODE] momentarily to select SSB (LSB) mode (or select SSB-D mode). After USB mode is selected, push [MODE] for 1 sec. to toggle between USB and LSB modes. After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and SSB-D modes. Generally, LSB is used on the HF bands and FM is used for the 50 MHz band. r Rotate [AF] to set audio to a comfortable listening level. t Rotate the main dial to tune a desired signal. S-meter indicates received signal strength. y Transmit your AFSK signals using your computers keyboard. The TX indicator lights red. NOTE: When connecting a TNC to the ACC socket on the rear panel, select SSB-D mode or discon-

nect the microphone and adjust MIC GAIN to 0 in quick set mode. When SSB-D mode is selected, the audio input from the [MIC] connector is automatically cut, and the audio input from the [ACC] is used. D Frequency indication during AFSK operation When operating AFSK in SSB mode, the indicated frequency is the signals carrier point. Example SSB-D mode Mark freq.: 2125 Hz Shift freq.: 200 Hz 2325 Hz 200 Hz 2125 Hz Carrier point

(Displayed frequency) 10 68 10 DATA COMMUNICATION D SSB-D mode selection q Push [MODE] one or more times to select RTTY mode. w Push [MODE] for 1 sec. to SSB-D mode. After RTTY mode is selected, push [MODE] for 1 sec. to toggle between RTTY and SSB-D modes. NOTE: When SSB-D mode is selected, the audio input from the [MIC] connector is automatically cut, and the audio input from the [ACC] is used. QUICK SET MODE D Carrier point setting q Select SSB-D mode with [MODE]. w Push [DISPLAY] for 1 sec. to enter quick set mode. e Push [MENU] one or more times to select Q2 CAR SIDE, then rotate the main dial to select U (USB mode) or L (LSB mode).

[MODE]

OPERATING MODE SELECTION USB CW LSB Memory keyer set mode RTTY SSB-D FM AM Push MODE momentarily Push MODE for 1 sec.

[MODE]

[MENU]

[DISPLAY]

Main dial 69 DATA COMMUNICATION 10 D Adjusting the transmit signal from the TNC NOTE: For packet operation the transceiver can be set to one of two data speeds: 1200 bps or 9600 bps. Data speed is set in initial set mode (item 36 9600 MODE; see p.81). q Push [POWER] for 1 sec. to turn power OFF. w While pushing [LOCK], push [POWER] to turn power ON. Initial set mode is selected and one of its items ap-

pears. e Push [MENU] one or more times to select the item 36 9600 MODE.

[M-CH] or [Y]/[Z] can also be used. r Rotate the main dial to select the data speeds:

1200 bps or 9600 bps. t To exit initial set mode, push [POWER] for 1 sec. to turn power OFF. y Push [POWER] to turn power ON again. The conditions selected in initial set mode are now ef-

fective. When setting data transmission speed to 9600 bps, the DATA signal coming from the TNC is applied ex-

clusively to the internal limiter circuitry to automati-

cally maintain bandwidth. NEVER apply data levels from the TNC of over 0.6 Vp-p, otherwise the transceiver will not be able to maintain the band width and may possibly interfere with other stations. NOTE: Read the instructions supplied with your TNC carefully before attempting packet operation with the IC-703.

[POWER]

[MODE] Main dial

[Y]

[Z]

[MENU]

[LOCK]

Main dial 1. When using a level meter or synchroscope, adjust the TX audio level (DATA IN level) from the TNC as follows. 0.4 Vp-p (0.2 Vrms): recommended level 0.2 Vp-p0.5 Vp-p (0.1 Vrms0.25 Vrms):

acceptable level 2. When not using a measuring device. q Connect the IC-703 to a TNC. w Enter a test mode (CAL, etc.) on the TNC, then transmit some test data. e When the transceiver fails to transmit test data or transmits sporadically (TX indicator doesnt appear or ashes):

Decrease the TNC output level until the transmit indicator lights continuously. When transmission is not successful even though the TX indicator lights continuously:

Increase the TNC output level. 10 70 11 CONTROL COMMAND Remote jack (CI-V) information D CI-V connection example The transceiver can be connected through an optional CT-17 CI-V LEVEL CONVERTER to a personal computer equipped with an RS-232C port. The Icom Communi-

cation interface-V (CI-V) controls the following func-

tions of the transceiver. Up to four Icom CI-V transceivers or receivers can be connected to a personal computer equipped with an RS-232C port. See p. 82 for setting the CI-V condition using initial set mode. D Data format The CI-V system can be operated using the following data formats. Data formats differ according to com-

mand numbers. A data area is added for some com-

mands. IC-703 915 V DC Personal computer CONTROLLER TO IC-703 OK MESSAGE TO CONTROLLER FE FE 68 E0 Cn Sc Data area FD FE FE 68 E0 FB FD r e b m u n

) t h g i r t a d n a m m o C l e b a t e e s

(

) d e x i f

(

e d o c l e b m a e r P s s e r d d a t l u a f e d s r e l l o r t n o C s s e r d d a t l u a f e d i s r e v e c s n a r T r e b m u n

) t h g i r t a d n a m m o c l e b a t e e s

(

b u S y r t n e r e b m u n y r o m e m r o y c n e u q e r f r o f a t a d e d o c D C B

) d e x i f

(

e d o c e g a s s e m f o d n E

) d e x i f

(

e d o c l e b m a e r P

) d e x i f

(

e d o c K O s s e r d d a t l u a f e d s r e l l o r t n o C s s e r d d a t l u a f e d i s r e v e c s n a r T

) d e x i f

(

e d o c e g a s s e m f o d n E IC-703 TO CONTROLLER NG MESSAGE TO CONTROLLER FE FE E0 68 Cn Sc Data area FD FE FE 68 E0 FA FD y r t n e r e b m u n y r o m e m r o y c n e u q e r f r o f a t a d e d o c D C B

) d e x i f

(

e d o c e g a s s e m f o d n E

) d e x i f

(

e d o c l e b m a e r P

) d e x i f

(

e d o c G N s s e r d d a t l u a f e d s r e l l o r t n o C s s e r d d a t l u a f e d i s r e v e c s n a r T

) d e x i f

(

e d o c e g a s s e m f o d n E r e b m u n

) t h g i r t a d n a m m o c l e b a t e e s

(

b u S r e b m u n

) t h g i r t a d n a m m o C l e b a t e e s

(

) d e x i f

(

e d o c l e b m a e r P s s e r d d a t l u a f e d s r e l l o r t n o C s s e r d d a t l u a f e d i s r e v e c s n a r T 71 D Command table Command Sub command 00 01 02 03 04 05 06 07 08 09 0A 0B 0E 0F 10 11 13 14 Description Send frequency data Send mode data Same as command 06 00010105*

00 01 02 03 04 05 07 08 00 01 A0 B0 Read band edge frequencies Read operating frequency Read operating mode Set operating frequency Select LSB Select USB Select AM Select CW Select RTTY Select FM Select CW-R Select RTTY-R Select VFO mode Select VFO A Select VFO B Equalize VFO A and VFO B Exchange VFO A and VFO B Select memory mode Select memory channel

*1A=0100, 3b=0105 Memory write Memory to VFO Memory clear Scan stop Programmed/memory scan start Turn the split function OFF Turn the split function ON Select 10 Hz (1 Hz) tuning step Select 100 Hz tuning step Select 1 kHz tuning step Select 5 kHz tuning step Select 9 kHz tuning step Select 10 kHz tuning step Select 12.5 kHz tuning step Select 20 kHz tuning step Select 25 kHz tuning step Select 100 kHz tuning step Select/read attenuator (00=OFF, 20=ON (20 dB)) Announce with voice synthesizer

(00=all data; 01=frequency and S-meter level; 02=operating mode) 01 + Level data [AF] level setting (0=max. CCW to 00 01 00 01 00 01 02 03 04 05 06 07 08 09 00 01 02 255=max. CW) 02 + Level data [RF] level setting (0=max. CCW to 255=11 oclock) 03 + Level data [SQL] level setting (0=11 oclock to 255=max. CW) 04 + Level data [IF SHIFT] position setting (0=max. CCW; 128=center; 255=max. CW) 06 + Level data Noise reduction level setting

(0=min. to 255=max.) 07 + Level data Twin PBT (inside) setting (0=max. CCW, 128=center, 255=max. CW) 08 + Level data Twin PBT (outside ) setting

(0=max. CCW, 128=center, 255=max. CW) 09 + Level data CW pitch setting (0=300 Hz, 128=600 Hz, 255=900 Hz) CONTROL COMMAND 11 Command 14 Sub command 0A + Level data RF power setting (0=mini. to Description 255=max.) 0B + Level data Microphone gain setting (0=mini. to 255=max.) 0C + Level data Key speed setting (0=slow to 255=fast) 0E + Level data COMP Level setting (0=0 to 10=10) 0F + Level data Break-IN DELAY setting (20=2.0d 15 16 19 1A 01 02 11 12 13 02 12 22 40 41 42 43 44 45 46 47 00 00 01 02 0301 0302 0303 0304 0305 0306 0307 0308 0309 0310 0311 0312 0313 to 130=13.0d) Read squelch condition Read S-meter level Read RF power meter Read SWR meter Read ALC meter Preamp (0=OFF; 1=preamp 1;

2=preamp 2) AGC selection (1=Fast; 2=Slow) Noise blanker (0=OFF; 1=ON) Noise reduction (0=OFF; 1=ON) Auto notch (0=OFF; 1=ON) Subaudible tone (0=OFF; 1=ON) Tone squelch (0=OFF; 1=ON) Speech compressor (0=OFF; 1=ON) Monitor (0=OFF; 1=ON) VOX function (0=OFF; 1=ON) Break-in (0=OFF; 1=semi break-

in; 2=full break-in) Read the transceiver ID Send/read memory contents Send/read band stacking register contents (see p. 73 for details) Send/read memory keyer con-

tents (see p. 73 for details) Send/read beep emission set

(0=OFF, 1=ON) Send/read band edge beep set

(0=OFF, 1=ON) Send/read beep output level set

(0=min. to 255=max.) Send/read beep limit set (0=OFF, 1=ON) Send/read CW carrier point set

(0=LSB, 1=USB) Send/read CW side tone level set

(0=min. to 255=max.) Send/read CW side tone limit set

(0=OFF, 1=ON) Send/read 9600 bps mode set

(0=OFF, 1=ON) Send/read VOX gain set (0=min. to 255=max.) Send/read anti VOX gain set

(0=min. to 255=max.) Send/read VOX delay time set

(0=0 sec. to 20=2.0 sec.) Send/read meter selection

(0=Power, 1=SWR, 3=ALC) Send/read SSB carrier frequency

(00=200 Hz to 40=200 Hz;

10 Hz steps) 11 CW: Clockwise, CCW: Counter Clockwise 72 11 CONTROL COMMAND Command table (continued) Command Sub command Description 1A 1B 1C 0314 0315 0316 0317 0318 0319 0320 0321 0322 0323 0324 04 00 01 00 01 Send/read RTTY marker fre-

quency (0=1275 Hz, 1=1615 Hz, 2=2125 Hz) Send/read RTTY shift width

(0=170 Hz, 1=200 Hz, 2=425 Hz) Send/read RTTY keying polarity

(0=Normal, 1=Reverse) Send/read noise blanker level

(0=min. to 255=max.) Send/read key type (0=Normal, 1=Reverse, 2=Bug, 3=OFF, 4=Mic. [UP]/[DN]) Send/read CW keyer dot/dash ratio (28=1:1:2.8 to 45=1:1:4.5) Send/read CW keyer repeat time

(01=1 sec. to 60=60 sec.) Send/read CW keyer transmission indication (0=Normal, 1=First 3-

character, 2= First 3-character+

contact number) Send/read contact number style

(0=Normal, 1=190ANO, 2=190ANT, 3=90NO, 4=90NT) Send/read count up trigger chan-

nel (1=MK1, 2=MK2, 3=MK3) Send/read present number (1999) Send/read DATA mode (0=OFF, 1=ON) Set/read repeater tone frequency Set/read TSQL tone frequency Set/read the transceivers condi-

tion (0=Rx; 1=Tx) Set/read antenna tuner condition

(0=OFF, 1=ON, 2=Start tuning or while tuning) D Band stacking register To send or read the desired band stacking registers con-

tents, combined code of the frequency band and register codes as follows are used. For example, when sending/reading the contents in the 21 MHz band, the code 0701 is used. Frequency band code Code Frequency range (unit: MHz) Freq. band 01 02 03 04 05 06 07 08 09 10 11 1.8 3.5 7 10 14 18 21 24 28 50 GENE 1.8000001.999999 3.4000004.099999 6.9000007.499999 9.90000010.499999 13.90000014.499999 17.90000018.499999 20.90000021.499999 24.40000025.099999 28.00000029.999999 50.00000054.000000 Other than above 73 Register code Code 01 Registered number 1 D Codes for memory keyer contents To send or read the desired memory keyer contents, the channel and character codes as follows are used. Channel code Code 01 02 03 Channel number MK1 MK2 MK3 Characters code Character ASCII code 09 AZ space

/

?

,

.

^

3039 415A 20 2F 3F 2C 2E 5E 2A Description Numerals Alphabetical characters Word space Symbol Symbol Symbol Symbol e.g., to send BT, enter ^4254 Inserts contact number (can be used for 1 channel only) D Codes for memory name contents To send or read the desired memory name settings, the character codes, instructed codes for memory keyer con-

tents as above, and follows are additionally used. Characters code Alphabetical characters Character ASCII code Character ASCII code az 617A Characters code Symbols Character ASCII code Character ASCII code

!

$

&

?

+

:

=

>

)

]

}

_ 21 24 26 3F 27 2B 3A 3D 3E 29 5D 7D 5F

#

%

`

;

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(

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23 25 5C 22 60 2D 3B 3C 28 5B 7B 7C 7E General Set mode is used for programming infrequently changed values or conditions of functions. The IC-703 has 2 separate set modes: quick set mode and initial set mode. D Quick set mode operation q While power is ON, push [DISPLAY] for 1 sec. Quick set mode is selected and one of its items ap-

pears. Quick set mode items vary depending on the selected operating mode (SSB, FM, etc.). w Push [MENU] one or more times to select the de-

sired item.

[M-CH] or [Y]/[Z] can also be used. e Rotate the main dial to set the values or conditions for the selected item. r Repeat steps w and e to set other items. t To exit quick set mode, push [DISPLAY] momen-

tarily. D Initial set mode operation q Push [POWER] for 1 sec. to turn power OFF. w While pushing [LOCK], push [POWER] to turn power ON. Initial set mode is selected and one of its items ap-

pears. e Push [MENU] one or more times to select the de-

sired item.

[M-CH] or [Y]/[Z] can also be used. r Rotate the main dial to set the values or conditions for the selected item. t Repeat steps e and r to set other items. y To exit initial set mode, push [POWER] for 1 sec. to turn power OFF. u Push [POWER] to turn power ON again. The conditions selected in initial set mode are now ef-

fective. SET MODE 12

[POWER]

Main dial

[Y]

[Z]

[M-CH]

[MENU]

[DISPLAY]

[DISPLAY EXAMPLE: QUICK SET MODE]

USB S1 3 5 7 9 20 40 60dB PO 5 10 Q1 RF POWER Value or condition Item Item number

[POWER]

Main dial 11 12

[Y]

[Z]

[M-CH]

[MENU]

[LOCK]

[DISPLAY EXAMPLE: INITIAL SET MODE]

Value or condition 1 MAX POWSET Item Item number 74 12 SET MODE Quick set mode items Mode Set mode item Default setting Mode Set mode item Default setting SSB Q1 RF POWER Q2 MIC GAIN Q3 CARRIER Frq Q1 RF POWER CW Q2 KEY SPEED Q3 CW REV H 5 level 0 [Hz]

H 20 [WPM]

n (normal) RTTY SSB-D FM/AM Q1 RF POWER Q2 RTTY REV Q1 RF POWER Q2 CAR SIDE Q1 RF POWER Q2 MIC GAIN H n (normal) H L (LSB side) H 5 level Q1 RF POWER (all modes) This item adjusts the RF output power. The RF out-

put power can be adjusted from L, 1 to 9 and H for in-

dication, however, it can be adjusted continuously. Q2 MIC GAIN (SSB/AM/FM modes) This item adjusts microphone gain from 1 to 10 for in-

dication, however, it can be adjusted continuously. Q2 KEY SPEED (CW mode) This item adjusts the CW key speed. The key speed can be selected from 6 to 60 wpm. Q2 RTTY REV (RTTY mode) This item selects RTTY or RTTY (RTTY reverse) mode. Q2 CAR SIDE (SSB-D mode) This item selects the carrier point. USB mode or LSB mode are selectable. Q3 CARRIER Frq (SSB mode) This item adjusts the carrier frequency (BFO fre-

quency), allowing you to change the audio character-

istics. Selectable values are 200 to +200 Hz in 10 Hz steps. Q3 CW REV (CW mode) This item selects CW or CW (CW reverse) mode. CW RTTY LSB USB CW 75 The default is H (maximum power). Note that while adjusting the output power, the power meter is displayed automatically. The default is 5. Note that while adjusting mic gain, the ALC meter is displayed automatically. The default is 20 wpm. The default is normal. The default is LSB mode. The default is 0 Hz. The default is normal. SET MODE 12 Initial set mode items 1 MAX POWSET

(Max. output power setting) This item selects maximum output power. The max. power is can be set 10, 5, 2.5, 1 or 0.5 W. The default is 10 W. 2 PoSAVE MODE

(Power save setting) The power save mode reduces the current drain to conserve battery power. This function is convenience for battery operation. AUTO : The power save function starts in 1:1 (200 msec.:200 msec.) ratio when no signal is re-

ceived for 5 sec., then the ratio becomes in 1:4 (200 msec.:800 msec.) and 1:8 (200 msec.:1600 msec.) after no signal is received every 60 sec. are past.

(1 :) 1, 4, 8, 16:

The power save function activates selected ratio. oFF : The power save function does not activate. 3 SIMPLE MODE

(Simple mode setting) This item select the simple mode and normal mode. on : Simple mode is selected. (*) marked items in initial set mode are hidden, and push [DISPLAY] to se-

lect Main menu or Sub menu only, Graphic menu also hidden. oFF : Normal mode is selected. 4 MODE SELECT (Mode Availavility) This item is available in all modes, and allows you to simplify operation by inhibiting the selection of un-

needed operating modes during normal operation. For example if you are operating mobile and only plan on using FM and AM modes, use 4 MODE SE-

LECT to inhibit access to all other modes (SSB, CW, RTTY), thereby making selection of AM or FM quick and easy. The default is OFF. Simple mode ON Simple mode OFF

(default) The default is on for all operating modes. To toggle an operating mode on or off, push (or push and hold)

[MODE] one or more times until the desired mode is displayed, then rotate the main dial to set on or off. 12

(Output power setting for modes)

* 5 MODE POWSET This item allows you to set the output power for each operating mode. on : Output power can be set for each mode groups. oFF: Same output power for every mode. The mode groups are separated SSB-D/USB/LSB, CW and RTTY/AM/FM. The default is OFF. When 3 SIMPLE MODE is set to ON, * marked items are undisplayed. 76 12 SET MODE 6 BEEP (Conrmation beeps) A beep sounds each time a switch is pushed to con-

rm it. This function can be turned OFF for silent op-

eration.

* 7 BAND BEEP (Band edges beep) A beep sounds when an operating frequency enters or exits a transmit frequency range. This functions inde-

pendent of the conrmation beep setting (above). 8 BEEP LEVEL

(Beep level adjustment) When 6 BEEP is set ON, this item adjust the con-

rmation beep level. Adjustable levels are 0 to 10 in 1 steps.

(Beep audio level limit)

* 9 BEEP LIMIT This item allows you to set a maximum volume level for conrmation beep tones. Conrmation beep tones are linked to the [AF] control until a specied volume level is reached further rotation of the [AF] control will not increase the volume of the beep tones. Confirmation beep ON

(default) Confirmation beep OFF Band beep ON

(default) Band beep OFF The default is 5. Beep limit ON

(default) Beep limit OFF

* 10 CW NOR SIDE This item select the carrier point of CW mode from LSB and USB.

(CW carrier point setting) The carrier point is LSB side (default). The carrier point is USB side. 11 SID-T LEVEL

(CW side tone level) This item sets the CW side tone output level. Selec-

table levels are 0 to10 in 1 steps. The default is 5.

* 12 SID-T LIMIT This item sets the CW side tone level limit. When the

[AF] control is rotated above a specied level, the CW side tone does not increase.

(CW side tone level limit) on : CW side tone level is limited. (default) oFF : CW side tone level is not limited. CW side tone limit ON

(default) CW side tone limit OFF 77 When 3 SIMPLE MODE is set to ON, * marked items are undisplayed. SET MODE 12

* 13 SYNC TUNING This item selects the displayed frequency shift func-

tion from ON and OFF.

(SSB/CW frequency shift setting) When this function is activated, the receiving signal can be kept in receive even when the operating mode is changed between SSB and CW. oN : The displayed frequency shifts when the oper-

ating mode is changed between SSB and CW. oFF: The displayed frequency does not shift. (default) 14 BACK LIGHT

(Display backlighting) The function display backlighting can be set to high, low or OFF to suit ambient lighting. 15 KEY LIGHT

(Key/switch backlighting) The key/switch backlighting can be set to high, low or OFF to suit ambient lighting.

* 16 LIGHT TIMER The Light timer can be set to AUTO, ON or OFF to suit lighting condition.

(Light timer setting) Auto: Automatically select on or oFF depends on power supply voltage. (default) on : Lights when some operation is performed, goes out after 5 sec. oFF : Lights continuously during transceiver power is ON. 17 LED BRIGHT (LED brightness) The LED brightness control for front panel can be set to high or low. Synchronous tuning ON Synchronous tuning OFF

(default) The frequency shifting value may differ according to the CW pitch setting. Display backlighting set to high (default). Display backlighting set to low. Key/switch backlighting set to high (default). Key/switch backlighting set to low. Default is Auto. 12 LED brightness set to high. LED brightness set to low (default).

(Automatic power OFF)

* 18 AUTO OFF The auto power OFF function can be used to auto-

matically turn the transceiver OFF after a specified time of operation. This item can be set to 30 min., 60 min., 90 min., 120 min., or OFF. Auto power OFF deactivates. (default) Auto power OFF set to 20 min. When 3 SIMPLE MODE is set to ON, * marked items are undisplayed. 78 12 SET MODE 19 CURRENT IP

(Current intercept point) This item set the control of current intercept point for power saving. Auto: Automatically select on or oFF depends on power supply voltage. (default) on : Power saving mode continuously. oFF : Priority to intercept point.

* 20 RF/SQL (RF gain/squelch control) The [RF/SQL] control can be set as the squelch con-

trol (default), the RF/squelch control (USA version de-

fault) or automatic (acts as squelch in FM/AM modes;

as RF in SSB/CW/RTTY modes). (See p. 24)

* 21 SUB DIAL (Sub dial setting) When this item is set to rit, pushing [RIT/SUB] turns the RIT function ON (lights red)rotating [M-CH]

changes the RIT frequency; when this item is set to FrEq, pushing [RIT/SUB] turns the sub dial function ON (lights green)rotating [M-CH] changes the op-

erating frequency. Note that in FM and AM modes, pushing [RIT/SUB] always selects the sub dial func-

tion (lights green), regardless of this setting. 22 OPT. FIL

(Optional lter selection) When an optional filter is installed, this selection is necessary, otherwise the filters cannot be selected. Selections available are FL-52A, FL-53A, FL-222, FL-

257 and none (default). See p. 49 for usable lters for each mode and see p. 87 for lter installation.

* 23 PEAK HOLD When the peak hold function is ON, the highest acti-

vated segment of the meter remains visible for 0.5 sec.; when OFF, the meter functions normally.

(Peak meter hold setting)

* 24 QUICK SPLIT When this item is set to ON, pushing [(F-1)SPL] for 1 sec. in the M1 display sets the undisplayed VFO fre-

quency to the displayed VFO frequency plus the split offset, and activates split operation.

(Quick split function) Default is Auto. The [RF/SQL] control functions as RF gain and squlch control for all modes. The [RF/SQL] control functions as squelch control only. Pushing [RIT/SUB]

selects the RIT function

(default). Pushing [RIT/SUB]

selects the sub dial function. No filters are selected

(default). FL-52A (for CW narrow filter) is selected. Although the FL-96 is not listed on the option list, IC-703 would take FL-96 as well as other optional lter. Peak hold ON

(default) Peak hold OFF Quick split function ON

(default). Quick split function OFF. 79 When 3 SIMPLE MODE is set to ON, * marked items are undisplayed.

* 25 SPLIT LOCK When this item is ON, the main dial can be used to adjust frequency while pushing

[(F-3)XFC] even when the lock function is activated.

(Split lock function) transmit the SET MODE 12 Split lock function OFF

(default) Split lock function ON 26 SPL OFFSET

(Split offset frequency) This item sets the offset (difference between transmit and receive frequencies) for the quick split function. Available offset frequencies are 9.999 to 9.999 MHz in 0.001 MHz (1kHz) steps. 27 SCAN RESUME

(Scan resume condition) Default is 0.000 MHz. This item sets the scan resume function ON or OFF. on : Scan resumes 10 sec. after stopping on a sig-

nal (or 2 sec. after a signal disappears);

oFF: Scan does not resume after stopping on a sig-

nal. For the priority watch, setting to OFF pauses the watch until signal disappears and scan resumes. 28 SCAN SPEED (Scanning speed) This item sets the rate at which channels or frequen-

cies are scanned during scan operations. High or low can be selected. 29 U/D SPEED ([UP]/[DN] speed) This item sets the rate at which frequencies are scanned through when the [UP]/[DN] switches of the microphone are pushed and held. High or low can be selected.

* 30 AM NB (Noise blanker in AM mode) When this item is set to ON, the noise blanker func-

tion is available in AM mode. This is useful when communicating in AM mode (the noise blanker func-

tion should not be used when listening to regular AM broadcasts as it may degrade the received audio). 31 PAD CH (Available memo pads) This item sets the number of memo pad channels available. 5 or 10 memo pads can be selected. Scan resume function is turned ON (default). Scan resume function is turned OFF. Scan speed is set to high

(default). Scan speed is set to low. Up/down speed is set to high (default). Up/down speed is set to low. 12 Noise blanker is available on AM mode. (default) Noise blanker is not available on AM mode. 5 memo pads are available

(default). 10 memo pads are available. When 3 SIMPLE MODE is set to ON, * marked items are undisplayed. 80 12 SET MODE 32 PWR ON CHK

(Power on check function) This item selects the indication ON or OFF when turn-

ing power ON. on : The Transceiver briey displays All indication, RF power and Power supply voltage when turning power ON. oFF: The display goes directly to frequency indication at power ON. Power on check ON

(default) Power on check OFF

(Auto tune start function)

* 33 A-TUNE STRT The optional AT-180 ANTENNA TUNER has an automatic start capability which starts tuning if the SWR is higher than 1.53. oFF: The tuner remains OFF even when the SWR is poor (1.53). on : Automatic tune starts even when the tuner is turned OFF.

* 34 PTT TUNE (PTT tune function) This item set the PTT tuner start function ON or OFF. This function activates internal tuner and optional AT-

180/AH-4 ANTENNA TUNER, when connected. on : The tuner is always tuned when the PTT is pushed after the frequency is changed (more than 1% from last-tuned frequency). (Internal tuner or connected AT-180) Tuning can be started automatically at the mo-

ment the PTT is pushed. (Connected AH-4) oFF : PTT tuner start function OFF.

* 35 TUNER SW This item select BAND or ALL.

(Tuner switch condition) bAnd : [TUNER] switch ON/OFF condition is re-

mained for each band. ALL : [TUNER] switch ON/OFF condition is com-

monly remained for all band. 36 9600 MODE (Packet data speed) This item is used to change the communications speed for packet operation. The data socket speed can be set to 1200 or 9600 baud. Auto tune function OFF

(default). Auto tune function ON. NOTE: Even when on is selected, automatic tune does not start for the 50 MHz band. Tuning starts only when

[TUNER] is pushed (default). Tuning starts when pushing

[PTT] on a new frequency. The default is BAND. Default is 9600 baud. 81 When 3 SIMPLE MODE is set to ON, * marked items are undisplayed. SET MODE 12 37 SPEECH LANG

(Voice synthesizer language) When the optional UT-102 VOICE SYNTHESIZER UNIT is installed, you can select between English and Japan-

ese as the language. Voice synthesizer functions in English (default). Voice synthesizer functions in Japanese. 38 SPEECH SPD

(Voice synthesizer speed) When the optional UT-102 VOICE SYNTHESIZER UNIT is installed, you can select the speech speed of synthe-

sizer output between faster or slower. Speech speed is faster (default). Speech speed is slower. 39 S-LVL SPCH

(S-meter level speech) When an optional UT-102 SPEECH SYNTHESIZER UNIT is installed, the synthesizer can be set to read out the frequency/mode only, or both the frequency/mode and S-meter level. 40 CI-V ADDRES

(CI-V address setting) To distinguish equipment, each CI-V transceiver has its own Icom standard address in hexadecimal code. The IC-703s address is 68H. When 2 or more IC-703s are connected to an op-

tional CT-17 CI-V LEVEL CONVERTER, rotate the main dial to select a different address for each IC-703 in the range 01H to 7FH.

* 41 CI-V BAUD This item sets the data transfer rate. When Auto is selected, the baud rate is automatically set according to the connected controller or remote controller.

(CI-V data transffer rate)

* 42 CI-V TRN (CI-V transceive) Transceiver operation is possible with the IC-703 con-

nected to other Icom HF transceivers or receivers. When on is selected, changing the frequency, oper-

ating mode, etc. on the IC-703 automatically changes those of connected transceivers (or receivers) and vice versa. Voice synthesizer reads out both the frequency/mode and S-meter level (default). Voice synthesizer reads out the frequency/mode only. Address set to 68H

(default). Address set to 7FH. Auto baud rate (default) 19200 bps 12 Transceive ON

(default) Transceive OFF

(CI-V operating frequency data length)

* 43 CI-V 731 When connecting the IC-703 to the IC-735 for trans-

ceiver operation, you must change the operating fre-

quency data length to 4 bytes. This item MUST be set to on only when operating trans-

ceiver with the IC-735. Frequency data set to 5 bytes (default). Frequency data set to 4 bytes. When 3 SIMPLE MODE is set to ON, * marked items are undisplayed. 82 13 MAINTENANCE Fuse replacement If a fuse blows or the transceiver stops functioning, try to nd the source of the problem, and replace the dam-

aged fuse with a new, rated fuse. CAUTION: Disconnect the DC power cable from the transceiver when changing a fuse. The IC-703 has three of fuses (DC power cable fuses 2, circuitry fuse1) installed for transceiver protection. Fuses ............................................. F.G.B. 125 V 4 A CIRCUITRY FUSE REPLACEMENT The 13.8 V DC from the DC power cable is applied to all units in the IC-703, except for the power amplier, through the circuitry fuse. This fuse is installed in the PA unit. DC POWER CABLE FUSE REPLACEMENT q w e Fuse Memory backup All of the CPUs memory is backed up by an EEP-

ROM (Electronically-Erasable Programmable Read-

Only Memory). All data you set, such as VFO, memory, set mode contents, etc. is stored in this EEPROM. There is no internal lithium battery. Cleaning If the transceiver becomes dusty or dirty, wipe it clean with a dry, soft cloth. 83 AVOID the use of strong chemical solvents such as thinner, benzine or alcohol to clean the transceiver. These may damage the transceivers surfaces. TROUBLESHOOTING 14 The following chart is designed to help you correct problems which are not equipment malfunctions. If you are unable to locate the cause of a problem or solve it through the use of this chart, contact your near-

est Icom Dealer or Service Center. Y L P P U S R E W O P I E V E C E R PROBLEM POSSIBLE CAUSE SOLUTION Power does not come on when the [POWER]

switch is pushed. DC power cable connected. Fuse is blown. is improperly Reconnect the power cable correctly. Check for the cause, then replace the fuse with a spare one.

(Fuses are installed in two places. One is installed in the DC power cable and the other is installed in the PA unit. REF. p. 15 p. 83 Battery is exhausted if you are using a 12 V battery as the power source. Check the battery voltage with the

[POWER] pushed IN. No sound comes from the speaker. Volume level is set too low. Rotate [AF] clockwise to obtain a suit-

able listening level. pgs. 1, 17, 23 The squelch is closed. Rotate [SQL] counterclockwise to open the squelch. pgs. 1, 17, 24 The transceiver is in the transmitting condition. Release [PTT] on the microphone or check the SEND line of an external unit, if connected. An external speaker or headphones are connected. Check the external speaker or head-

phone plug connection. p. 14 Sensitivity is low. The antenna is not connected properly. Reconnect to the antenna connector. The antenna feed line is cut or shorted. Check the feed line and correct any improper conditions. The antenna is not properly tuned. Push [TUNE] to manually tune the antenna. pgs. 64 66 The attenuator function is activated. Push [ATT] to turn the function OFF. Receive audio is distor-

ted. The operating mode is not selected correctly. Select a suitable operating mode. The [SHIFT] control is set off-center. Set [SHIFT] to the center position. Receive signal is distor-

ted with strong signals. Noise blanker function is activated. Push [(F-2)NB] in the M3 display to turn the function OFF. p. 46 p. 23 p. 47 p. 48 Preamp is activated. Push [P.AMP] to turn the function OFF. p. 46 13 14 84 14 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION Transmitting is impossi-

ble. The operating frequency is not set to a ham band. Set the frequency to a ham band. REF. p. 19 Output power is too low. Power is set to a lower power than maximum. Set the output power in quick set mode/initial set mode. pgs. 25, 26 Microphone gain is set too low. Set microphone gain to a suitable position using quick set mode. p. 26 The antenna is not connected properly. Reconnect the antenna connector. The antenna feed line is cut or shorted. The antenna is not properly tuned. Check the feed line and correct any improper conditions. Push [TUNE] to manually tune the antenna. The transceiver turning ON the battery operating mode. Check the battery voltage with the

[POWER] pushed IN. No contact possible with other stations. RIT function is activated. Split function is activated. Push [RIT] to turn the function OFF. Push [(F-1)SPL] in the M1 display to turn the function OFF. pgs. 6466 pgs. 1, 25 p. 47 p. 51 I T M S N A R T Y A L P S D I N A C S Repeater cannot be ac-

cessed. Split function is not activated. An incorrect transmit frequency is set. Push [(F-1)SPL] in the M1 display to turn the function ON. p. 51 Set the proper frequencies into VFO A and B or into one of the memory channels. p. 19 Subaudible tone encoder is OFF and repeater requires a tone for access. Use [(F-2)TON] in the M4 display to se-

lect FM-T. p. 45 Programmed subaudible tone fre-

quency is wrong. Program the required frequency using FM tone set mode. p. 44 Transmitted signals are distorted. Microphone gain is set too high. Set gain in quick set mode. The compression level is set too high with the speech compressor ON. Set compression level to a suitable position. Displayed frequency does not change proper-

ly. The dial lock function is activated. The internal CPU has malfunctioned. Push [LOCK] to deactivate the func-

tion. Reset the CPU.

(While pushing [UP] and [DN] push [POW-

ER] to turn power ON. p. 26 p. 54 p. 25 p. 17 Programmed scan does not stop. Squelch is open. Set squelch to the threshold position. p. 24 Programmed scan does not start. The same frequencies have been programmed in scan edge memory channels. Programm different frequencies into scan edge memory channels. p. 62 Memory scan does not start. 2 or more memory channels have not been programmed. Program 2 or more memory chan-

nels. Memory select scan does not start. 2 or more memory channels have not been designated as select channels. Designate 2 or more memory chan-

nels as select channels for the scan. p. 62 p. 63 85 OPTION UNIT INSTALLATIONS AND SETTINGS 15 Opening the transceiver case To remove the transceiver case unscrew the 18 screws

(5 in the top panel, 5 in the bottom panel, 8 in the side panels: 4 pieces each) as shown in the diagram below. Caution: Disconnect the DC power cable from the transceiver before performing any work on the transceiver. Top cover Speaker cable Bottom cover UT-102 R7205 UT-102 VOICE SYNTHESIZER UNIT The UT-102 announces the accessed bands fre-

quency, mode, etc. (S-meter level can also be an-

nouncedp. 82) in a clear, electronically generated voice, in English (or Japanese). q Remove the top cover as shown above. w Connect the UT-102 as shown in the diagram at right (label side up). e Replace the top cover. DOperation q Select the desired announcing condition, such as speed, language, contents, in initial set mode.

(p. 82) w Push [LOCK] for 1 sec. (until zero is announced) to announces the selected contents. MAIN unit Adjusting the announcing audio level Adjust the R7205 on the MAIN unit .

[LOCK]

14 15 86 15 OPTION UNIT INSTALLATIONS AND SETTINGS IF lter Several IF lters are available for the IC-703. Choose a lter most appropriate to your operating needs. NOTE: After lter installation, specify the installed lter using initial set mode (item 22, p.79). Other-

wise, the installed lter will not function properly. FL-52A CW/RTTY NARROW FILTER FL-53A CW NARROW FILTER FL-222 SSB NARROW FILTER FL-257 SSB WIDE FILTER 500 Hz/6 dB 250 Hz/6 dB 1.8 kHz/6 dB 3.3 kHz/6 dB q Remove the top cover as shown on the previous page. w Disconnect the coaxial cable connectors, P2 and P4, then unscrew 10 screws on the MAIN unit. Attach the grounding spring at the same place when re-

turning. e Slide the MAIN unit in the direction of the arrow q, then open the MAIN unit in the direction of the arrow w. Be careful for the at cables. Front side Grounding spring w q Red belt Rear side Flat cable P2 (J2) P4 (J1) r Install the desired filter as shown in the diagram below. Optional IF filter Flat washers t Tighten the nuts then solder the lters pins. y Return the MAIN unit to the original position. Nuts Soldering points Make sure to attach the grounding spring to the original position. u Connect P2 and P4 to J2 and J1, respectively. i Replace the top cover. 87 OPTION UNIT INSTALLATIONS AND SETTINGS 15 Front side P1

(UT-106) J2451 Flat cable UT-106 J3 J1 J2453 P2451 y Reassemble the transceiver. UT-106 DSP RECEIVER UNIT q Open the transceiver top cover as shown on p. 86. w Remove the 4-pin connector (P2451) from main CPU shielding case on the MAIN unit (top side) and plug it into J1 of the UT-106. J2451 Front side Main CPU shielding case MAIN unit

(top side) P2451 e Plug the 4-pin connector (P1) from the UT-106 into J2451 on the MAIN unit. r Plug the supplied at cable into J3 on the UT-106 and J2453 on the MAIN unit. Be careful of the orientation of the at cable. t Attach the UT-106 to the main CPU shielding case, using the existing guide for alignment, as illustrated at right above MB-72 CARRYING HANDLE The optional MB-72 CARRYING HANDLE is convenient when carrying the transceiver for DXpeditions, field operation, etc. q Tighten the supplied screws plus rubber feet as w Attach the MB-72 to the left side of the transceiver shown below. Rubber feet as shown below. Carrying handle 15 88 15 OPTION UNIT INSTALLATIONS AND SETTINGS AT-180 internal switch description The optional AT-180 has 3 operating conditions for HF band operation. Select a suitable condition according to your antenna system. AT-180 inside top cover S2 S1 D C B A q Remove the top cover of the AT-180. w Set the tuner switches to the desired positions ac-

cording to the table below. SW Position Operation A

(default) The tuner operating condition is set by S2 described below. THROUGH INHIBIT The tuner tunes the antenna even when the antenna has poor SWR (up to VSWR 3:1 after tuning). In this case, manual tuning is necessary each time you change the fre-

quency although the tuner automatically starts tuning when the VSWR is higher than 3:1. This setting is called through inhibit, however, the tuner is set to through if the VSWR is higher than 3:1 after tuning. TUNER SENSITIVE CONDITION The tuner tunes each time you transmit (ex-

cept SSB mode). Therefore, the lowest SWR is obtained at any given time. For SSB mode, the same condition as the D position. NORMAL CONDITION The tuner tunes when the SWR is higher than 1.5:1. Therefore, the tuner activates only when tuning is necessary. B C 1 S 2 S D

(default) Specications for the AT-180 Connector information for ACC(2) socket

: 50

: 120 W Frequency coverage : 1.954 MHz Input impedance Maximum input power Minimum tuning power Matching impedance : 16.7150 (HF band) range Tuning accuracy Insertion loss

: 8 W 20125 (50 MHz band)

: Less than SWR 1.5:1

: Less than 1.0 dB

(after tuning)

: 13.8 V DC/1 A (supplied from the transceivers ACC socket)

: 167(W) 58.6(H) 225(D) 6916(W) 2517(H) 878(D)

: 2.4 kg; 5 lb 4 oz Power supply requirements Dimensions (mm/in) Weight Supplied accessories : coaxial cable (1 m), ACC cable (DIN 13 pins) 89 2 5 3 7 4 1 6 ACC 2 PIN NO./

NAME q 8 V DESCRIPTION Regulated 8 V output.

(10 mA max.) w GND Connects to ground. e SEND Input/output pin. Goes to ground when transmitting (20 mA max). When grounded, transmits. r BAND Band voltage output.

(Varies with amateur band; 0 to 8.0 V). t ALC y NC ALC output voltage (4 to 0 V). No connection. u 13.8V 13.8 V output when power is ON (1 A max). General Frequency coverage : Receive 30 kHz60.00000 MHz*

Transmit 1.99999 MHz*

1.800 3.9999 MHz*

3.500 7.000 7.300 MHz*

10.100 10.150 MHz 14.000 14.350 MHz 18.068 18.168 MHz 21.000 21.450 MHz 24.890 24.990 MHz 28.000 29.700 MHz 50.000 54.000 MHz*

*Depending on version.

: SSB, CW, AM, FM, RTTY

: 105 (split memory: 99; scan edges: 6) Mode Number of memory channels Antenna connector Usable temperature : 10C to +60C (+14F to +140F) range Frequency stability

: Less than 0.5 ppm

: SO-239 /50 Power supply requirement Current drain

(0C to +50C; +32F to +122F).

: 915.87 V DC (negative ground)

:

Transmit Receive squelched 2.0 A typ. (TX 5 W at 9.6 V DC) 3.0 A typ. (TX 10 W at 13.8 V DC) 300 mA typ. (at 9.6 V DC) max. audio 450 mA typ. (at 9.6 V DC) 1.2 A (at 13.8V DC)

: 167(W) 58(H) 200(D) mm, Dimensions

(projections not included) 6916(W) 2516(H) 778(D) in Weight CI-V connector ACC connector

: 2.0 kg (4 lb 4 oz)

: 2-conductor 3.5 (d) mm (18)

: 13-pin Transmitter Output power

:

SSB, CW, FM, RTTY 0.15 W (at 9.6 V DC) AM Modulation system :

0.110 W (at 13.8 V DC) 0.12 W (at 9.6 V DC) 0.14 W (at 13.8 V DC) SSB AM FM Balanced modulation Low level modulation Variable reactance modulation Spurious emissions : Less than 60 dB*

*spurious freq.: below 30 MHz: 50 dB; above 50 MHz: 60 dB Carrier suppression : More than 40 dB Unwanted sideband : More than 50 dB Microphone connector KEY connector

: 8-pin modular jack (600 )

: 3-conductor 6.35 (d) mm (14") SPECIFICATIONS 16 Receiver Receive system Intermediate frequencies:

: Double-conversion superheterodyne 1st 2nd 64.455 MHz 455 kHz Sensitivity at pre-amp ON (typical):

SSB/CW/RTTY Frequency range 10 dB S/N 10 dB S/N 12 dB SINAD AM FM 0.51.8 MHz 1.828 MHz 2829.7 MHz 5054 MHz 0.16 V 0.13 V 13 V 2.0 V 1.0 V 0.5 V 0.25 V Squelch sensitivity (threshold; preamp ON) :

SSB/CW/RTTY/AM Less than 5.6 V FM Less than 0.32 V Selectivity* (typical)

:

SSB/CW AM/FM-N FM More than 2.4 kHz/6 dB Less than 4.0 kHz/60 dB More than 9.0 kHz/6 dB Less than 20.0 kHz/50 dB More than 15.0 kHz/6 dB Less than 30.0 kHz/50 dB

*Without optional lter and with mid band selected. Spurious and image rejection ratio:

HF bands 50 MHz band Audio output power RIT variable range PHONES connector EXT SP connector More than 70 dB More than 65 dB (except IF through)

: More than 0.5 W at 10% distortion with an 8 load (at 9.6 V DC) More than 1.0 W at 10% distortion with an 8 load (at 13.8 V DC)

: 9.99 kHz max.

: 3-conductor 3.5 (d) mm (18)/8

: 2-conductor 3.5 (d) mm (18)/8 Antenna tuner Matching impedance range:

HF bands 50 MHz band 16.7 to 150 unbalanced

(Less than VSWR 3:1) 20 to 125 unbalanced

(Less than VSWR 2.5:1) Tuning accuracy Insertion loss

: VSWR 1.5:1 or less

: Less than 1.0 dB (after tuning) 15 16 90 17 OPTIONS AT-180 HF/50 MHz AUTOMATIC AH-4 HF AUTOMATIC ANTENNA AH-2b ANTENNA ELEMENT ANTENNA TUNER TUNER Fully automatic antenna tuner with preset memories for each 100 kHz. Unique auto-

matic tuner on function is available. See p. 89 for AT-180 specications. Specially designed to tune a long wire an-

tenna for portable or mobile HF/50 MHz op-

eration. The PTT tune function provides simple operation. Input power rating: 150 W A 2.5 m long antenna ele-

ment for mobile operation with the AH-4. Frequency coverage 754 MHz band with the AH-4 Optional lters HM-103 HAND MICROPHONE SM-20 DESKTOP MICROPHONE FL-52A CW/RTTY NARROW FILTER

(500 Hz/6 dB) FL-53A CW NARROW FILTER

(250 Hz/6 dB) FL-222 SSB NARROW FILTER

(1.8 kHz/6 dB) FL-257 SSB WIDE FILTER

(3.3 kHz/6 dB) Standard hand microphone. Includes [UP]/[DOWN] switches and a low cut function. The OPC-589 is necessary to use this microphone. CT-17 CI-V LEVEL CONVERTER SP-7 EXTERNAL SPEAKER SP-10 EXTERNAL SPEAKER UNIT For remote transceiver control using a per-

sonal computer equipped with an RS-232C port. You can change frequencies, operat-

ing mode, memory channels, etc., via your computer. Compact speaker for base station opera-

tion. Height can be adjusted for your conve-

nience. Input impedance: 8 Max. input power: 5 W External speakers suitable for mobile oper-

ation. SP-12: Slim-type; 8 /3 W SP-10: Compact-type; 4 /5 W UT-102 VOICE SYNTHESIZER UNIT MB-62 MOBILE MOUNTING BRACKET MB-63 MOUNTING BRACKET Announces the receive frequency, mode and S-meter level in a clear, electronically-

generated voice in English (or Japanese). Mounts the transceiver main body, with or without the front panel, inside a vehicle. Metal plate for attaching the front panel to a wall or other such at surface. 91 MB-65 MOUNTING BASE MB-72 CARRYING HANDLE OPC-581/587 SEPARATION CABLE OPTIONS 17 Allows you to conveniently vehicle-mount the front panel of the IC-703. An MB-63 must be used in combination with the MB-

65. OPC-589 MICROPHONE ADAPTOR CABLE Convenient when carrying the transceiver. Provide front panel detached operation for mobile installations or compact transceiver operation. OPC-581: 3.5 m (11.5 ft) OPC-587: 5 m (16.4 ft) OPC-598 ACC 13-PIN CABLE OPC-599 ADAPTOR CABLE Conversion between 8-pin modular and 8-

pin metal connector for using a desktop mi-

crophone with the IC-703. Required when using the AT-180. 13-pin, ACC connector to 7-pin + 8-pin ACC connector. UT-106 DSP RECEIVER PS-125 DC POWER SUPPLY LC-156 MULTI-BAG (with controller case) Provides AF DSP functions such as noise reduction and auto notch. Built-in to some versions. Light weight switching regulator power sup-

ply. The OPC-1248 is necessary to use this power supply. Output voltage: 13.8 V Max. current drain: 25 A BP-228 Ni-Cd BATTERY PACK (9.6 V, 2800 mAh) Provides outdoor operation (max. output power 5 W). OPC-1248 DC POWER ADAPTOR CABLE Provides to connect PS-125. Connects 3-pin DC cable (OPC-1229) to 6-pin connector. 17 92 18 MENU GUIDE LOCK

+ power ON Initial set mode No. 1 Indication MAX POWSET MENU Y Z 2 3 4 5 6 7 8 9 PoSAVE MODE SIMPLE MODE MODE SELECT MODE POWSET BEEP BAND BEEP BEEP LEVEL BEEP LIMIT 10 CW NOR SIDE 11 SID-T LEVEL 12 SID-T LIMIT 13 SYNC TUNING 14 BACK LIGHT 15 KEY LIGHT 16 LIGHT TIMER 17 LED BRIGHT 18 18 AUTO OFF 19 20 21 22 CURRENT IP RF/SQL SUB DIAL OPT. FIL Description Max. output power setting Power save setting Simple mode setting Mode availability Power setting for mode Confirmation beeps Band edge beeps Beep level adjustment Beep audio level limit CW carrier point setting CW side tone level CW side tone level limit Frequency shift setting Display backlighting Key/switch backlighting Light timer setting LED brightness Automatic power OFF Current intercept point RF gain/squelch control Sub dial setting Optional filter selection Power OFF then ON to exit initial set mode. Indication No. 23 PEAK HOLD 24 QUICK SPLIT 25 SPLIT LOCK 26 SPL OFFSET 27 SCAN RESUME 28 SCAN SPEED 29 U/D SPEED 30 AM NB 31 32 33 34 35 PAD CH PWR ON CHK A-TUNE STRT PTT TUNE TUNER SW 36 9600 MODE 37 SPEECH LANG 38 SPEECH SPD 39 S-LVL SPCH 40 41 42 CI-V ADDRES CI-V BAUD CI-V TRN 43 CI-V 731 Description Peak meter hold setting Quick split function Split lock function Split offset frequency Scan resume condition Scanning speed

[UP]/[DN] speed Noise blanker in AM mode Available memo pads Power ON check function Auto tune start function PTT tune function Tuner switch condition Packet data speed Voice synthesizer lang. Voice synthesizer speed S-meter level speech CI-V address setting Data transfer rate CI-V transceive CI-V data length

*When 3 SIMPLE MODE is set to ON, box items are undisplayed. 93 MENU GUIDE 18 M1 SPL A/B XFC MENU M2 MW MCL V/M M3 FIL NB MET DISPLAY MENU M4 VOX COM AGC

(SSB/AM) M4 1/4 KEY AGC

(CW) M4 1/4 TON AGC

(RTTY) M4 1/4 AGC (SSB-D) MODE M4 VOX COM TON

(FM) DISPLAY MENU S1 S2 S3 S4 MW MPW MPR SCN PRI SEL V/M

(in memory mode) 7 ANF 14 NR 21 NRL DISPLAY G1 G2 G3 G4 BAND scope SWR Graph TX freq. Memory name DISPLAY DISPLAY For 1 sec. Quick set mode SSB/AM/FM No. mode CW mode RTTY mode SSB-D mode Q1 RF POWER RF POWER RF POWER RF POWER MENU Q2 MIC GAIN KEY SPEED RTTY REV CAR SIDE Q3 CARRIER Frq*1

*1SSB mode only CW REV Y M-CH Y 18 94 19 ABOUT CE INSTALLATION NOTES For amateur base station installations it is recom-

mended that the forwards clearance in front of the an-

tenna array is calculated relative to the EIRP (Effective Isotropic Radiated Power). The clearance height below the antenna array can be determined in most cases from the RF power at the antenna input terminals. As different exposure limits have been recommended for different frequencies, a relative table shows a guideline for installation considerations. Below 30 MHz, the recommended limits are specied in terms of V/m or A/m elds as they are likely to fall within the near-eld region. Similarly, the antenna may be physically short in terms of electrical length and that the installation will require some antenna matching de-

vice which can create local, high intensity magnetic elds. Analysis of such MF installations is best consid-

ered in association with published guidance notes such as the FCC OET Bulletin 65 Edition 97-01 and its annexes relative to amateur transmitter installations. The EC recommended limits are almost identical to the FCC specied uncontrolled limits and tables exist that show pre-calculated safe distances for different an-

tenna types for different frequency bands. Further in-

formation can be found at http://www.arrl.org/. Typical amateur radio installation Exposure distance assumes that the predominant ra-

diation pattern is forwards and that radiation vertically downwards is at unity gain (sidelobe suppression is equal to main lobe gain). This is true of almost every gain antenna today. Exposed persons are assumed to be beneath the antenna array and have a typical height to 1.8 m. The gures assume the worst case emission of con-

stant carrier. For the bands 10 MHz and higher the following power density limits have been recommended:

1050 MHz 2 W/sq m EIRP clearance heights by frequency band 1 Watts 10 Watts 25 Watts 100 Watts 1000 Watts 2.1 m 2.8 m 3.4 m 5 m 12 m Forward clearance, EIRP by frequency band 100 Watts 1000 Watts 10,000 Watts 100,000 Watts 2 m 6.5 m 20 m 65 m In all cases any possible risk depends on the transmit-

ter being activated for long periods. (actual recom-

mendation limits are specied as an average during 6 minutes) Normally the transmitter is not active for long periods of time. Some radio licenses will require that a timer circuit automatically cuts the transmitter after 12 minutes etc. Similarly some types of transmitter, SSB, CW, AM etc. have a lower average output power and the assessed risk is even lower. Versions of the IC-703 which display the CE symbol on the serial number seal, comply with the essential requirements of the European Radio and Telecommunication Terminal Directive 1999/5/EC. This warning symbol indicates that this equipment operates in non-harmonised fre-

quency bands and/or may be subject to li-

censing conditions in the country of use. Be sure to check that you have the correct ver-

sion of this radio or the correct programming of this radio, to comply with national licens-

ing requirement. 95 ABOUT CE 19 DECLARATION OF CONFORMITY We Icom Inc. Japan 1-1-32, Kamiminami, Hirano-ku Osaka 547-0003, Japan Declare on our sole responsibility that this equipment complies with the essential requirements of the Radio and Telecommunications Terminal Equipment Directive, 1999/5/EC, and that any applicable Essential Test Suite measurements have been performed. Kind of equipment: HF/50 MHz ALL MODE TRANSCEIVER Type-designation: i703 Version (where applicable):

This compliance is based on conformity according to Annex III of the directive 1999/5/EC using the following harmonised standards:

i) Article 3.1a EN 60950 + A11 ii) Article 3.1b EN 301489-1 and EN 301489-15 (or ETS 300 684) iii) Article 3.2 EN 301 783-2 iv) v) Dsseldorf 14th Mar. 2003 Place and date of issue Icom (Europe) GmbH Himmelgeister strae 100 D-40225 Dsseldorf Authorized representative name T. Maebayashi General Manager Signature Version and frequency coverage Europe (#02, #12) Receive Transmit 0.50029.999 MHz 50.00054.000 MHz 1.800 1.999 MHz 3.500 3.800 MHz 7.000 7.100 MHz 10.10010.150 MHz 14.00014.350 MHz 18.06818.168 MHz 21.00021.450 MHz 24.89024.990 MHz 28.00029.700 MHz 50.00052.000 MHz Italy (#10, #20) Receive Transmit 1.830 1.850 MHz 3.500 3.800 MHz 7.000 7.100 MHz 10.10010.150 MHz 14.00014.350 MHz 18.06818.168 MHz 21.00021.450 MHz 24.89024.990 MHz 28.00029.700 MHz 1.830 1.850 MHz 3.500 3.800 MHz 7.000 7.100 MHz 10.10010.150 MHz 14.00014.350 MHz 18.06818.168 MHz 21.00021.450 MHz 24.89024.990 MHz 28.00029.700 MHz 19 96 IC-703

#02, #12

(Europe) HF+50 M IC-703

#10, #20

(Italy) HF only

<Intended Country of Use>

GER FRA ESP SWE AUT NED POR DEN GBR BEL ITA FIN IRL LUX GRE SUI NOR

<Intended Country of Use>

GER FRA ESP SWE AUT NED POR DEN GBR BEL ITA FIN IRL LUX GRE SUI NOR A-6241H-1EX-q Printed in Japan 2003 Icom Inc. 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan