IC-910H Amature Scanning Transceiver Manual

 

INSTRUCTION MANUAL VHF/UHF ALL MODE TRANSCEIVER i910H IMPORTANT EXPLICIT DEFINITIONS READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the transceiver. SAVE THIS INSTRUCTION MANUAL. This manual contains important safety and operating in-

structions for the IC-910H. WORD R WARNING CAUTION NOTE DEFINITION Personal injury, fire hazard or electric shock may occur. Equipment damage may occur. If disregarded, inconvenience only. No risk of personal injury, fire or electric shock. PRECAUTIONS RWARNING HIGH VOLTAGE! NEVER attach an antenna or internal antenna connector during trans-

mission. This may result in an electrical shock or burn. R NEVER apply AC to the [DC13.8V] jack on the transceiver rear panel. This could cause a re or ruin the transceiver. Place unit in a secure place to avoid inadvertent use by children. During mobile operation, DO NOT operate the trans-

ceiver without running the vehicles engine. When the transceiver power is ON and your vehicles engine is OFF, the vehicles battery will soon become exhausted. R NEVER apply more than 16 V DC, such as a 24 V battery, to the [DC13.8V] jack on the transceiver rear panel. This could cause a re or ruin the transceiver. Make sure the transceiver power is OFF before start-

ing the vehicle. This will avoid possible damage to the transceiver by ignition voltage spikes. R NEVER let metal, wire or other objects touch any internal part or connectors on the rear panel of the transceiver. This may result in an electric shock. R NEVER expose the transceiver to rain, snow or any liquids. AVOID using or placing the transceiver in areas with temperatures below 10C (+14F) or above +60C

(+140F). Be aware that temperatures on a vehicles dashboard can exceed 80C (+176F), resulting in per-

manent damage to the transceiver if left there for ex-

tended periods. AVOID placing the transceiver in excessively dusty en-

vironments or in direct sunlight. AVOID placing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation. During maritime mobile operation, keep the transceiver and microphone as far away as possible from the mag-

netic navigation compass to prevent erroneous indica-

tions. BE CAREFUL! The heatsink will become hot when operating the transceiver continuously for long periods. BE CAREFUL! If a linear amplifier is connected, set the transceivers RF output power to less than the lin-

ear ampliers maximum input level, otherwise, the lin-

ear amplier will be damaged. Use Icom microphones only (supplied or optional). Other manufacturers microphones have different pin assignments, and connection to the IC-910H may damage the transceiver. Versions of the IC-910H which display the CE symbol on the serial number seal, comply with the European harmonised standard ETS300 684

(EMC product standard for Commercially Available Amateur Radio Equipment). i TABLE OF CONTENTS 1 IMPORTANT ........................................ i EXPLICIT DEFINITIONS ..................... i PRECAUTIONS ................................... i 1 TABLE OF CONTENTS ................ 1 2 PANEL DESCRIPTION ........... 213 I Front panel ..................................... 2 I Function display ........................... 10 I Rear panel .................................... 12 3 INSTALLATION AND CONNECTIONS ................... 1417 I Unpacking .................................... 14 I Grounding ..................................... 14 I Selecting a location ...................... 14 I Antenna connection ..................... 14 I Required connections ................... 15 I Advanced connections ................. 16 I Power supply connections ............ 17 4 BASIC OPERATION ............. 1825 I Initial settings ................................ 18 I When rst applying power

(CPU resetting) ............................. 18 I MAIN and SUB bands .................. 19 I Operating band selection ............. 20 I VFO description ............................ 21 I Frequency setting ......................... 22 I SUB band OFF ............................. 24 I SUB tuning dial ............................. 24 I Dial lock function .......................... 25 5 RECEIVE AND TRANSMIT .. 2639 I Functions for receive .................... 26 I RIT function .................................. 27 I IF shift function ............................. 27 I AGC time constant ....................... 28 I AFC function ................................. 28 I FM center indicator ....................... 28 I Attenuator ..................................... 29 I Simple band scope ....................... 29 I Noise blanker ............................... 30 I Tone squelch operation ................ 30 I Optional DSP functions ................ 31 I Functions for transmit ................... 32 I Transmit via microphone ............... 32 I Indications during transmit ........... 32 I FM mode operation ...................... 33 I VOX operation .............................. 33 I Repeater operation ....................... 34 I SSB mode operation .................... 36 I Speech compressor ..................... 36 I Split frequency operation .............. 37 I Full duplex operation .................... 37 I Connections for CW ..................... 38 I CW mode operation ..................... 38 6 MEMORY OPERATION ........ 4044 I Memory channels ......................... 40 I Operation on a memory channel .. 40 I Programming in VFO mode .......... 41 I Programming in memory mode .... 41 I Blank channels ............................. 42 I Frequency transferring ................. 42 I Memory clearing ........................... 43 I Call channels ................................ 43 I Memo pads ................................... 44 7 SCANS ................................. 4547 I Scan types .................................... 45 I Preparation ................................... 45 I Programmed scan operation ........ 46 I Memory scan operation ................ 46 I Memory select scan ..................... 47 I Tone scan ..................................... 47 8 SATELLITE OPERATION ..... 4851 I Satellite communications outline .. 48 I Satellite notes ............................... 48 I Entering into the satellite mode .... 48 I Setting the satellite VFO ............... 49 I Tracking selection ......................... 49 I Preparation ................................... 50 I Satellite operation ......................... 51 I Satellite memory .......................... 51 9 DATA COMMUNICATION ..... 5254 I Functions for AFSK ...................... 52 I Connections for AFSK .................. 52 I Operating mode notes .................. 53 I Operating frequency notes ........... 53 I AFSK operation ............................ 53 I Setting the ACC socket ................ 54 10 SET MODE ........................... 5569 I Set mode description ................... 55 I General set mode ......................... 56 I FM set mode ................................ 60 I SSB/CW set mode ....................... 62 I Scan set mode ............................. 64 I Memo pad set mode ..................... 64 I Compressor set mode .................. 64 I VOX set mode .............................. 65 I Attenuator set mode ..................... 65 I Transmit set mode ........................ 66 I NR set mode ................................ 67 I SWP set mode ............................. 67 I RIT/SHIFT set mode .................... 68 I Speech set mode ......................... 69 11 OPTION INSTALLATIONS ... 7076 I Internal view ................................. 70 I Opening the transceivers case .... 71 I UT-102 VOICE SYNTHESIZER UNIT .............................................. 71 I UT-106 DSP UNIT .......................... 72 I UX-910 1200 MHz BAND UNIT ........ 73 I CR-293 HIGH STABILITY CRYSTAL UNIT .............................................. 74 I FL-132/FL-133 CW NARROW FILTER ........................................... 75 12 MAINTENANCE ................... 7677 I Troubleshooting ............................ 76 I Fuse replacement ......................... 77 I CPU resetting ............................... 77 13 CONTROL COMMAND ........ 7879 I Remote jack (CI-V) information .... 78 14 SPECIFICATIONS ....................... 80 15 OPTIONS ..................................... 81 SUPPLIED ACCESSORIES The transceiver comes with the following accessories. Qty. q DC power cable (OPC-657A) ............................ 1 w Hand microphone (HM-12) ................................ 1 e Spare fuses (FGB 30 A) .................................... 2 r Spare fuse (FGB 4 A) ........................................ 1 q w e r 1 2 PANEL DESCRIPTION I Front panel o !0 !1 !2 !3 q w e r t y u i q POWER SWITCH [POWER]

Push momentarily to turn power ON. Push for 2 sec. to turn power OFF. w TRANSMIT SWITCH [TRANSMIT]

Push to select transmitting or receiving. e COMPRESSION SWITCH [COMP] (p. 36) Push to switch the speech compressor function ON and OFF. The speech compressor increases average RF output power, improving signal strength and readability in SSB. r VOX SWITCH [VOX] (p. 33) Push to switch the VOX function ON and OFF. The VOX (Voice-Operated Transmission) function tog-

gles between transmit and receive with your voice. This function provides an opportunity to input log entries into your computer, etc., while operating. t HEADPHONE JACK [PHONES]

Accepts headphones. Output power: 5 mW with 816 load. When headphones are connected, the internal speaker or connected external speaker does not function. The MAIN and SUB band audio can be mixed or sepa-

rated when using stereo headphones according to set mode settings. (p. 57) y MICROPHONE CONNECTOR [MIC]

Accepts the supplied or optional microphone. See p. 81 for appropriate microphones. See p. 15 for microphone connector information. u MIC GAIN CONTROL [MIC GAIN]

Adjusts microphone input gain. Recommended level for an Icom microphone MIC GAIN Decreases Increases How to set the microphone gain. Set the [MIC] control so that the [MAIN]/[SUB] indicator (ALC indicator) some times lights brighter during normal voice transmission in SSB mode. i RF POWER CONTROL [RF PWR]

Continuously varies the RF output power from min-

imum to maximum. 144 MHz band 5100 W 430(440) MHz band 575 W 1200 MHz band 110 W (optional UX-910) RF PWR Decreases Increases 2 o MAIN BAND INDICATOR [MAIN]

Lights green while the squelch is opened or a sig-

nal is received on the MAIN band; lights red while transmitting on the MAIN band. While transmitting, the indicator also shows ALC con-

dition. Brightness increases more than usual when the ALC function is activated. Flashes when an off-frequency signal is received and the FM center detector is activated. (p. 28)

!0 RF GAIN CONTROL/SQUELCH CONTROL

[RF/SQL] (outer control) Adjusts the RF gain and squelch threshold level for the MAIN band. 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 squelch threshold position for SSB/CW mode can be set from 12 or 13 oclock position in SSB/CW set mode. (p. 62) The control can be set as Auto (RF gain control in SSB and CW; squelch control in FM) or squelch control (RF gain is xed at maximum) in set mode as follows. (p. 56) MODE AUTO SSB, CW RF GAIN FM SQL SET MODE SETTING SQL SQL SQL RF GAIN + SQL RF GAIN + SQL SQL When setting as RF gain/squelch control Noise squelch (FM mode) Recommended level Maximum RF gain S-meter squelch Squelch is open. RF gain adjustable range (SSB, CW modes) When functioning as RF gain control

(Squelch is xed open; SSB, CW only) Maximum RF gain Adjustable range Minimum RF gain PANEL DESCRIPTION 2 When functioning as squelch control

(RF gain is xed at maximum.) Noise squelch threshold Noise squelch Squelch is open. S-meter squelch threshold S-meter squelch Shallow Deep

!1 AF CONTROL [AF] (inner control) Varies the audio output level from the speaker for the MAIN band. AF RF/SQL Decreases Increases No audio output Max. audio output

!2 SUB BAND INDICATOR [SUB]

Lights green while the squelch is opened or a signal is received on the SUB band; lights red while trans-

mitting in satellite operation.

!3 RF GAIN CONTROL/SQUELCH CONTROL

[RF/SQL] (outer control) Adjusts the RF gain and squelch threshold level for the SUB band. The squelch removes noise output from the speaker (closed condition) when no signal is received. 3 2 PANEL DESCRIPTION I Front panel (continued)

!4

!5 !6 !7 !8 !9 @0

@1

@2

@3

!4 AF CONTROL [AF] (inner control) Varies the audio output level from the speaker for the SUB band.

!5 SETMENU SWITCH [SETMENU] (p. 55) Push this switch then one of [FM],

[SSB/CW], [RIT], [SCAN], [NR], [TRANS-

MIT], [COMP], [VOX], [ATT], [SWP],

[MPW] or [SPCH] to enter the indepen-

dent item set mode. Push for 1 sec. to enter the set mode for commonly used item settings. For 1 sec.

!6 ATTENUATORPRE-AMP SWITCH [ATTP.AMP]

Push to switch the attenuator function ON and OFF. (p. 29) Use this function to protect from signal distortion from exces-

sively strong signals. The attenuation level is independently ad-

justable for 144 MHz or 430(440) MHz band in the ATT set mode. The optional 1200 MHz band attenuation level is xed and is approx. 20 dB. (p. 65) Push for 1 sec. to switch the connected pre-amplier ON and OFF, when an op-

tional pre-amplifier unit, AG-25, AG-35 and/or AG-1200, is connected. (p. 16) For 1 sec. DO NOT connect any equipment, such as an SWR or power meter between the transceiver and pream-

plifier. In such case, the preamplifier may not acti-

vate properly.

!7 AUTO FREQUENCY CONTROL/NOISE BLANKERNOISE REDUCTION SWITCH

[AFC/NBNR]

During FM/FM narrow mode operation, push to switch the AFC (Automatic Fre-

quency Control) function ON and OFF.

(p. 28) Automatically tunes the operating frequency, when an off-frequency signal is received, in 100 kHz steps. This function also follows the signal even if the frequency is shifted. During SSB or CW mode operation, push to switch the noise blanker function ON and OFF. (p. 30) Reduces pulse-type noise, such as ignition noise from a vehicle. Push for 1 sec. to switch the noise reduc-

tion function ON and OFF when an op-

tional DSP unit, UT-106, is installed.

(p. 31) Reduces unwanted noise and pulls out the desired signal only for clear readability. For 1 sec. 4

!8 AUTO GAIN CONTROLAUTO NOTCH FILTER

@2 BRAKE ADJUSTMENT SCREW PANEL DESCRIPTION 2 Adjust the tension of the tuning dial. Rotate clockwise to increase the tension; counterclock-

wise to decrease the tension. Brake adjustment screw

@3 MEMORY CHANNEL UP/DOWN SWITCHES

[YY UP]/[DOWN ZZ] (p. 40) Push [Y UP] to change the memory channel up; push [DOWN Z] to change the memory channel down. Memory channel changes continuously while holding either switch. Memory channels can be selected both in VFO and memory modes. or or For 1 sec. SWITCH [AGCANF]

Push to switch the time constant of the automatic gain control to SLOW and FAST for the MAIN band.* (p. 28) SLOW selection (FAGC disappears) during SSB (USB or LSB) operation, FAST selection

(FAGC appears) during CW, data operation and while tuning with fast tuning dial rotation are recommended.

*The AGC time constant can be selected on the MAIN band only. FAST selection is xed on the SUB band. Push for 1 sec. to switch the automatic notch filter function ON and OFF when the optional DSP unit, UT-106, is in-

stalled. (p. 31) Reduces interference signals such as beat, RTTY or CW signals and the notch frequency automatically follows the interfering signal. For 1 sec.

!9 kHz/MHzTUNING STEP SELECTION SWITCH

[kHz/MHz] (p. 22) Push to select tuning step for the tuning dial or scanning from 1 kHz, 1 MHz step and regular tuning step* in sequence ZZ appears above the 1 kHz or 1 MHz digit when 1 kHz or 1 MHz tuning step is selected, respectively.

*The regular tuning step is selected for each operating mode as follows. Push for 1 sec. to enter the regular tun-

ing step selection mode. The tuning step can be selected for each op-

erating mode independently. SSB/CW mode: 1, 10, 50 and 100 Hz step;

FM mode: 0.1, 5, 6.25, 10, 12.5, 20, 25 and 100 kHz step can be selected by rotating the tuning dial. For 1 sec.

@0 SPEECHLOCK SWITCH [SPCHLOCK]

Announces the receiving signal strength and/or selected readout frequency when the optional UT-102 is installed. (pgs. 69, 71) Push for 1 sec. to switch the tuning dial lock function ON and OFF to prevent ac-

cidental setting changes. (p. 25) For 1 sec.

@1 TUNING DIAL Changes the displayed frequency, selects set mode items, etc. 5 2 PANEL DESCRIPTION I Front panel (continued)

@8

@7

@6

@5

@4

@4 RIT CONTROL [RIT] (p. 27)

@6 SATELLITE SWITCH [SATELLITE]

Shifts the receive frequency without changing the transmit frequency for the MAIN band only while the RIT function is activated. SSB/CW mode : 1.0 kHz* in 10 Hz step

: 5.0 kHz* in 50 Hz step FM mode

*For 1200 MHz band; 2.0 kHz and 10.0 kHz, respec-

tively when the optional UX-910 is installed. By using the Sub dial function, the RIT control can be used as the MAIN/SUB tuning dial or the SUB band IF shift control. See page 24 for details.

@5 IF SHIFT CONTROL [SHIFT]

Shifts the center frequency of the receivers IF pass-

band within 1.2 kHz range. By using the Sub dial function, the IF shift control can be used as the MAIN/SUB tuning dial or the SUB band IF shift control. See page 24 for details. What is the Sub dial function?

The [RIT] and [SHIFT] controls are used for RIT and IF shift controls for the MAIN band by default. However, the Sub dial function assigns these controls as the MAIN/SUB tuning dial or the SUB band IF shift control. (p. 24, 68) RIT SHIFT RIT SHIFT RIT SHIFT Push to enter satellite mode (RX on MAIN, TX on SUB band). Push again to return to the condition before entering into the satellite mode. Push to enter satellite mode using the current operating frequencies when pushing for 1 sec. To change the normal and reverse satellite operations, push [F-INP/ENT] for 1 sec. For 1 sec. For 1 sec.

@7 RIT SWITCH [RIT] (p. 27) Push to switch the RIT control activity ON and OFF. RIT indicator appears when the RIT func-

tion is in use. Push for 1 sec. to switch the Sub dial function ON and OFF. RIT indicator flashes and the [RIT] and

[SHIFT] controllers acts as the controllers specied in the RIT/SHIFT set mode. (p. 68) For 1 sec.

@8 KEYPAD Numeral and other function keys for tuning and ac-

tivating functions. See the table at right. Max. counter-

clockwise position Center position Max. clockwise position 6 PANEL DESCRIPTION 2 Switch Switch action when pushed Switch action when pushed for 1 sec. Enters numeral 1 when entering an operating frequency. (p. 23) Switches between VFO and memory mode.

(p. 40) Enters numeral 2 when entering an operating frequency. (p. 23) Equalizes the condition of the VFO A and B.

(p. 21) Enters numeral 3 when entering an operating frequency. (p. 23) Switches between VFO A and B during VFO mode operation. (p. 21) Shows 10 Hz and 1 Hz digits of operating fre-

quency on both the MAIN and SUB bands while pushing and holding. (p. 22) Enters numeral 4 when entering an operating frequency. (p. 23) Stores the set conditions into a memory channel.

(p. 41) Enters numeral 5 when entering an operating frequency. (p. 23) Clears stored contents of memory channel to be a blank channel. (p. 43) Enters numeral 6 when entering an operating frequency. (p. 23) Transfers the contents of a memory channel into either the VFO A or B. (p. 42) Enters numeral 7 when entering an operating frequency. (p. 23) Opens squelch for monitoring the operating or transmit frequency, and the frequency indication automatically changes to transmit frequency in the case of duplex or split operation. (p. 34) Enters numeral 8 when entering an operating frequency. (p. 23) Stores the displayed operating conditions into MEMO PAD channel (p. 44) Enters numeral 9 when entering an operating frequency. (p. 23) Re-calls the contents in the MEMO PAD channel.

(p. 44) Enters decimal point . for entering below the MHz digits when entering an operating fre-

quency. Starts and cancels scanning function. (p. 46) Turns OFF the SUB band frequency indication during satellite operation. In this case, only the MAIN band frequency can be tuned by rotating the tuning dial. (p. 49) Enters numeral 0 when entering an operating frequency. (p. 23) Switches sweep function for the bandscope ON and OFF. (p. 29) Turns OFF the MAIN band frequency indication during satellite operation. In this case, only the SUB band frequency can be tuned by rotating the tuning dial. (p. 49) Enables operating frequency entering from the keypad. See page 23 for details. Starts and cancels tone scan when the repeater tone or tone squelch is activated in FM (narrow) operation. (p. 47) Used to change memory channel during memory mode operation by rotating the tuning dial while pushing and holding. (p. 40) 7 2 PANEL DESCRIPTION I Front panel (continued)

#5 #4 #3 #2 #1 #0 @9

@9 SPLITDUPLEX SWITCH [SPLITDUP]

#2 TONE SWITCH [TONE]

Push to turn the split function, with the VFO A and B, ON and OFF. (p. 37) The split operation is not available for the SUB band. Push for 1 sec. to select the duplex (re-

peater) direction or to turn the function OFF. (p. 34) The duplex operation is not available for the SUB band. For 1 sec.

#0 SSB/CWCW-NARROW SWITCH

[SSB/CWCW-N]

Push to switch the operating mode be-

tween SSB and CW. (p. 23) Push for 1 sec. to switch the operating mode between USB and LSB or between CW and CW narrow during SSB or CW mode, respectively. For 1 sec.

#1 FMFM-NARROW SWITCH [FMFM-N] (p. 23) Push to switch the operating mode be-

tween FM and FM repeater mode. The duplex operation can be made in MAIN band only, it cannot be operated in SUB band. Push for 1 sec. to switch the operating mode between FM and FM-N (FM nar-

row). The FM-N mode cannot be selected in 1200 MHz band operation. For 1 sec. 8 Push to turn the tone encoder function ON and OFF in FM mode. (p. 31; except for European version) T indicator appears in the display when the tone encoder is activated. Push to transmit a 1750 Hz repeater tone in FM mode for European version. Available repeater tones

(Unit: Hz) 67.0 69.3 71.9 74.4 77.0 79.7 82.5 085.4 088.5 091.5 094.8 097.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5 203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3 254.1

#3 MAIN/SUB CHANGEBAND SWITCH

[M/SBAND]

Push to replace the MAIN bands fre-

quency and mode with the SUB bands.

(p. 19) Push for 1 sec. to change the operating band during single band operation or when the optional band unit, UX-910, is installed. (p. 20) For 1 sec. PANEL DESCRIPTION 2

#4 SUBSUB OFF SWITCH [SUBSUB OFF]

Push to enable the SUB band control from the tuning dial, keypad, etc. (p. 19) SUB indicator appears. Push for 1 sec. to turn the SUB band readout indication ON and OFF. (p. 24) For 1 sec.

#5 CALLTONE SQUELCH SWITCH [CALLT-SQL]

Push to select the call channel of the op-

erating band. The call channel can be se-

lected from both the VFO and memory mode operation. (p. 43) For 1 sec. Push for 1 sec. to turn the tone squelch function ON and OFF during FM mode operation. (p. 30) T-SQL indicator appears when the tone squelch is activated. 9 2 PANEL DESCRIPTION I Function display w e r t y u FMNUSBUSBLSB CW N DUP SPLIT SPLIT RITRIT VFO A VFO B MEMO q

@4

@6

@7

@8 T-SQL ATT P.AMP AFC NB FAGCAGC NR ANFANF S 1 3 5 7 9 60dB 20 40 BLANK 9600 SET SWP SCAN COMPMP VOX OVEROVER

@3

@2

@1

@0

!9

!8

!7

!6

!4!5

!3

@5 q w e y u NOR SUB NFM USB LSB CW N RIT VFO A VFO B MEMO T-SQSQL S 1 3 5 7 9 ATT P.AMP

.AMP AFCAFCNBNB FAGCAGC NR ANF BLBLANKNK 20 40 60dB OVEROVER SWP SCAN SATL REV LOCK i o

!0

!1

!2 i

!0

!5

!6

@3

@4

@2

@1

@0

!9

!8

!7 o q FREQUENCY READOUTS (p. 22) Shows the operating frequency. Setting item name is indicated during set mode. (p. 55) w MODE INDICATOR (p. 23) Shows the selected operation mode. e TUNING STEP INDICATOR (p. 22) Appears when the 1 kHz or 1 MHz tuning step is se-

lected. r DUPLEX INDICATOR (p. 34) Either DUP or DUP+ appears during duplex (re-

peater) operation. t SPLIT INDICATOR (p. 37) Appears during split operation. y RIT INDICATOR (p. 27) Appears while the RIT function is activated. Flashes while the SUB dial function is activated. u VFO INDICATOR (p. 21) Either VFO A or VFO B appears during VFO opera-

tion. i MEMORY MODE INDICATORS/MEMORY CHANNEL NUMBER READOUTS (p. 40) The memory mode indicator appears during mem-

ory mode operation and the memory channel num-

ber readout shows the selected memory channel number during both the memory and VFO mode op-

eration. Memory channel number readout In addition to the memory channel number indication, the memory channel number readout indicates 10 Hz and 1 Hz digits of operating frequency while rotating the tuning dial in SSB or CW mode with 10 or 1 Hz tuning step. After 2 sec. from tuning dial operation, the readout indicates the memory channel number. o AUTO NOTCH FILTER INDICATOR (p. 31) Appears when the optional DSP unit, UT-106, is in-

stalled, and the ANF (Automatic Notch Filter) func-

tion is activated.

!0 BLANK INDICATOR (p. 42) Appears when the selected memory channel has not been programmed or has been cleared. 10 PANEL DESCRIPTION 2

!1 DATA TRANSMISSION SPEED INDICATOR

@4 TONE SQUELCH INDICATOR (pgs. 30, 34)

(p. 52) Appears when 9600 bps speed is selected for packet transmission. T appears when the tone encoder function is acti-

vated; T-SQL appears when the tone squelch func-

tion is activated.

!2 SPEECH COMPRESSOR INDICATOR (p. 36)

@5 SUB INDICATOR (p. 19) Appears when the speech compressor is activated. Appears when the SUB band access is enabled.

!3 SET INDICATOR (p. 55) Appears when [SET] is pushed. Disappears after any switch is pushed.

!4 VOX INDICATOR (p. 33) Appears when the VOX function is activated.

@6 SATELLITE INDICATOR (p. 49)

-

NOR SATL Appears while satellite operation mode is selected.

: Satellite operation with normal mode is selected.

: Satellite operation with reverse mode is selected. SATL REV

-

!5 SWEEP INDICATOR (p. 29)

@7 REMOTE INDICATOR (p. 78) Flashes while the simple bandscope function is ac-

tivated. Appears when the transceiver is controlled remotely via the optional CI-V level converter, CT-17.

!6 SCAN INDICATOR (p. 46) Flashes while scanning.

@8 LOCK INDICATOR (p. 25) Appears when the dial lock function is activated.

!7 NOISE REDUCTION INDICATOR (p. 31) Appears when the optional DSP unit, UT-106, is in-

stalled and the noise reduction is activated.

!8 AGC TIME CONSTANT INDICATOR (p. 28) Appears when the FAST AGC time constant is se-

lected; disappears when the SLOW AGC time con-

stant is selected.

!9 NOISE BLANKER INDICATOR (p. 30) Appears when the noise blanker function is acti-

vated.

@0 AUTO FREQUENCY CONTROL INDICATOR

(p. 28) Appears when the AFC (Automatic Frequency Con-

trol) function is activated.

@1 PRE-AMP INDICATOR (p. 16) Appears when the optional pre-amplifier unit, AG-25, AG-35 and/or AG-1200, is connected and the pre-amplier function is activated.

@2 ATTENUATOR INDICATOR (p. 29) Appears when the attenuator is activated.

@3 MULTI-FUNCTION BAR METER Shows the receiving signal strength as an S-

meter while receiving. Peak hold function is avail-

able and can be switched ON and OFF in regular set mode. (pgs. 26, 56) Shows the relative transmit output power level as an RF power indicator during transmit. (p. 32) Shows signal availability in the sweeping band, and the M indicator indicates the center of the sweeping frequency band. 11 2 PANEL DESCRIPTION I Rear panel q w e

!2

!1

!0 o rtyui q 430(440) MHz ANTENNA CONNECTOR (p. 15) Accepts a 50 antenna with a type-N connector. w DC POWER SOCKET [DC 13.8V] (p. 17) Accepts 13.8 V DC through the supplied DC power cable (OPC-657A). Rear panel view _

+

u KEY JACK [KEY] (p. 15) Accepts a paddle, a straight key or external elec-

tronic keyer with 18 inch standard plug.

(+)

(_)

(dot)

(com)

(dash) e 144 MHz ANTENNA CONNECTOR (p. 15) Accept a 50 antenna with a PL-259 connector. i SUB BAND DATA SOCKET [DATA (SUB)]

o MAIN BAND DATA SOCKET [DATA (MAIN)]

r SUB BAND EXTERNAL SPEAKER JACK

[SP (SUB)]

t MAIN BAND EXTERNAL SPEAKER JACK

[SP (MAIN)] (p. 16) Accepts a 48 speaker. By connecting an external speaker for each or both jacks, the audio for both the MAIN and SUB bands is output as follows. No SP (MAIN) SP (SUB) Both MAIN AF Int. SP Ext. SP Int. SP SUB AF Int. SP Ext. SP Ext. SP Ext. SP (MAIN) Ext. SP (SUB) y 1200 MHz ANTENNA CONNECTOR (p. 15) Available when the optional 1200 MHz band unit is installed. Accepts a 50 antenna with a type-N connector.

(p. 13) 6-pin mini plug DIN jack to connect a TNC, etc. for high speed data communications. Simultaneous data communications are provided by equipping independent data sockets for both MAIN and SUB bands.

!0 ACCESSORY SOCKET [ACC(1)]

Enables connection of external equipment such as a TNC for data communications, etc. See the right table for socket information.

!1 CI-V REMOTE CONTROL JACK [REMOTE]

(p. 78) Designed for use with a personal computer via the optional CT-17 for remote control of transceiver functions.

!2 GROUND TERMINAL [GND] (p 14) Connect this terminal to a ground to prevent electri-

cal shocks and other problems. 12 D ACC SOCKETS ACC(1) Socket Pin No. Pin Name Description Specication PANEL DESCRIPTION 2 2 8 1 4 6 5 7 3 1 2 3 4 5 6 7 8 NC No connection. GND Connect to ground. SEND MOD AF SQLS 13.8 V Input terminal to transmit the trans-

ceiver in relation to the external equip-

ment. (Grounded: transmits) Input terminal for the modulation cir-

cuit. Output terminal for AF signals from the AF detector circuit. Output level is xed, regardless of [AF] control. Output terminal for squelch condition

(Open/Close). Outputs grounded level signal when squelch is opened. Output terminal for 13.8 V DC, in rela-

tion to the [POWER]. ALC Input terminal for ALC control.

: 0.5 to +0.8 V

: Less than 20 mA

: Less than 200 mA Transmit voltage Output current Input current (Tx) Output impedance : 10 k Input level Output impedance : 4.7 k Output level

: 100 mV rms

: 100300 mV rms Squelch open Squelch close

: Less than 0.3 V/5 mA

: More than 6.0 V/100 A Output current

: Less than 1 A Input impedance Control voltage

: More than 10 k

: 4 to 0 V D DATA SOCKETS DATA Socket Pin No. Pin Name DATA IN 1 Input terminal for data (common for both 1200 and 9600 bps) Description q e t w r y 2 3 4 5 6 GND Ground line for the DATA IN, DATA OUT and AF OUT. PTTP Transmits when this terminal is grounded. DATA OUT Received data output terminal for 9600 bps operation. AF OUT Received data output terminal for 1200 bps operation. SQL Output terminal for squelch condition (Open/Close). Outputs grounded level signal when squelch is opened, +8 V level signal when squelch is closed. 13 3 INSTALLATION AND CONNECTIONS I 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-910H, see Supplied acces-

sories on p. 1 of this manual. I 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]

terminal to a gas or electric pipe, since the connec-

tion could cause an explosion or electric shock. I 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 electro-magnetic sources. The base of the trans-

ceiver has an ad-

justable stand for desk-

top use. Set the stand to depending on your operating conditions. I 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 TYPE-N CONNECTOR INSTALLATION EXAMPLE q w e r 30 mm Coupling ring 10 mm (soft solder) the coupling ring the cable Slide down. Strip jacket and soft solder. 10 mm Soft solder 12 mm solder solder Strip the cable as shown at left. Soft solder the center conductor. Slide the connector body on and solder it. Screw the coupling ring onto the connector body. Nut Rubber gasket 15 mm Washer Clamp Center conductor 3 mm 6 mm Solder hole No space q w e r Be sure the center conductor is the same height as the plug body. the nut, Slide rubber gasket and clamp over the coaxial cable, then cut the end of the cable evenly. Strip the cable and fold the braid back over the clamp. Soft solder the center conductor. Install the center conductor pin and solder it. Carefully slide the plug body into place aligning the center conductor pin on the cable. Tighten the nut onto the plug body. 30 mm 98 in 10 mm 38 in 12 mm 116 in 14 INSTALLATION AND CONNECTIONS 3 I Required connections Front panel HEADPHONES Input impedance:

Audio output power:

816 5 mW with 8 load Output power may differ according to the headphone HM-12 HAND MICROPHONE SM-20 DESKTOP MICROPHONE (optional) MICROPHONE CONNECTOR (Front panel view) q w e i r u y t q MIC (Microphone input) w +8V (Max. 8 V DC 10 mA) e MIC U/D (Frequency up/down) r SQL S (Squelch switch) t PTT y GND (PTT ground) u GND (Microphone ground) i AF OUT (varies with [AF]) CAUTION: DO NOT short pin 2 to ground as this can damage the internal 8 V regulator. DC voltage is applied to pin 1 for microphone operation. Take care when using a non-Icom microphone. Rear panel

[430(440)MHz ANT]

(p. 14) DC POWER SUPPLY (p. 17)

[144MHz ANT] (p. 14) _

+

13.8 V DC More than 25 A GROUND (p. 14)

[1200MHz ANT] (p. 14)

[KEY] jack (p. 38)

+

_

(dot)

(com)

(dash) Required for optional UX-910 operation. 15 3 INSTALLATION AND CONNECTIONS I Advanced connections Front panel MB-23 CARRYING HANDLE Rear panel PREAMP (p. 59)

(144 MHz/430(440) MHz/1200 MHz)

: AG-25 144 MHz 430(440) MHz : AG-35 1200 MHz

: AG-1200 External all-weather, mast mounting preamplifiers are available. CAUTION: NEVER connect equipment

(i.e. power, SWR meter) between transceiver and preamplifier. 430(440) MHz 1200 MHz (optional) 144 MHz EXTERNAL SPEAKER

(MAIN/SUB) (p. 12) icom sp-7 Use 48 speakers. MAIN SUB MAIN SUB

[REMOTE] (p. 78) CT-17 Used for computer control and transceive operation. ACC SOCKETS

(pgs. 13, 52) DATA SOCKETS

(MAIN/SUB) (pgs. 13, 52) Used for external equipment control. 16 I Power supply connections Use an optional DC power supply with a 25 A capacity and above when operating the transceiver with AC power. Refer to the diagrams below. INSTALLATION AND CONNECTIONS 3 CAUTION: Before connecting the DC power cable, check the following important items. Make sure:

The [POWER] switch is OFF. Output voltage of the power source is 1215 V when you use a non-Icom power supply. DC power cable polarity is correct. Red Black

: positive + terminal

: negative _ terminal CONNECTING A DC POWER SUPPLY AC outlet A DC power supply Supplied DC power cable IC-910H 13.8 V DC 25 A Black _ Red

+

AC cable CONNECTING A VEHICLE BATTERY 24V NEVER connect to a 24 V battery. Ciga NEVER use the cig-

arette lighter socket as a power source. IC-910H Grommet NOTE: Use terminals for the cable connections.

+ red Crimp _ black 12 V battery Solder Supplied DC power cable 17 4 BASIC OPERATION I Initial settings After resetting the transceiver, set controls and switches as shown in the gure below. CCW : Max. counterclockwise

[AF] (MAIN band):

CCW

[RF/SQL] (MAIN band):

12 oclock

[POWER]: OFF

[SATELLITE]: OFF

[TRANSMIT]: OFF

[COMP]: OFF

[VOX]: OFF

[AF] (SUB band):

CCW

[RIT]: OFF

[SHIFT]: 12 oclock

[RF/SQL]: (SUB band) 12 oclock

[MIC]: CCW

[SET]: OFF

[AFC/NB]: OFF

[RIT]: 12 oclock

[AGC]: OFF

[ATT(P.AMP)]: OFF

[RF PWR]: CCW Turn power ON, then check the display. If any of the fol-

lowing indicators appear, turn them OFF as follows:

Quick tuning step indicator M : Push [kHz/MHz]. RIT indicator RIT Split indicator SPLIT

: Push [RIT].

: Push [SPLIT]. I When rst applying power (CPU resetting) Before rst applying power, make sure all connections required for your system are complete by referring to Chapter 3. Then, reset the transceiver using the fol-

lowing procedure. FM VFO A q Make sure the transceiver power is OFF. w While pushing [MW 4] and [M-CL 5], push

[POWER] to turn power ON. The internal CPU is reset. The transceiver displays its initial VFO frequencies when resetting is complete.

[POWER]

[MW 4] [M-CL 5]

S 1 3 5 7 9 20 40 60dB FM VFVFO A S 1 3 5 7 9 2020 4040 60dB60dB Resetting CLEARS all programmed contents in memory channels and returns programmed values in set mode to default values. 18 BASIC OPERATION 4 MAIN band display FM VFO A S 1 3 5 7 9 20 40 60dB FM VFVFO A S 1 3 5 7 9 20 40 60dB60dB SUB band display I MAIN and SUB bands The IC-910H has dual bands: 144 MHz and 430(440) MHz. These bands can be assigned to the MAIN and SUB bands for operating convenience. Each MAIN and SUB bands have independent fea-

tures. The MAIN band is the operation for both transmit and receive, and is displayed in the upper area of the func-

tion display. The SUB band is the operation for only re-

ceive, and is displayed in the lower area of the function display. Simultaneous receive on both the MAIN and SUB bands is possible, however the transmission can only be transmitted on the MAIN band not on the SUB band. In the case of satellite operation mode, the SUB band is used for the transmission band. Exchanging the MAIN and SUB bands The function display shows both the MAIN and SUB band frequencies and both bands can receive signals simultaneously. Assign 144 MHz or 430(440) MHz band, whichever band you want to transmit or be called on, as the MAIN band. Push [M/S] to exchange the MAIN and SUB bands. MAIN band display FM VFO A FM VFO A S 1 3 5 7 9 20 40 60dB S 1 3 5 7 9 20 40 60dB FM VFVFO A FM VFVFO A S 1 3 5 7 9 2020 4040 60dB60dB S 1 3 5 7 9 2020 4040 60dB60dB SUB band display Accessing the SUB band Normally, any operations, such as tuning, operating mode selection, memory channel selection and pro-

gramming, etc., are performed on the MAIN band. However, these operations can be performed on the SUB band by using the SUB band access capability. Push [SUB] to switch the SUB band access capa-

bility ON and OFF. SUB indicator appears while the SUB band access ca-

pability is activated. Even during SUB band access, transmission cannot be made on the SUB band. FM VFO A FM VFO A S 1 3 5 7 9 20 40 60dB S 1 3 5 7 9 20 40 60dB FM VFVFO A SUB FM VFVFO A S 1 3 5 7 9 2020 4040 60dB60dB S 1 3 5 7 9 2020 4040 60dB60dB 19 4 BASIC OPERATION I Operating band selection (optional UX-910 is required) The IC-910H can be used on the additional 1200 MHz band with the optional UX-910. The operating band can be selected by pushing [M/SBAND] for 1 sec.

[SUB]

[M/SBAND]

Selecting on the MAIN band q Push [SUB] to cancel the SUB band access, if re-

quired. w Push [M/SBAND] for 1 sec. to select operating band. NOTE: The same operating band cannot be as-

signed on both MAIN and SUB bands, simultane-

ously. Selecting on the SUB band q Push [SUB] to enable the SUB band access. SUB indicator appears. w Push [M/SBAND] for 1 sec. to select operating band. Select 1200 MHz to MAIN band. FM S 1 3 5 7 9 20 40 60dB VFO A VFVFO A S 1 3 5 7 9 2020 4040 60dB60dB Select 1200 MHz to SUB band. FM VFO A S 1 3 5 7 9 20 40 60dB SUB FM VFVFO A S 1 3 5 7 9 2020 4040 60dB60dB 20 BASIC OPERATION 4 VFO selection FM FM displayed VFO FM undisplayed VFO FM VFO A VFO B VFO A VFO B Equalizes the undisplayed VFO condition to the displayed VFO. I VFO description The IC-910H has two VFOs for both bands, specially suited for instant selection of 2 frequencies or 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 your operation. VFO is an abbreviation of Variable Frequency Oscilla-

tor, and traditionally refers to an oscillator. Selecting the VFO A/B Push [A/B 3] to switch between the VFO A and VFO B. VFO equalization Push [A=B 2] for 1 sec. to equalize the undisplayed VFO condition to the displayed VFO. 3 beeps sound when the VFO equalization is completed. CONVENIENT Use two VFOs as a quick memory When you find a new station, but you wish to con-

tinue searching, the two VFO system can be used for quick memory storage. q Push [A=B 2] for 1 sec. to store the displayed fre-

quency into the undisplayed VFO. w Continue searching for stations. e Push [A/B 3] to retrieve the stored frequency. r To continue searching for stations, push [A/B 3]

again. 21 4 BASIC OPERATION I Frequency setting The IC-910H has several tuning steps and a

[kHz/MHz] switch for convenient frequency tuning. q Push [M/S] to select the desired frequency band as the MAIN band; or push [SUB] to access the SUB band. w Rotate the tuning dial to select the frequency. The memory channel number changes to the 10 and 1 Hz digits when rotating the tuning dial with 1, 10, 100 Hz and 6.25 kHz tuning steps. When you want to check the 10 and 1 Hz digits during memory channel number indication, push and hold [A/B]

(10 and 1 Hz digits are indicated while holding). Tuning step selection Tuning steps can be pre-set independently for FM and SSB/CW. The following steps are selectable. FM SSB/CW : 1, 10, 50 or 100 Hz

: 0.1, 5, 6.25, 10, 12.5, 20, 25 or 100 kHz q Push [M/S] to select the desired frequency band as the MAIN band; or push [SUB] to access the SUB band. w Push [FM] or [SSB/CW] to select the desired oper-

ation mode. e Push [kHz/MHzTS] for 1 sec. to enter the tuning step set mode. r Rotate the tuning dial to select the desired tuning step. USBUSB VFO A While tuning USBUSB 10 Hz/1 Hz indication

[kHz/MHzTS] for 1 sec. FM mode tuning step set mode FM

(20 kHz tuning step) t Push [kHz/MHzTS] to return to previous display. SSB/CW mode tuning step set mode USBUSB

(10 Hz tuning step) Quick tuning step The operating frequency can be changed in 1 kHz steps or 1 MHz steps for quick tuning. Push [kHz/MHzTS] to switch the quick tuning step in sequence 1 kHz, 1 MHz and OFF. 1 MHz tuning step 1 kHz tuning step FM VFO A

[kHz/MHzTS]

22 BASIC OPERATION 4 Frequency setting with the keypad The operating frequency can be directly entered from the keypad. q Push [F-INP ENT] to access the keypad frequency entry. All digits of frequency indication disappear. w Push numeral keys to enter the desired operating frequency. The entered number is indicated from the 100 Hz digit. e Push [F-INP ENT] to set the frequency. keypad

[EXAMPLE]

145.3400 MHz

[F-INP ENT] [1] [4] [5] [.] [3] [4] [F-INP]

435.0000 MHz

[F-INP ENT] [4] [3] [5] [.] [F-INP ENT]

439.1200 MHz

[F-INP ENT] [4] [3] [9] [.] [1] [2] [F-INP ENT]

439.1200 MHz to 439.2604 MHz

[F-INP ENT] [.] [2] [6] [0] [4] [F-INP ENT]

Pushing numeral keys to 100 Hz digit without push-

ing [.] also sets the desired operating frequency. Operating mode selection SSB (USB/LSB), CW, CW-N (CW narrow), FM and FM-N (FM narrow) modes are available in the IC-910H. Select the desired operation mode as follows. Selecting SSB mode Push [SSB/CW] to select USB mode. USB mode is generally used for SSB phone operation on the VHF and UHF bands. Push [SSB/CW] for 1 sec. after USB mode selection to switch between USB and LSB mode. Selecting CW mode Push [SSB/CW] to select CW mode. Push [SSB/CW] for 1 sec. after CW mode selection to switch between CW and CW narrow mode. The optional CW narrow lter, FL-132 or FL-133, is required for the MAIN or SUB bands, respectively. In satellite operation, the optional FL-133 is neces-

sary to operate CW narrow mode in the MAIN (re-

ceive) band. No audio is output until the optional CW narrow lter is installed in the CW narrow mode. Selecting FM mode Push [FM] to select FM mode. Push [FM] after FM mode selection to turn the repeater mode (duplex negative with repeater tone ON) ON and OFF. Push [FM] for 1 sec. after FM mode selection to switch between FM and FM narrow mode.

[FM]

[SSB/CW]

23 4 BASIC OPERATION I SUB band OFF The SUB band indication can be deactivated to sim-

plify operation. Push [SUBSUB OFF] for 1 sec. to turn the SUB band indication ON and OFF. Push [M/SBAND] for 1 sec. to change the operating band. (p. 20)

[SUBSUB OFF] for 1 sec. I SUB tuning dial The IC-910H has a large main tuning dial for frequency setting. In addition, the [RIT] or [SHIFT] controls can be used as a SUB tuning dial for dual band simultane-

ous tuning, etc. The SUB tuning dial changes the op-

erating frequency continuously at a variable speed. To use the SUB tuning dial function, assign the func-

tion to either the [RIT] or [SHIFT] control using the RIT/SHIFT set mode. When the [RIT] control is assigned as SUB tuning dial q Push [RIT] for 1 sec. RIT indicator flashes when the SUB tuning dial func-

tion is activated. w Rotate [RIT] control for the desired tuning direction and speed. Tuning speed can be adjusted in 5 steps. e Set [RIT] control to the center position to stops tun-

ing. A beep tone sounds when [RIT] control is set to the cen-

ter. r Push [RIT] to cancel the SUB tuning dial function. 24 FM VFO A S 1 3 5 7 9 20 40 60dB SUB band indication OFF. The assigned control can be used for its original function, however, both functions cannot be used si-

multaneously. FM RITRIT V F O A S 1 3 5 7 9 20 40 60dB FM V F O A V F O A S 1 3 5 7 9 2020 4040 60dB60dB While [RIT] is flashing, SUB band can be controlled with sub dial function. Reverses the frequency and increases the speed. SUB dial functions slightly. Advances the frequency and increases the speed. SUB tuning dial assignment q Push [SET] then [RIT] to enter the RIT/SHIFT set mode. w Push [DN M] or [L UP] to select [RIT] or [SHIFT]

control to be assigned. rit nob or SFt nob appears. e Rotate the tuning dial to select the condition as de-

scribed below. Pushing [M-CL 5] for 1 sec. selects the default setting. r Push [SET] to exit from the RIT/SHIFT set mode. BASIC OPERATION 4

[RIT]

[SHIFT]

[RIT]

[SET]

[DN M] [L UP]

The [RIT] control functions as [RIT]

even when the SUB tuning dial function is in use. (default) The [SHIFT] control functions as

[SHIFT] even when the SUB tuning dial function is in use. (default) The [RIT] control can be used for MAIN band tuning. The [RIT] control can be used for SUB band tuning. The [RIT] control can be used for SUB band IF shift control. The [SHIFT] control can be used for SUB band IF shift control. The [SHIFT] control can be used for MAIN band tuning. The [SHIFT] control can be used for SUB band tuning. I Dial lock function The dial lock function prevents accidental changes caused by the tuning dial (including the SUB tuning dial function). Push [SPCHLOCK] for 1 sec. to turn the dial lock function ON and OFF. LOCK indicator appears while the dial lock function is activated.

[SPCHLOCK] for 1 sec. FM VFO A S 1 3 5 7 9 20 40 60dB FM VFVFO A S 1 3 5 7 9 2020 4040 60dB60dB LOCK LOCK indicatior 25

[AF] (MAIN)

[AF] (SUB)

[RF/SQL] (MAIN)

[RF/SQL] (SUB) When operating in SSB/CW q Rotate [RF/SQL] fully counterclockwise. w Rotate [RF/SQL] clockwise to the position where the maximum RF gain (S-meter bar disappears), MAIN/SUB band indicator goes OFF, and floor noise disappears. With the default setting, the squelch opens at 12 oclock position, however, the squelch threshold level can be set to 13 oclock (1 oclock) position in the SSB/CW set mode. (p. 62) When rotating [RF/SQL] counterclockwise, RF gain de-

creases (lower sensitivity) and the S-meter bar appears to indicate the receivable RF signal level. 5 RECEIVE AND TRANSMIT I Functions for receive Volume setting Rotate [AF] control for the specied operating band

(MAIN or SUB) to output a suitable audio level. Squelch setting The squelch removes noise output from the speaker

(closed position) when no signal is received. The squelch is particularly effective for FM. It is also avail-

able for other modes. With the default setting, noise squelch and S-meter squelch in FM, RF gain and S-meter squelch in SSB/CW mode operation are assigned to [RF/SQL]

control. The assignment can be changed in the gen-

eral set mode. (p. 56) When operating in FM q Rotate [RF/SQL] fully counterclockwise. w Rotate [RF/SQL] clockwise to the position where the noise just disappears. MAIN/SUB band indicator also goes OFF. By rotating [RF/SQL] to a deeper position (clockwise), the S-meter will move and the S-meter squelch func-

tion will be activated. When the S-meter squelch is ac-

tivated, weak signals, weaker than the S-meter squelch set level, are ignored. 26 I RIT function The RIT (Receive Incremental Tuning) function com-

pensates for off-frequencies of the communicating sta-

tion without moving the transmit frequency. The RIT function can be used for the MAIN band only. The function affects the MAIN band even when ac-

cessing the SUB band. q Push [RIT] to turn the RIT function ON. RIT indicator appears. w Rotate [RIT] control to cancel the off-frequencies. Rotate [RIT] control to the center position, after commu-

nication. e Push [RIT] to cancel the RIT function. RIT indicator disappears.

[RIT] switch

[RIT] control I 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 fre-

quency up to 1.2 kHz in 100 Hz steps in SSB/CW mode. The IF shift is especially useful in SSB opera-

tion and not available in FM mode. The IF shift function can be used for the SUB band using the SUB tuning dial function (p. 24) MAIN band IF shift operation q Set the [SHIFT] control to its center position when there is no interference. w Rotate the [SHIFT] control to adjust for minimum in-

terference signal level. The audio tone may change while the IF shift is in use. RECEIVE AND TRANSMIT 5 RIT variable range SSB/CW mode : 1.0 kHz in 10 Hz steps (2.0 kHz for FM mode optional 1200 MHz band)

: 5.0 kHz in 50 Hz steps (10.0 kHz for optional 1200 MHz band) FM mode FM RITRIT RIT variable range is displayed for 2 sec. and then returns to frequency indication. SSB mode USBUSB RITRIT RIT variable range is displayed for 2 sec. and then returns to frequency indication. SUB band IF shift operation q Assign the SUB band IF shift function to either [RIT]

or [SHIFT] control using the RIT/SHIFT set mode

(p. 68). w Push [RIT] for 1 sec. to turn the SUB tuning dial function ON. RIT indicator ashes. e Rotate [RIT] or [SHIFT] control for a minimum inter-

ference signal level. r Push [RIT] to cancel the SUB tuning dial function. RIT indicator disappears. Set [RIT] or [SHIFT] control to the center position after the communication. In satellite operation mode, the SUB tuning dial function cannot be activated. Therefore, the [SHIFT]

control acts as an IF shift for the receive band (dis-

played in the upper area). Max. counter-

clockwise position Center position Max. clockwise position 27 5 RECEIVE AND TRANSMIT I AGC time constant The AGC (Automatic Gain Control) controls receiver gain to produce a constant output level even when the received signal strength is varied by fading, etc. Use AGC slow for normal phone operation; AGC fast for re-

ceiving data and searching for signals. Push [AGC] to switch the time constant between fast and slow. FAGC indicator appears when AGC fast is selected. The AGC time constant is xed in FM mode regardless of the FAGC indicator. The SUB bands AGC is automatically selected as slow in SSB and fast in CW. AGC time constant cannot be changed in FM mode. I AFC function The AFC (Automatic Frequency Control) automatically tunes the operating frequency when receiving an off-

frequency signal or receiving signal shifts in FM or FM narrow mode. Push [AFC/NB] to turn the AFC function ON and OFF. AFC indicator appears when the AFC function is acti-

vated. When strong nearby signals are available, the AFC function may tune to those signals. I FM center indicator The MAIN/SUB band indicators indicate the received signal deviation in FM mode. When an off-center sig-

nal is received, the indicator ashes. When an off-center signal is received, rotate the tun-

ing dial or use the RIT function to illuminate the indica-

tor continuously. The FM center indicator can be turned OFF using the FM set mode. (p. 61) 28

[AGC]

CW VFO A FAGCAGC

[AFC/NB]

FM VFO A AFCAFC Flashes in 300 msec. intervals. I Attenuator The attenuator prevents desired signals from distorting when very strong signals are near the desired fre-

quency, or when very strong electric fields, such as from broadcasting stations are near from your location. The attenuator can be set to both or either band sepa-

rately, and the attenuation level can be set for each band independently. Push [ATT] to turn the attenuator ON and OFF. ATT indicator appears when the attenuator is activated. Setting the attenuation level q Push [M/SBAND] or [SUB] to select the desired band of the attenuation level to be set. w Push [SET] then [ATT] to enter the attenuator set mode. e Rotate the tuning dial to select attenuation level. Push [M-CL 5] to return to the default value. r Push [SET] to exit the attenuator set mode. NOTE: When using the noise blanker, received audio may be distorted if they are excessively strong. I 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 on the S-meter. q Set the operating frequency and mode. w Push [SWP 0] to turn the simple band scope func-

tion ON and OFF. SWP indicator flashes when the simple band scope function is activated. Detected signals are indicated using the S-meter and M indicator, displayed above the S-meter, shows the center frequency (displayed frequency). The signal availability is detected by the noise squelch condition (open or close). e To monitor the detected signal, rotate the tuning dial to set the appearing dot of the S-meter to below the M indicator. The frequency readout shows the detected signal fre-

quency. Setting sweeping time interval q Push [SET] then [SWP 0] to enter the sweep set mode. w Rotate the tuning dial to select sweeping time inter-

val. Push [M-CL 5] to return to the default value. e Push [SWP 0] to exit the sweep set mode. RECEIVE AND TRANSMIT 5

[ATT]

CW ATT VFO A Attenuation levels 144 MHz/

430(440) MHz bands Approx. 15 dB attenuation 0100% variable 1200 MHz band at 100% setting Approx. 20 dB xed

(optional)

[SWP 0]

Shows 10 channels around the displayed frequency. FM V F O A SWP Indicates detected signals Sweep center 29 5 RECEIVE AND TRANSMIT I Noise blanker When operating in SSB or CW mode, pulse-type noise may be received such as from car ignitions. In this case, the noise blanker eliminates such noise. The noise blanker is effective on both the MAIN and SUB bands but cannot be used for FM, or non-pulse-

type noise. Push [AFC/NB] to turn the noise blanker function ON and OFF. NB indicator appears when the noise blanker is acti-

vated. The noise blanker turns ON or OFF for both bands si-

multaneously. When using the noise blanker, received audio may be distorted if the signals are excessively strong. I Tone squelch operation The tone squelch opens only when receiving a signal with the same pre-programmed subaudible tone. You can silently wait for a call from group members using the same tone.You can check the tone frequency using the tone scan function if desired. (p. 47) q Select the desired band by pushing [M/SBAND]. w Push [FM] to select FM mode, then set the desired frequency. e Push [CALLT-SQL] for 1 sec. to activate the tone squelch. T-SQL indicator appears. r When the signal with correct tone is received, the squelch opens and audio can be heard. When a signal with incorrect tone or no tone is received, the squelch does not open, however, the S-meter indi-

cates the signal strength. Push and hold [CHECK 7] to open the squelch manually and keep pushing to monitor. t Operate the transceiver in a normal way (push

[PTT] to transmit; release [PTT] to receive). y Push [CALLT-SQL] for 1 sec. to cancel the tone squelch. T-SQL indicator disappears.

[CALLT-SQL]

[FM]

[SET]

Tuning dial

[DN ]/[ UP]

30

[AFC/NB]

CW VFO A NB Setting the tone squelch frequency The tone squelch frequencies can be independently set for each band. q Push [M/SBAND] to select the band for the tone squelch frequency to be set. w Push [SET] then [FM] to enter the FM set mode. e Push [DN M] or [L UP] to select tone squelch fre-

quency item. r Rotate the tuning dial to select the desired tone squelch frequency. t Push [FM] to exit from the FM set mode. Tone frequency list 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 unit: Hz 254.1 FM T-SQL VFO A I Optional DSP functions To activate the following functions, the optional DSP unit, UT-106, must be installed for both or either the MAIN and/or SUB bands. NR (Noise Reduction) function This function reduces noise components and picks out desired signals which are buried in noise. The received audio signals are converted to digital signals and then the desired signals are separated from the noise. The noise reduction function is available for all operating modes. q Push [M/SBAND] or [SUB] to select the band you wish to activate, if required. w Push [AFC/NBNR] for 1 sec. to turn the noise re-

duction function ON and OFF. NR indicator appears while the automatic notch lter is activated.

[AFC/NBNR] for 1 sec. ANF (Automatic Notch Filter) function This function automatically attenuates beat tones, tun-

ing signals, etc., even if they are moving. The auto-

matic notch lter functions in SSB/FM modes. q Push [M/SBAND] or [SUB] to select the band you wish to activate, if required. w Push [AGCANF] for 1 sec. to turn the automatic notch lter function ON and OFF. ANF indicator appears while the automatic notch lter is activated. RECEIVE AND TRANSMIT 5 optional UT-106 Setting the noise reduction level q Push [SET] then [AFC/NBNR] to enter the noise reduction set mode. w Rotate the tuning dial to select the desired noise re-

duction level. Push [M-CL 5] for 1 sec. to return to the default value. e Push [AFC/NBNR] to exit from the noise reduction set mode. USBUSB VFO A NR Auto notch OFF Auto notch ON Desired signal (AF) Desired signal (AF) Unwanted tone frequency Particular frequency is attenuated USBUSB VFO A

[AGCANF] for 1 sec. ANFANF 31 5 RECEIVE AND TRANSMIT I Functions for transmit Output power The transmit output power can be continuously ad-

justed with [RF PWR]. Available power 144 MHz band

: 5100 W 430(440) MHz band : 575 W 1200 MHz band

: 110 W (optional) I Transmission via microphone When transmitting with a microphone, push [PTT] and speak into the microphone at a normal voice level. To maximize the readability of your transmitted sig-

nal (voice), pause a few sec. after pushing [PTT]. Do not hold the microphone too close to your mouth. Microphone gain Rotate [MIC GAIN] clockwise to increase, counter-

clockwise to decrease the microphone gain. 912 oclock position is recommended for [MIC GAIN]. I Indications during transmit Transmit indicator The MAIN band indicator lights red while transmitting. However, the SUB band indicator lights red during satellite operation. RF power indicator The S-meter for the MAIN band is used as the RF power indicator to indicate the relative output power level. However, the S-meter for the SUB band is used as the RF power indicator during satellite operation. Time-out timer The time-out timer limits the continuously transmittable time period, and is selectable from 3, 5, 10, 20, 30 min. and OFF in TRANSMIT set mode. (p. 66) PTT lock function Deactivate [PTT] and [TRANSMIT] switches. The func-

tion can be switched ON and OFF in TRANSMIT set mode. (p. 66) 32 NOTE: To prevent interference, listen on the fre-

quency to make sure the frequency is clear before transmitting by pushing [CHECK 7].

[RF PWR]

[PTT] switch HM-12 FM VFO A S 1 3 5 7 9 20 40 60dB OVER FM VFVFO A S 1 3 5 7 9 2020 4040 60dB60dB OVEROVER S-meter while receiving RF power indicator while transmitting I FM mode operation q Push [M/SBAND] to select the desired band. w Push [FM] to select FM mode. FM indicator appears. Push [FM] again to select repeater operation after FM mode selection. DUP and T indicators appear. Push [FM] for 1 sec. to select FM narrow mode after FM mode selection. FMN indicator appears. e Rotate the tuning dial to set the desired frequency. r Push [PTT] to transmit. The MAIN band indicator lights red. I VOX operation (for SSB and FM) The VOX (Voice-operated Transmission) function switches between transmit and receive with your voice. This function provides an opportunity to input log en-

tries into your computer, etc., while operating. q Push [M/SBAND] to select the desired band. w Push either [SSB/CW] or [FM] to select phone mode (USB, LSB or FM). e Push [VOX] to switch the VOX function ON and OFF. VOX indicator appears while the VOX function is acti-

vated. Adjusting the VOX gain q Push [SET] then [VOX] to enter the VOX set mode. w Push [DN M] or [M UP] to select the VOX gain item. GAIn is displayed. e Rotate the tuning dial to adjust the VOX gain while speaking into the microphone at a normal voice level, until the transceiver begins transmitting. With too sensitive a setting, the transceiver may trans-

mit with other than your voice, such as noise, receiving signal, etc. Push [M-CL 5] for 1 sec. to return to the default value. r Push [VOX] to exit VOX set mode. RECEIVE AND TRANSMIT 5 t Speak into the microphone at a normal voice level. Setting the [MIC GAIN] control to 1012 oclock is rec-

ommended. y Release [PTT] to receive.

[TRANSMIT]

[M/SBAND]

[FM]

[MIC GAIN]

Tuning dial Adjusting the anti-VOX gain q Push [SET] then [VOX] to enter the VOX set mode. w Push [DN M] or [L UP] to select anti-VOX gain item. Anti is displayed. e Rotate the tuning dial to adjust the anti-VOX gain while receiving a signal with a suitable audio output level, to the point where the transceiver does not transmit with the audio output from the speaker. Push [M-CL 5] for 1 sec. to return to the default value. r Push [VOX] to exit VOX set mode. Adjusting the VOX delay q Push [SET] then [VOX] to enter the VOX set mode. w Push [DN M] or [L UP] to select the VOX delay item. dELAy is displayed. e Rotate the tuning dial to adjust the VOX delay time while speaking into the microphone at a normal speed, to a convenient interval before returning to receive. Push [M-CL 5] for 1 sec. to return to the default value. r Push [VOX] to exit VOX set mode. 33 5 RECEIVE AND TRANSMIT I 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. Setting the auto repeater range The auto repeater function automatically turns ON the duplex operation with specied shift direction and tone encoder when the operating frequency is set in the de-

sired frequency range. To activate the auto repeater function, the following operations are necessary. q Set one edge frequency of the desired frequency range. Push [M/SBAND] to select the desired band if required. Push [FM] to select FM mode if required. w Set the desired repeater conditions. Both one-touch repeater and manual repeater setting are acceptable. e Push [DN M] or [L UP] to select the memory chan-

nel 1. The memory channel 3 or 5 is also acceptable. r Push [MW 4] for 1 sec. to program the contents into the memory. 3 beep tones may sound. t Set the other side edge frequency of the desired frequency range. y Push [L UP] to select the memory channel 2. Select memory channel 4 or 6, respectively if the mem-

ory channel 3 or 5 is selected in step e. u Push [MW 4] for 1 sec. to program the contents into the memory. i Repeat steps q to u to program other ranges. o Push [POWER] for 1 sec. to turn the power OFF once, then push [POWER] to turn the power ON while pushing and holding [FM] and [TONE]. The memory channels can be used for normal operation after programming. Setting the shift direction for the one-

touch repeater function q Push [M/SBAND] or [SUB] to select the desired frequency band. w Push [SET] then [FM] to enter the FM set mode. e Push [DN M] or [L UP] to select shift direction item. o_touch and rPt are displayed. r Rotate the tuning dial to select the desired direction. DUP or DUP+ is selectable. t Push [FM] to exit from the FM set mode. 34

!0 Push [SET] then [FM] to enter the FM set mode.

!1 Push [DN M] or [L UP] to select auto repeater item. AutorPt is displayed.

!2 Rotate the tuning dial to turn the auto repeater func-

tion ON. U.S.A. version:

on1 Activates duplex only. on2 Activates duplex and tone. oFF Auto repeater function is turned OFF. Korea version:

ON Activates duplex and tone. OFF Auto repeater function is turned OFF.

!3 Push [FM] to exit from the FM set mode. NOTE: All repeater ranges for available bands must be programmed at the same time. Otherwise, the previously programmed ranges will be lost. Frequency range and shift direction U.S.A. version FREQUENCY RANGE SHIFT DIRECTION 1145.20001145.4999 MHz 1146.61001146.9999 MHz DUP appears 1147.00001147.3999 MHz DUP+ appears 1442.00001444.9999 MHz DUP+ appears 1447.00001449.9999 MHz DUP appears 1282.00001295.9999 MHz DUP appears Korea version FREQUENCY RANGE SHIFT DIRECTION 1439.00001440.0000 MHz DUP appears 1290.00001293.0000 MHz DUP appears Manual repeater setting

(non-European versions) q Set the desired frequency. Push [M/SBAND] to select the desired band if required. Push [FM] to select FM mode if required. w Push [SPLITDUP] for 1 sec. to select the duplex operation and the shift direction. DUP or DUP+ indicator appears, depending on the selection. Set the offset frequency in the FM set mode, if required. e Push [TONE] to activate the tone encoder. T indicator appears. Set the tone frequency in the FM set mode, if required. r Push [SPLITDUP] for 1 sec. and [TONE] to cancel the duplex operation and deactivate the tone en-

coder. DUP or DUP+ and T indicators disappear. RECEIVE AND TRANSMIT 5 Using the one-touch repeater function By using the pre-programmed offset frequency, shift di-

rection and tone frequency, quick and simple repeater operation can be made. t Push [PTT] to access the repeater. Shifts 5 MHz when transmitted. FM DUP VFO A T S 1 3 5 7 9 20 40 60dB y Release [PTT] to receive a signal from the repeater. u Push [FM] to cancel the duplex operation mode. DUP and T indicators disappear. FM VFO A

: 0.600 MHz The default values for offset frequency and direction are as follows:

144 MHz band 430(440) MHz band : 5.000 MHz (other than below) 7.200 MHz (European version) 1.600 MHz (Swedish version)

: 20.000 MHz (optional)

: 88.5 Hz 1200 MHz band Tone frequency q Push [M/SBAND] to select the desired frequency band. w Push [FM] to select FM mode. e Rotate the tuning dial to input the desired repeater frequency. Direct frequency input using the keypad can be used for frequency setting. FM VFO A r Push [FM] to select the repeater operation mode. DUP and T indicators appear. FM DUP VFO A T Setting tone frequency

(non-European versions) q Push [M/SBAND] to select the desired frequency band. w Push [SET] then [FM] to enter the FM set mode. e Push [DN M] or [L UP] to select the tone frequency item. ton, selected band (144/430(440)/1200) and T indica-

tor appear. r Rotate the tuning dial to set the desired tone fre-

quency. t Push [FM] to exit from the FM set mode. Setting offset frequency q Push [M/SBAND] or [SUB] to select the desired frequency band. w Push [SET] then [FM] to enter the FM set mode. e Push [DN M] or [LUP] to select the offset frequency item. duP and selected band (144/430(440)/1200) appear. r Rotate the tuning dial to set the desired tone fre-

quency. t Push [FM] to exit from the FM set mode. 35 5 RECEIVE AND TRANSMIT I SSB mode operation q Push [M/SBAND] to select the desired frequency band. w Push [SSB/CW] to select USB or LSB mode. Push [SSB/CW] for 1 sec. to switch between USB and LSB when either the USB or LSB has been selected. e Rotate the tuning dial to set the desired frequency. r Push [PTT] to transmit and speak into the micro-

phone at a normal voice level. t Rotate [MIC GAIN] so that the MAIN band indicator periodically lights red brightly. The brightness increases when the ALC is activated. y Release [PTT] to receive.

[TRANSMIT]

[M/SBAND]

[SSB/CW]

[MIC GAIN]

Tuning dial ALC indicator While transmitting, the MAIN/SUB band indicator shows the ALC condition. Brightness increases more than usual when the ALC function is activated. VOX function The VOX (Voice-operated Transmission) function is available for switching between transmit and receive with your voice. See p. 33 for details. I Speech compressor The speech compressor increases average RF output power, improving signal strength and readability in SSB. The IC-910H has a built-in, low-distortion speech compressor circuit. Push [COMP] to turn the speech compressor ON and OFF. Either USB or LSB should be selected. COMP indicator appears when the speech compressor is activated.

[COMP]

MAIN band LED lights in red while transmitting.

[MIC GAIN]

Compression level setting q Select USB or LSB mode. w Preset the transceiver as follows:

[COMP] function

[RF POWER] control

: OFF

: Max. counterclockwise e Transmit at your normal voice level. r Adjust the [MIC GAIN] control so that the MAIN band indicator periodically lights red brightly whether or not you speak softly or loudly. t Push [COMP] to turn the speech compressor ON. y Push [SET] then [COMP] to enter the COMP set mode. u Rotate the tuning dial to adjust the compression level to the point where the maximum value and the MAIN band indicator brightness does not increase, whether or not you speak softly or loudly. When the MAIN band indicator continuously lights red with increased brightness, your transmitted voice may be distorted. Its a good idea to adjust the compressor level by moni-

toring with an other transceiver or receiver, if you have one, or with an other station. i Push [COMP] to exit the COMP set mode. 36 RECEIVE AND TRANSMIT 5 y Push [SPLIT]. SPLIT indicator appears. Now you can receive on the displayed VFO and transmit on the undisplayed VFO. To monitor the transmit frequency, push [CHECK 7]. USBUSB SPLIT SPLIT VFO B u Push [SPLIT] to cancel the split frequency opera-

tion. SPLIT indicator disappears.

[TRANSMIT]

[SPLIT]

[A=B 2]

[A/B 3]

I Split frequency operation Split frequency operation allows you to transmit and re-

ceive on two different frequencies in the same fre-

quency band. Split frequency operation uses 2 fre-

quencies, one in VFO A and the other in VFO B. q Set a receive frequency in VFO mode. Either VFO A or VFO B can be used. w Push [A=B 2] for 1 sec. The undisplayed VFO contents are cleared and equal-

ized to the displayed frequency. e To change the receive frequency, rotate the tuning dial. USBUSB VFO A r To replace the transmit and receive frequencies, push [A/B 3]. USBUSB VFO B t To change the transmit frequency, rotate the tuning dial while pushing [CHECK 7]. Cross mode communication can be performed using the split function. (e.g. USB and CW) I Full duplex operation The MAIN and SUB bands are activated indepen-

dently, therefore, simultaneous transmission and re-

ception in different frequency bands are possible. SUB band mute function The SUB band mute function mutes receiving audio from the SUB band while transmitting. q Push [M/SBAND] to select the desired frequency q Push [SET] then [TRANSMIT] to enter the TRANS-

band for transmission. Push [V/M 1] to select VFO or memory mode, if desired. Push [SSB/CW] or [FM] to select the desired operating mode. w Rotate the tuning dial to set the desired frequency. Direct frequency input from the keypad is also available. e Push [SUB] to enable the SUB band access. Push [M/SBAND] for 1 sec. to select the desired fre-

quency band, if desired. (when the optional UX-910 is in-

stalled.) Push [V/M 1] to select VFO or memory mode, if desired. Push [SSB/CW] or [FM] to select the desired operating mode. r Push [PTT] to transmit. MIT set mode. w Push [DN M] or [L UP] to select the SUB band mute item. Audio is displayed. e Rotate the tuning dial to turn the SUB band mute function ON and OFF. Push [M-CL 5] for 1 sec. to return to the default setting. r Push [TRANSMIT] to exit from the TRANSMIT set mode. 37 5 RECEIVE AND TRANSMIT I Connections for CW Before operating in CW, select the paddle type using the SSB/CW set mode. e Push [DN M] or [L UP] to select the paddle type item. PAddLE is displayed. q Push [SSB/CW] to select CW mode. CW indicator appears. r Rotate the tuning dial to select the paddle type. Push [M-CL 5] for 1 sec. to return to the default setting. w Push [SET] then [SSB/CW] to enter the SSB/CW t Push [SSB/CW] to exit the SSB/CW set mode. set mode.

[KEY] jack CW paddle with normal polarity (default) CW Paddle CW paddle with reverse polarity CW paddle use as bug-key Straight key Electronic keyer OFF (straight key) NOTE: A stereo plug must be used even when a straight key is used. See page 12 or 15. Microphone Substitute paddle function

(microphone [UP]/[DN]) NOTE: [UP]/[DN] keying does not function while pushing [PTT] on the microphone. Push [TRANS-

MIT] on the front panel or use the semi break-in function in this case.

[MIC] connector I CW mode operation q Connect a paddle or straight key as above. w Push [M/SBAND] to select the desired frequency band. e Push [SSB/CW] to select CW mode. Push [SSB/CW] for 1 sec. to select CW narrow mode after the CW mode selection when the optional CW nar-

row filter, FL-132 (for MAIN band) or FL-133 (for SUB band), is installed. r Rotate the tuning dial to set the operating fre-

quency. t Push [TRANSMIT] to set the transceiver to transmit mode. The MAIN band indicator lights red. 38 y Operate the paddle or key to transmit the CW sig-

nal. u Push [TRANSMIT] to return to receive mode.

[TRANSMIT]

[M/SBAND]

[SSB/CW]

Tuning dial RECEIVE AND TRANSMIT 5 Setting keying speed q Push [SET] then [SSB/CW] to enter the SSB/CW Setting side tone q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. set mode. w Push [DN M] or [L UP] to select the keying speed w Push [DN M] or [L UP] to select the side tone item. item. SPEEd is displayed. e Rotate the tuning dial to adjust the keying speed to the desired speed. Keying speed can be selected from 660 wpm. Push [M-CL 5] for 1 sec. to return to the default value. r Push [SSB/CW] to exit the SSB/CW set mode. Setting semi break-in function q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. w Push [DN M] or [L UP] to select the semi break-in item. br-In is displayed. e Rotate the tuning dial to turn the semi break-in func-

tion ON and OFF. Push [M-CL 5] for 1 sec. to return to the default setting. r Push [DN M] or [LUP] to select the delay time item. dELAy is displayed. t Rotate the tuning dial to set the delay time to the desired time period. Delay time can be selected from 2.013.0 sec. in 0.1 sec. steps. Push [M-CL 5] for 1 sec. to return to the default value. y Push [SSB/CW] to exit the SSB/CW set mode. Setting keying weight q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. w Push [DN M] or [L UP] to select the keying weight item. rAtio is displayed. e Rotate the tuning dial to adjust the keying weight ratio to the desired level. Keying weight ratio can be selected from 1:1:2.8 to 1:1:4.5. Push [M-CL 5] for 1 sec. to return to the default value. r Push [SSB/CW] to exit the SSB/CW set mode. Setting CW pitch q Push [SET] then [SSB/CW] to enter the SSB/CW set mode. w Push [DN M] or [L UP] to select the CW pitch item. Pitch is displayed. e Rotate the tuning dial to adjust the CW pitch to the desired pitch. CW pitch can be adjusted within 300900 Hz range. Push [M-CL 5] for 1 sec. to return to the default value. r Push [SSB/CW] to exit the SSB/CW set mode. SidE-t is displayed. e Rotate the tuning dial to adjust the side tone level to the desired level. Push [M-CL 5] for 1 sec. to return to the default value. r Push [SSB/CW] to exit the SSB/CW set mode. 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 the keying speed only. 39 6 MEMORY OPERATION I Memory channels The IC-910H has 106 memory channels (99 for regu-

lar, 6 scan edges and 1 call) and they are equipped for each frequency band for storing the most often used frequencies and operating mode, as well as tone fre-

quency, offset frequency, etc. I Operation on a memory channel Frequency and mode, etc., can be changed in a mem-

ory channel. However, they will be cleared if [MW 4] is not pushed. Memory channel selection q Push [V/M 1] to select memory channel mode. MEMO indicator appears. w Push [DN M] or [L UP] to select the desired mem-

ory channel. Memory channel changes continuously while holding

[DN M] or [L UP]. The tuning dial rotation while pushing [F-INP ENT] also selects memory channel. e Push [V/M 1] to return to VFO mode. During VFO mode operation By pushing [DN M] or [L UP] during VFO mode opera-

tion, memory channel is also selectable. However, the frequency readout does not change in this case, only the memory channel number changes. Memory Channel 199 1A/1b3A/3b C Description Regular memory channels. Programs op-

erating frequency, mode, subaudible tone activity with frequency and split/duplex conditions. Scan edge channels. Programs edge fre-

quencies for programmed scan. Call channel recalls a specified fre-

quency on the instant. Programs operat-

ing frequency, mode, etc., and is avail-

able for each band, independently.

[DN ]

[UP ]

VFO A Select memory mode MEMO Select memory channel MEMO FM FM USBUSB 40 I Programming in VFO mode Memory channel programming can be performed ei-

ther in VFO mode or in memory mode. q Set the desired operating frequency and mode in VFO mode. Push [V/M 1] to select VFO mode, if required. Tone frequency, offset frequency, etc., can also be pro-

grammed. Input the frequency from the keypad Push [F-INP ENT] [1] [4] [4] [.] [2] [6]

[8] [F-INP ENT]

w Push [DN M] or [L UP] to select the desired mem-

ory channel to be programmed. e Push [MW 4] for 1 sec. to program the displayed fre-

quency and operating mode into the memory chan-

nel. To check the programmed contents, push [V/M 1] to select memory mode. MEMORY OPERATION 6 FM VFO A Set desired frequency and mode. USBUSB VFO A Select desired memory channel. USBUSB VFO A Beep tones sound. USBUSB VFO A I Programming in memory mode q Push [V/M 1] to select memory mode. w Push [DN M] or [L UP] to select the desired mem-

ory channel to be programmed. The tuning dial rotation while pushing [F-INP ENT] also selects memory channel. e Set the desired operating frequency and mode in the memory mode. Tone frequency, offset frequency, etc., can also be pro-

grammed. Set the desired operating frequency using with the key-

pad when programming into blank channels. The tuning dial rotation for frequency setting cannot be performed when a blank channel is selected. Input the frequency from the keypad Push [F-INP ENT] [1] [4] [4] [.] [1] [6]

[4] [F-INP ENT]

r Push [MW 4] for 1 sec. to program the displayed fre-

quency and operating mode into the memory chan-

nel. FM USBUSB USBUSB USBUSB MEMO Select desired memory channel. MEMO Set desired frequency and mode. MEMO Beep tones sound. MEMO 41 6 MEMORY OPERATION I Blank channels Memory channels 699 are blank channels by factory default. They have no contents programmed. When a blank channel is selected, the BLANK indi-

cator appears and the frequency band is displayed 2 sec. after the selection. Programming a blank channel q Push [V/M 1] to select VFO mode. w Set the desired operating frequency, mode, etc. e Push [MW 4] for 1 sec. to program the memory channel. BLANK indicator disappears. MEMO BLANANK Operating band appears after 2 sec. MEMO BLANANK

--430- appears while in 430 MHz band.

-1200- appears while in 1200 MHz band. I Frequency transferring The frequency and operating mode in a memory chan-

nel can be transferred to the VFO. Frequency transferring can be performed in either VFO mode or memory mode. Transferring in memory mode This is useful for transferring frequency and operating mode while operating in memory mode. When you have changed the frequency or operating mode in the selected memory channel:

Displayed frequency and mode are transferred. Programmed frequency and mode in the memory channel are not transferred, and they remain in the memory channel. q Push [DN M] or [L UP] to select the memory chan-

nel to be transferred in memory mode. And, set the frequency or operating mode if required. w Push [MV 6] for 1 sec. to transfer the frequency and operating mode. Displayed frequency and operating mode are transferred to the VFO. e Push [V/M 1] to return to VFO mode. 42 Transferring in VFO mode This is useful for transferring programmed contents to VFO. q Push [V/M 1] to select VFO mode. w Push [DN M] or [L UP] to select the memory chan-

nel to be transferred. BLANK appears if the selected memory channel is a blank channel. In this case transferring is impossible. e Push [MV 6] for 1 sec. to transfer the frequency and operating mode. Transferred frequency and operating mode appear on the frequency readout. USBUSB USBUSB MEMO Beep tone sounds. MEMO Select VFO mode. USBUSB VFO A I Memory clearing Any unnecessary memory channels can be cleared. The cleared memory channels become blank chan-

nels. q Push [V/M 1] to select memory mode. w Push [DN M] or [L UP] to select the desired mem-

ory channel to be cleared. e Push [M-CL 5] for 1 sec. to clear the contents. The programmed frequency and operating mode disap-

pear. BLANK indicator appears. r To clear other memory channels, repeat steps w and e. MEMORY OPERATION 6 USBUSB MEMO Beep tone sounds. MEMO BLANANK Operating band appears after 2 sec. I Call channel The call channel is a one-touch accessible channel for recalling your most-often-used frequency. The IC-910H has one call channel for each frequency band. Call up a call channel USBUSB q Push [M/SBAND] or [SUB] to select the desired frequency band. w Push [CALL] to select the call channel. e Push [CALL] or [V/M 1] to return to previous display. FM Call channel programming q Push [M/SBAND] or [SUB] to select the desired frequency band. w Push [CALL] to select the call channel. e Enter the desired frequency using the keypad. e.g.; When programming 145.8200 MHz. Push [F-INP ENT] [1] [4] [5] [.] [8]

[2] [F-INP ENT]

Select operating mode if required. r Push [MW 4] for 1 sec. to program the call channel. Transferring call channel contents q Push [M/SBAND] or [SUB] to select the desired frequency band. w Push [CALL] to select the call channel. e Push [MV 6] for 1 sec. to transfer the call channel contents. MEMO BLANANK VFO A BLANANK 43 6 MEMORY OPERATION I Memo pads The IC-910H has a memo pad function for each fre-

quency band to store frequency 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 the memo pad set mode

(p. 64) if desired. 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 desired station is busy for a long time and you want to temporarily search for other stations. Use the transceivers memo pads instead of relying on hastily scribbled notes that are easily misplaced. Writing frequencies and operating modes into memo pads You can simply store the accessed readout frequency and operating mode by pushing [MPW 8]. When you write a 6th (or 11th) frequency and operat-

ing mode, the oldest written frequency and operating mode are automatically erased to make room for the new settings. Each memo pad must have its own unique combi-

nation of frequency and operating mode; memo pads having identical settings cannot be written. VFO or memory mode Memo pad contents FM VFO A When [MPW 8] is pushed, FM 145.9200 MHz is programmed and the oldest memo pad is cleared. USB FM USB FM CW Cleared 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 [MPR 9]. Both VFO and memory modes can be used. The frequency and operating mode are called up, starting from the most recently written. VFO or memory mode Memo pad contents FM VFO A USB FM USB FM CW 44 SCANS 7 I Scan types Scanning searches for signals automatically and makes it easier to locate new stations for contact or lis-

tening purposes. The IC-910H has several scan types;

programmed scan, memory scan and mode select scan. The scanning operation can be performed indepen-

dently for MAIN and SUB band. And to search a sub-

audible tone frequency for a repeater frequency, a tone scan is also available. PROGRAMMED SCAN Repeatedly scans between two scan edge frequencies

(scan edge memory channels 1A/2A/3A and 1b/2b/3b). This scan operates in VFO mode. Scan edge

(1A/2A/3A) Scan edge

(1b/2b/3b) Scan Jump Scan starts from the displayed frequency or the lower scan edge frequency. MEMORY SCAN Repeatedly scans all programmed memory channels. This scan operates in memory mode. MODE SELECT SCAN Repeatedly scans all selected mode memory channels. This scan operates in memory mode. M-CH 2 M-CH 3 M-CH 4 USB FM CW M-CH 1 Blank M-CH 5 FM FM M-CH 99 M-CH 7 M-CH 6 FM FM USB Call channels and scan edge channels are not scanned. I Preparation Squelch condition Set the [RF/SQL] control as for regular operation. When receiving a signal Scan pauses for 10 sec. when receiving a signal, then resumes. When a signal disappears while scan is paused, scan resumes approx. 3 sec. later. Scan resume ON/OFF You can select the scan to resume or cancel when re-

ceiving a signal, in the scan set mode. Scan resume ON/OFF must be set before operating a scan. See de-

tails described at right for ON/OFF setting. Scan start/stop operation Push [SCAN .] to start and cancel scanning. Scan speed Scan speed can be selected from 2 levels, high (de-

fault) or low, in the scan set mode. See details de-

scribed at right. Setting scan resume condition q Push [SET] then [SCAN .] to enter the scan set mode. w Push [DN M] or [L UP] to select the scan resume item. SC-rES is displayed. e Rotate the tuning dial to select scan resume condi-

tion from ON and OFF. ON: scan resumes, oFF: scan cancels Push [M-CL-5] for 1 sec. to return to the default setting. r Push [SCAN .] to exit from the scan set mode. Setting scan speed q Push [SET] then [SCAN .] to enter the scan set mode. w Push [DN M] or [L UP] to select the scan speed item. SC-SPd is displayed. e Rotate the tuning dial to select scan resume condi-

tion from HI and Lo. Push [M-CL-5] for 1 sec. to return to the default setting. r Push [SCAN .] to exit from the scan set mode. 45 7 SCANS I Programmed scan operation Scans specied frequency range, programmed in the memory channel 1A/1b, 2A/2b and 3A/3b. Before start-

ing the programmed scan, scan edges should be pro-

grammed in these channels. Selecting scanning range q Push [M/SBAND] or [SUB] to select the desired frequency band to be scanned. w Push [SET] then [SCAN .] to enter the scan set mode. e Push [DN M] or [L UP] to select the programmed scan item. P-SCAn is displayed. r Rotate the tuning dial to select the desired scanning range from 1A-1b, 2A-2b and 3A-3b. Push [M-CL 5] for 1 sec. to return to the default setting. t Push [SCAN .] to exit from the scan set mode. Starting the programmed scan q Push [M/SBAND] or [SUB] to select the desired frequency band to be scanned. w Push [V/M 1] to select VFO mode. e Select the desired operating mode. The operating mode can also be changed while scan-

ning. r Push [SCAN .] to start the programmed scan. SCAN indicator ashes. The tuning step setting is used for the scanning step. 1 kHz or 1 MHz tuning step can also be used as the scanning step. t Push [SCAN .] to cancel the scan. If the same frequency is programmed into the scan edge memory channel 1A and 1b, 2A and 2b or 3A and 3b, programmed scan does not start. wSelect mode. qSelect VFO mode. FM VFO A eStart. rStop. I Memory scan operation Scans programmed memory channels only. Blank channels and programmed scan edge channels

(1A/1b, 2A/2b and 3A/3b) are not scanned. q Push [M/SBAND] or [SUB] to select the desired frequency band to be scanned. w Push [V/M 1] to select memory mode. e Push [SCAN .] to start the memory scan. SCAN indicator ashes. Pushing [SPCHLOCK] for 1 sec. during scan starts mode select scan and LOCK indicator appears. (p. 47) r Push [SCAN .] to cancel the scan. S 1 3 5 7 9 20 40 60dB SCAN Flashes while scanning qSelect memory mode. wStart. eStop. FM USBLSB CW N MEMO SQL T-

S 1 3 5 7 9 ATT P.AMP AFCNB FAGC 20 40 60dB SCAN Flashes while scanning 46 I Mode select scan Scans the memory channels, desired operating mode is programmed, only. q Push [M/SBAND] or [SUB] to select the desired frequency band to be scanned. w Push [V/M 1] to select memory mode. e Push [SSB/CW] or [FM] to select the desired oper-

ating mode to be scanned. The operating mode can also be changed during scan. r Push [SPCHLOCK] for 1 sec. LOCK indicator appears. t Push [SCAN .] to start the mode select scan. SCAN indicator ashes. y Push [SCAN .] to cancel the scan. I Tone scan The transceiver can detect a subaudible tone fre-

quency in a received signal. By monitoring a signal that is being transmitted on a repeater input frequency, you can determine the tone frequency required to access the repeater. q Set the desired frequency or memory channel to be checked for a tone frequency. w Push [FM] to select FM mode. e Push [TONE] or [CALLT-SQL] for 1 sec. to activate the subaudible tone. T or T-SQL indicator appears. r Push [SCAN .] for 1 sec. to start the tone scan. SCAN indicator ashes while scanning. Scan stops when a subaudible tone is detected. Scan becomes slower or quicker, respectively when the noise squelch is open or closed. t Push [SCAN .] for 1 sec. to cancel the scan. NOTE: The tone scan automatically changes tone frequency setting to the detected tone frequency. SCANS 7 wSelect mode. qSelect memory mode. LOCK e appears. rStart. tStop. USBUSB MEMO S 1 3 5 7 9 20 40 60dB FM SCAN VFVFO A S 1 3 5 7 9 2020 4040 60dB60dB LOCK Flashes while scanning qSelect FM mode. wStart. eStop. FM VFO A SQL T-

S 1 3 5 7 9 20 40 60dB SCAN Flashes while scanning 47 8 SATELLITE OPERATION I Satellite communications outline Both satellite mode B (435 MHz uplink, 145 MHz downlink) and mode J (145 MHz uplink, 435 MHz downlink) can be operated from the IC-910H, and mode L can be operated when the optional UX-910 1200 MHz BAND UNIT is installed. Orbit information Orbit information describes satellite location, reach-

ing angles, etc. This information may be available in ham magazines or organization issues, such as from ARRL, RSGB handbook, etc. Satellite communications is possible only when a satel-

lite is in view and its transponder is activated. Appropriate satellite tracking software is also conve-

nient. FUJI 3 (FO-29) 145 MHz band 435 MHz band 435 MHz band Uplink Downlink 145 MHz band Mode B operating diagram

[Example]: FUJI 3 (FO-29), Mode B Uplink frequency:

145.9000146.0000MHz Downlink frequency:

435.8000435.9000 MHz Tracking direction:

Reverse CW beacon frequency:

435.7950 MHz I Satellite notes 1. NEVER set the output power too high. Too much power will shorten the satellites life. Set your transmit power so that your downlink signal level is lower than the beacons signal level. 3. Preampliers may be necessary to receive satellite signals. Optional AG-25, AG-35 and AG-1200 (for UX-910) are available to use with the IC-910H.

(p. 16) 2. Confirm a satellites operating mode in advance through documentation (magazines, etc.) or via ap-

propriate satellite tracking software. In the wrong mode, you cannot use the satellite even if you re-

ceive its beacon signal. 4. When you use a reverse tracking satellite in SSB mode, use the LSB for the uplink frequency and USB for the downlink frequency. When using a normal tracking satellite in SSB mode, use USB for both the uplink and downlink frequencies. I Entering into the satellite mode Operating frequencies in satellite mode can be set both before and after entering into the satellite mode. Normal and reverse tracking are available. Transferring the VFO frequency to the satellite VFO q Set the downlink frequency (receive) in the MAIN band. w Set the uplink frequency (transmit) in the SUB band. e Push [SATELLITE] for 1 sec. to transfer the fre-

quencies, set in steps q and w, into the satellite VFO. Satellite mode is automatically selected after transfer-

ring. SATL indicator with either NOR or REV indicator ap-

pears. VFO and memory mode indications are displayed in the SUB band (lower area) during satellite mode. 48

[SATELLITE] for 1 sec. SATELLITE OPERATION 8 I Setting the satellite VFO q Push [SATELLITE] to enter the satellite mode. SATL indicator with either NOR or REV indicator ap-

pears. w Push [V/M 1] to toggle satellite VFO and memory mode. VFO or memory mode indicator is displayed in the SUB band (lower area). e Push [SCAN . ] to enable the downlink frequency tuning. Uplink frequency indication disappears. Rotate the tuning dial to set the downlink frequency and push [SSB/CW] to select the operating mode. Push [SCAN . ] again after the tuning. r Push [SWP 0 ] to enable the uplink frequency tuning. Downlink frequency indication disappears. Push [SWP 0 ] again after the tuning. USBUSB S 1 3 5 7 9 20 40 60dB LSB MEMO SATL REV USBUSB S 1 3 5 7 9 2020 4040 60dB60dB S 1 3 5 7 9 20 40 60dB LSB MEMO SATL REV S 1 3 5 7 9 2020 4040 60dB60dB NOTE: To select the operating mode for the uplink, push [SUB] to enable the SUB band access. I Tracking selection Push [F-INP ENT tween normal and reverse tracking. NOR REV

] for 1 sec. to switch be-

Normal tracking Both downlink and uplink frequencies increase or de-

crease in the same step simultaneously by tuning dial rotation.

[F-INP ENT]

Reverse tracking The downlink frequency follows the tuning dial rotation, however, the uplink frequency changes in the reverse direction to the tuning dial rotation in the same step. USBUSB S 1 3 5 7 9 20 40 60dB NOR SATL REV LSB MEMO S 1 3 5 7 9 2020 4040 60dB60dB

[SATELLITE]

Satellite mode indication Varies simultaneously 49 8 SATELLITE OPERATION I Preparation q Decide on a usable satellite. w Conrm the approximate location of the satellite and operating mode (e.g. B, J, etc.) through docu-

mentation (magazine, etc.) or via appropriate satel-

lite tracking software. e Set the antenna direction for the desired satellite. r Select satellite mode on the transceiver. Push [SATELLITE]. Push [F-INP ENT ing mode if desired. NOR REV t Select operating mode.

] for 1 sec. to select track-

Satellite Reverse tracking type Normal tracking type Downlink

(MAIN band) USB (or CW) USB (or CW) Uplink

(SUB band) LSB (or CW) USB (or CW) u Perform a loop test. Set the downlink frequency (MAIN band) to a vacant fre-

quency within the satellites coverage. Push [SWP 0 ] then, set the uplink frequency (SUB band) while transmitting a single tone such as a whistle to nd your downlink signal and monitor your own signal correctly. Push [SWP 0 ] after setting. USBUSB S 1 3 5 7 9 20 40 60dB LSB MEMO SATL REV S 1 3 5 7 9 2020 4040 60dB60dB Downlink (receive) frequency USBUSB NOTE: To avoid excessive power, set the output power so that the downlink signal strength is lower than the beacons strength. USBUSB S 1 3 5 7 9 20 40 60dB LSB NOR SATL REV S 1 3 5 7 9 2020 4040 60dB60dB MEMO S 1 3 5 7 9 20 40 60dB LSB MEMO SATL REV Satellite mode indication Uplink (transmit) frequency S 1 3 5 7 9 2020 4040 60dB60dB y Set the downlink frequency (MAIN band) to the bea-

con frequency. Refer to a ham magazine or book for detailed informa-

tion. Adjust the antenna direction so that the S-meter shows to its strongest level. The S-meter level should be noted for transmit power adjustment during a loop test. USBUSB S 1 3 5 7 9 20 40 60dB USB MEMO SATL REV S 1 3 5 7 9 2020 4040 60dB60dB i Set the desired frequency to begin your satellite communications. Both the downlink and uplink frequencies are changed simultaneously. o When your downlink audio drifts (Doppler effect), push [SWP 0 ] then rotate the tuning dial to ad-

just the uplink frequency (SUB band) only. Push [SWP 0 ] again after setting. When a particular stations audio is off frequency, use the RIT function (push [RIT]).

!0 To exit the satellite operation, push [SATELLITE]. CONVENIENT: As the transceiver has 10 satellite memory channels, once set, desired satellite fre-

quencies can be recalled instantly. NOTE: As the downlink (MAIN band) signal is ap-

plied to the SUB band unit in-circuitry in satellite mode, an optional FL-133 CW NARROW FILTER is nec-

essary to operate CW-N mode. 50 I Satellite operation When your own signal can be received with a loop test, satellite communication can be performed. q Rotate the tuning dial to re-tune the uplink fre-

quency after pushing [SWP 0 ], when shifting a frequency with the Doppler effect. The downlink frequency readout (MAIN band) disap-

pears. w Rotate the tuning dial to re-tune the downlink fre-

quency after pushing [SCAN . ], when the operat-

ing stations signal frequency is shifted. RIT function can also be used for downlink frequency tuning within 1 kHz range. I Satellite memory The IC-910H has 10 satellite memory channels to memorize both uplink and downlink frequencies and operating modes, etc. Satellite memory selection q Push [SATELLITE] to enter the satellite mode. w Push [V/M 1] to select satellite memory mode. MEMO indicator and memory channel number are dis-

played beside the uplink frequency (SUB band) indica-

tion. Push [V/M 1] again to select satellite VFO. e Push [DN M] or [L UP] to select the desired satel-

lite mode memory channel. The channels 0009 are selectable. By pushing and holding either switch, the satellite mem-

ory channel changes continuously. USBUSB SATELLITE OPERATION 8 Satellite memory programming q Select the desired satellite memory channel. Push [SATELLITE] to enter the satellite mode. Push [V/M 1] to select satellite VFO mode. Push [DN M] or [L UP] to select the desired satellite mode memory channel. w Set the desired downlink frequency to the MAIN band and uplink frequency to the SUB band, as well as operating mode. Push [SCAN . ] for downlink tuning, push [SWP 0 ]

for uplink frequency tuning. Push [SUB] before the operating mode selection when selecting operating mode for the uplink. e Push [MW 4] for 1 sec. to program the set contents to the satellite memory channel. 3 beep tones sound. NOTE: Tracking selection, normal or reverse, is not programmed in the satellite memory channels. S 1 3 5 7 9 20 40 60dB NOR SATL LSB MEMO S 1 3 5 7 9 2020 4040 60dB60dB USBUSB S 1 3 5 7 9 20 40 60dB Satellite memory indication SATL REV LSB MEMO S 1 3 5 7 9 2020 4040 60dB60dB Select the desired satellite memory 51 9 DATA COMMUNICATION I Functions for AFSK The IC-910H does not have an FSK mode for RTTY, AMTOR, PACKET, etc., however, you can operate these using AFSK in SSB or FM mode. The transceiver accepts data speed of up to 9600 bps. When using 9600 bps, set the transceiver to the 9600 bps data mode using the general set mode. (p. 57) When operating AFSK, connect external equipment to the DATA (MAIN or SUB) or ACC socket on the rear panel, or to the microphone connector on the front panel as in the diagram below. I Connections for AFSK Connections via [DATA] socket Use FM mode for 9600 bps operation. Use SSB or FM mode for 1200 bps operation. OPERATION NOTES FOR 9600 bps Set the transceiver to 9600 bps data mode.

- See p. 57. Set AFSK/GMSK output level of the terminal unit to 0.4 V p-p (0.2 V rms).

- When exceeding 0.5 V p-p (0.25 V rms), the trans-

ceivers modulation limiter stops modulation.

- At this time, the [RX/TX] indicators brightness fades. AF output from the transceiver is continuous and is not cut by the squelch circuit. 9600 bps connection 1200 bps connection q DATA IN e PTT Shielding cable w GND r DATA OUT y SQ*

[DATA] socket

(Rear panel view) TNC TX AUDIO GND RX AUDIO PTT SQL*

Shielding cable q DATA IN w GND e PTT y SQ*

t AF OUT

[DATA] socket

(Rear panel view) TNC TX AUDIO GND RX AUDIO PTT SQL*

* Connect the SQL line when required.

* Connect the SQL line when required. Connections via [ACC(1)] socket or [MIC] connector Use FM mode for 9600 bps operation. Use SSB or FM mode for 1200 bps operation. Connection via [ACC(1)] connector

(Rear panel view) 2 8 4 1 6 5 7 3 A B C D E F*

Connection via [MIC] connector

(Front panel view) 2 1 3 8 4 7 5 6 A C B E D F*

A B C D E F AFSK output AF input PTT GND Squelch input TNC TX AUDIO GND RX AUDIO

(1200 bps) PTT GND SQL*

* Connect the SQL line when required. 52 I Operating mode notes Use FM mode for 9600 bps operation. Use SSB or FM mode for 1200 bps operation. DATA COMMUNICATION 9 I Operating frequency notes Operating notes for RTTY and AMTOR RTTY or AMTOR operating frequency in LSB mode differs from the displayed frequency.

[Your operating freq.] = [Displayed freq.] 2125 Hz

(when the frequencies of the RTTY demodulator in your TNC or TU are mark = 2125 Hz and space =

2295 Hz). Operating notes for PACKET PACKET operating frequency in LSB mode differs from the displayed frequency.

[Your operating freq.] = [Displayed freq.] 2125 Hz

(when the frequencies of the PACKET demodulator in your TNC are 2125 Hz/2315 Hz). Frequency setting example for AFSK

- When operating RTTY at 144.090 MHz:

Set LSB 144.092125 MHz (if you use mark=2125 Hz and space=2295 Hz).

- When operating PACKET at 144.110 MHz:

Set 2115 Hz/2315 Hz). 144.112215 MHz LSB you use

(if I AFSK operation Connect external equipment to either the [DATA]

(MAIN or SUB) or [ACC(1)] socket as described on the previous page. Set the ACC socket using the general set mode in advance when you operate via the ACC socket. (See below.) q Push [M/SBAND] to select the desired frequency band. w Push [FM] or [SSB/CW] to select the desired oper-

ating mode. LSB is normally used. FM is used for PACKET. e Adjust the audio output level with [AF] control. Use [RF/SQL] when required. r Adjust the desired RF output power. When using the [MIC] connector for external equipment connection, the [MIC GAIN] control should be adjusted. t Select operating mode. y Control the transceiver from the connected PC or TNC (TU). qSelect band. wSelect desired mode. IMPORTANT:

Remove the microphone from the [MIC] connector when operating below 1200 bps rate to protect from noise coming from the microphone. During 9600 bps rate operation, noise signals from the microphone may not effect PACKET signals. However, PACKET signal transmission is inter-

rupted when [PTT] is pushed. Remove the ACC plug, or turn the TNC power OFF during phone operation (SSB or FM). The modula-

tion input from the [ACC(1)] socket is always ap-

plied to the modulation circuit. Connections via front panel When connecting a TNC or Scan converter, etc. to the

[MIC] connector, [MIC GAIN] and [AF] adjustments are required. The [MIC] connector accepts up to 1200 bps. Use SSB or FM mode for operation.

[MIC GAIN] and [AF] control adjustments are re-

quired. eAdjust for max. detected level. 53 9 DATA COMMUNICATION Adjusting the transmit signal output from the TNC When setting the data transmission speed to 9600 bps, the data signal coming from the TNC is applied exclusively to the internal limiter circuitry to control the transmission. NEVER apply data levels from the TNC of over 0.6 V p-p, otherwise the transceiver automatically cancels the transmission. 1. When using a level meter or synchroscope, ad-

just the TX audio output level (DATA IN level) from the TNC as follows. 0.4 V p-p (0.2 V rms): recommended level 0.20.5 V p-p (0.10.25 V rms): acceptable level 2. When NOT using a measurement device. q Connect the transceiver to a TNC. w Enter a test mode (CAL, etc.) to the TNC, then transmit some test data. e When the transceiver fails to transmit the test data or transmits sporadically (TX indicator does not 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. I Setting the ACC socket When operating AFSK, set the specifications of the ACC socket to fit your TNC or scan converter in ad-

vance. q Push [SET] for 1 sec. to enter the set mode. w Push [DN M] or [L UP] to select the 9600 bps data mode setting item, then rotate the tuning dial to turn the 9600 bps rate ON and OFF Push [SWP 0] again after setting. 9600 is displayed. 9600 bps data rate is selected when ON, and a slower data rate is selected when OFF is selected. Push [M-CL 5] for 1 sec to return to the default setting. e Push [L UP] to select ACC socket pins 5 and 6 set-

ting item, then rotate the tuning dial to select from nor (normal) and Sub (sub). ACC P5.6 is displayed. When nor (normal) is selected, the ACC socket (pins 5 and 6) outputs MAIN band signals. When Sub is se-

lected, the ACC socket outputs SUB band signals. Push [M-CL 5] for 1 sec to return to the default setting. 54 NOTE: Select nor (normal) when operating data mode in satellite mode. r Push [L UP] to select the modulation signal input level setting item, then rotate the tuning dial to se-

lect from HI and Lo (sub). ACC.t-AF is displayed. HI: 200 mV rms, Lo: 2 mV rms Push [M-CL 5] for 1 sec to return to the default setting. This setting is ignored when 9600 bps data mode (w) is selected and 1.0 V p-p is set as a xed value. t Push [SET] to exit from the set mode. SET MODE 10 SCAN e Push [DN Z] or [UP Y] to select the desired item. r Set the desired condition using the tuning dial. Push [M-CL 5] for 1 sec. to select a default condition or value. SCAN SCAN t Push the applicable switch, pushed in step w, or

[SET] to exit the set mode. FM VFO A S 1 3 5 7 9 20 40 60dB60dB FM VFO A S 1 3 5 7 9 2020 4040 60dB60dB I Set mode description Set mode is used for programming infrequently changed values or conditions of functions. The IC-910H has a regular set mode and additional 12 in-

dependent set modes for simple condition changing. Set mode operation q Push [SET] for 1 sec. to enter the general set mode. w Push [DN Z] or [UP Y] to select the desired item. e Set the desired condition using the tuning dial. Push [M-CL 5] for 1 sec. to select a default condition or value. r Push [SET] to exit the set mode. Independent set mode operation q Push [SET]. FM S 1 3 5 7 9 20 40 60dB60dB FM S 1 3 5 7 9 2020 4040 60dB60dB VFO A SET VFO A w Push 1 of following switches/keys to enter the inde-

pendent set mode.

[SPCH], [FM], [SSB/CW], [SCAN], [MPW], [COMP],

[VOX], [TRANSMIT], [NR], [RIT], [ATT], [SWP]

SET MODE FLOW CHART q w e r Push [SET] for 1 sec. General set mode appears. Select set mode item. Select condition. Exit set mode. Tuning dial Push applicable key or [SET] key. q w Push [SET] momentarily. Independent set mode appears. applicable Push applicable key e r t Select set mode item. Select condition. Exit set mode. applicable Tuning dial Push applicable key or [SET] key. applicable keys 55 10 SET MODE I General set mode Display backlight brightness Adjust backlight brightness for the function display to the desired level within 0 (dark) to 100 (bright) range. Beep tone Adjust key touch beep output level to the desired level within 0 (no output) to 100 (max. output) range. RF/SQL control assignment Assign [RF/SQL] control function from rF/SqL, Auto and SqL. rF/SqL : RF gain and squelch controls are combined for SSB/CW mode. Acts as squelch control for FM mode. Auto : Acts as either an RF gain or squelch control SqL depending on operating mode.

: Acts as squelch control for all modes. RF gain is set to maximum level in this setting. Peak hold function Turn the S-meter peak hold function ON or OFF. The peak level is indicated for approx. 0.5 sec. when this function is activated. 56 SET MODE 10 9600 9600 Microphone UP/DN speed Select continuous changing speed with microphones

[UP]/[DN] operation from high and low. Tuning step selection Below 1 kHz 50 steps/sec. 25 steps/sec. Above 1 kHz below 1 MHz 20 steps/sec. 10 steps/sec. 5 steps/sec. 2.5 steps/sec. 1 MHz or Memory Channel Lo HI 9600 bps data transmission Turn the 9600 bps data transmission capability ON and OFF. on oFF

: For 9600 bps data transmission.

: For the regular audio (or slower data) trans-

mission only. Auto TS function Turn the auto TS function ON and OFF. This function temporarily changes tuning step when rotating the tuning dial quickly. The auto TS function automatically selects a 10 or 50 Hz tuning step, when 1 or 10 Hz tuning step is used for regular operation, respectively. Fine tuning indication Turn the ne tuning indication (10 and 1 Hz digit indi-

cation) during the tuning dial rotation ON and OFF. Headphone audio Switch the audio output separation capability for the headphones ON and OFF. on

: The MAIN and SUB band audio is sepa-

rated in right (MAIN) and left (SUB) chan-

nels when using stereo headphones.

: The MAIN and SUB band audio is mixed. oFF ACC socket Pin 5 and Pin 6 Select the band for output signals from the ACC socket pins 5 (AF) and 6 (SQL) from normal and sub. nor Sub

: Outputs MAIN bands signals.

: Outputs SUB bands signals. 57 10 SET MODE ACC socket Pin 8 Assign the ACC socket pin 8 action/connection from ALC and microphone up/down. ALC : Inputs ALC signal. ud

: Inputs up/down signals from the microphone. ACC socket Pin 4/DATA socket Pin 1 Select modulation signal input level from high and low. HI : High modulation signal level (200 mV rms) Lo : Low modulation signal level (2 mV rms) ACC socket Pin 3 for 144 MHz band Switch the SEND signal output for 144 MHz band op-

eration ON and OFF. ACC socket Pin 3 for 430(440) MHz band Switch the SEND signal output for 430(440) MHz band operation ON and OFF. ACC socket Pin 3 for 1200 MHz band Switch the SEND signal output for 1200 MHz band operation ON and OFF. Preamplier controller for 144 MHz Switch the preamplifier control capability ON and OFF. When using the optional AG-25, ON must be se-

lected. Otherwise, the preamplier is never activated. DO NOT connect any equipment, such as an SWR or power meter, between the transceiver and pre-

amplier. In such case, the preamplier may not ac-

tivate properly. 58 P.AMP P.AMP Preamplier controller for 430(440) MHz Switch the preamplifier control capability ON and OFF. When using the optional AG-35, ON must be se-

lected. Otherwise, the preamplier is never activated. DO NOT connect any equipment, such as an SWR or power meter, between the transceiver and pre-

amplier. In such case, the preamplier may not ac-

tivate properly. Preamplier controller for 1200 MHz Switch the preamplifier control capability ON and OFF. When using the optional AG-1200, ON must be selected. Otherwise, the preamplifier is never acti-

vated. DO NOT connect any equipment, such as an SWR or power meter, between the transceiver and pre-

amplier. In such case, the preamplier may not ac-

tivate properly. CI-V address To distinguish between equipment, each CI-V trans-

ceiver has its own Icom standard address in hexa-

decimal code. The IC-910Hs address is 60H. When 2 or more IC-910Hs are connected to an op-

tional CT-17 CI-V LEVEL CONVERTER, select a different address for each IC-910H in the range 01H to 7FH. CI-V baud rate Select transfer rate for CI-V remote control from Auto, 300, 1200, 4800, 9600 and 19200 bps. CI-V transceive Transceive operation is possible with the IC-910H connected to other Icom transceivers or receivers. When on is selected, changing the operating fre-

quency, operating mode, etc. on the IC-910H auto-

matically changes those of connected transceivers (or receivers) and vice versa. SET MODE 10 P.AMP P.AMP P.AMP P.AMP 59 10 SET MODE I FM set mode Offset frequency for 144 MHz Set the offset frequency for duplex (repeater) opera-

tion within 010.00000 MHz range. This item is displayed when the 144 MHz band is ac-

cessed, including the SUB band access capability. Default value: 0.6000 Offset frequency for 430(440) MHz Set the offset frequency for duplex (repeater) opera-

tion within 010.00000 MHz range. This item is displayed when the 430(440) MHz band is accessed, including the SUB band access capabil-

ity. Default value: 5.0000 Offset frequency for 1200 MHz Set the offset frequency for duplex (repeater) opera-

tion within 0100.00000 MHz range. This item is displayed when the 1200 MHz band is ac-

cessed, including the SUB band access capability. Default value: 20.0000 Tone encoder frequency for 144 MHz

(non-European versions) Select tone encoder frequency for accessing a re-

peater, etc. from one of 50 available tone frequencies. This item is displayed when the 144 MHz band is ac-

cessed, including the SUB band access capability. Default value: 88.5 Tone encoder frequency for 430(440) MHz

(non-European versions) Select tone encoder frequency for accessing a re-

peater, etc. from one of 50 available tone frequencies. This item is displayed when the 430(440) MHz band is accessed, including the SUB band access capability. Default value: 88.5 Tone encoder frequency for 1200 MHz

(non-European versions) Select tone encoder frequency for accessing a re-

peater, etc. from one of 50 available tone frequencies. This item is displayed when the 1200 MHz band is ac-

cessed, including the SUB band access capability. Default value: 88.5 60 FM FM FM FM FM FM T T T SET MODE 10 Tone squelch frequency for 144 MHz Select tone squelch frequency from one of 50 avail-

able tone frequencies. This item is displayed when the 144 MHz band is ac-

cessed, including the SUB band access capability. Default value: 88.5 Tone squelch frequency for 430(440) MHz Select tone squelch frequency from one of 50 avail-

able tone frequencies. This item is displayed when the 430(440) MHz band is accessed, including the SUB band access capabil-

ity. Default value: 88.5 Tone squelch frequency for 1200 MHz Select tone squelch frequency from one of 50 avail-

able tone frequencies. This item is displayed when the 1200 MHz band is ac-

cessed, including the SUB band access capability. Default value: 88.5 FM T

-SQSQL FM T

-SQSQL FM T

-SQSQL One-touch repeater shift direction

(non-European versions) Select shift direction for one-touch repeater function from DUP and DUP+. DUPDUP DUPDUP FM FM Auto repeater function

(U.S.A. and Korea versions) Turn the auto repeater function ON and OFF. To activate the auto repeater function, ON must be selected in this setting after programming the auto re-

peater frequency range. (p. 34) U.S.A. version:

on1 on2 oFF Activates duplex only. Activates duplex and tone. Auto repeater function is turned OFF. FM center indicator Turn the FM center indication ON and OFF. When the indication is turned ON and the received signal is off-center in FM mode, the receive indicator

(green) ashes. Korea version:

ON OFF Auto repeater function is turned OFF. Activates duplex and tone. FM FM FM FM 61 10 SET MODE I SSB/CW set mode Squelch threshold Select the squelch threshold level from 12 and 13 o-

clock. 12 : The squelch closes around the 12 oclock po-

sition of the [SQL] control. 13 : The squelch closes around the 13 oclock po-

sition of the [SQL] control. Carrier frequency Adjust the carrier frequency for SSB (USB/LSB) mode operation within 200 to +200 Hz range in 10 Hz steps. USB LSB USB LSB CW pitch frequency Adjust the CW pitch frequency within 300 to 900 Hz range in 10 Hz steps. CW CW keying speed adjustment Adjust the built-in electric keyer keying speed to the desired level within 6 to 60 WPM range. Semi break-in Turn the semi break-in function ON and OFF. CW break-in delay Adjust the CW break-in delay time to the desired level within 2.0 to 13.0 sec. range in 0.1 sec. steps. 62 CW CW CW CW CW CW SET MODE 10 CW CW CW CW CW CW AF control relation Turn the relation of [AF] control for CW side tone out-

put level ON and OFF. on

: CW side tone output level is adjustable via

[AF] control adjustment.

: CW side tone output level is xed regardless of [AF] control setting. oFF CW side tone output level Adjust the CW side tone output to the desired level within 0 (no output) to 100 (maximum output) range. Key type Select the key type from normal, reverse, bug, OFF and microphone [UP]/[DN]. n r

: Use built-in electronic keyer.

: Use built-in electronic keyer with reversed polarity. buG : Use built-in electronic keyer as bug key. oFF ud

: Use external electronic keyer or straight key.

: Use microphones [UP]/[DN] as a paddle. CW dot-dash ratio Adjust the CW dot-dash ratio to the desired level within 1:1:2.8 to 1:1:4.5 range. CW C/N type for 1200 MHz Select the C/N type for the 1200 MHz band operation from type 1 and 2. tyPE 1 : Provides better characteristics for nearby in-

terference in FM mode operation. tyPE 2 : Provides lower noise level just around the signal in SSB/CW mode operation. This item is displayed only when the optional UX-910 is installed. USBUSBLSBLSB CW FM 63 10 SET MODE I Scan set mode Programmed scanning range Select the programmed scan range from 1A-1b, 2A-

2b and 3A-3b. 1A-1b : Scans within the range programmed in the memory channel 1A and 1b. 2A-2b : Scans within the range programmed in the memory channel 2A and 2b. 3A-3b : Scans within the range programmed in the memory channel 3A and 3b. Scan resume condition Select the scan resume condition from ON and OFF. on oFF

: Scan resumes.

: Scan cancels when a signal is received. Scanning speed Select the scanning speed from high and low. Scan type Memory scan (Mode select) Prog. scan (TS<1 kHz) Prog. scan (TS>1 kHz) Tone scan HI Lo 20 CH/sec. 10 CH/sec. 50 steps/sec. 25 steps/sec. 20 steps/sec. 10 steps/sec. 20 steps/sec. 10 steps/sec. I Memo pad set mode Number of memo pad channels Select the number of memo pad channels available from 5 and 10. 5 10

: 5 memo pad channels can be used.

: 10 memo pad channels can be used. SCAN SCAN SCAN SCAN SCAN SCAN I Compressor set mode Compression level Adjust the compression level for the speech com-

pressor to the desired level within 0100% range. COMPMP 64 I VOX set mode VOX sensitivity Adjust the VOX sensitivity within 0100% range. VOX delay time Adjust the transmit-to-receive switching delay to the desired level within 0.0 sec. to 2.0 sec. range in 0.1 sec. steps. Anti VOX Adjust the anti VOX gain within 0100% range. I Attenuator set mode Attenuation level for 144 MHz Adjust the attenuation level to the desired level within 0100% range for the 144 MHZ band operation. Attenuation level for 430(440) MHz Adjust the attenuation level to the desired level within 0100% range for the 430(440) MHZ band operation. SET MODE 10 VOX VOX VOX 65 10 SET MODE I Transmit set mode Time-out timer Select the time period for the time-out timer function from OFF, 3, 5, 10, 20 and 30 min. PTT lock Turn the transmission inhibit capability ON and OFF. Any control for transmission is inhibited when this item is ON. SUB band mute Turn the SUB band audio mute function ON and OFF. The SUB band audio is muted while transmitting when this function is turned ON. SUB SUB 66 I NR set mode Noise reduction level for 144 MHz Adjust the noise reduction level to the desired level within 015 for the 144 MHz band operation. Adjust it to the level that noise signals are reduced, and received audio has no distortion. This item is displayed only when the optional UT-106 is installed. Noise reduction level for 430(440) MHz Adjust the noise reduction level to the desired level within 015 for the 430(440) MHz band operation. Adjust it to the level that noise signals are reduced, and received audio has no distortion. This item is displayed only when the optional UT-106 is installed. Noise reduction level for 1200 MHz Adjust the noise reduction level to the desired level within 015 for the 1200 MHz band operation. Adjust it to the level that noise signals are reduced, and received audio has no distortion. This item is displayed only when the optional UT-106 is installed. I SWP set mode Sweeping interval Select the sweeping interval for the simple band scope function from 3, 5 and 10 sec. NR NR NR SWP SET MODE 10 67 10 SET MODE I RIT/SHIFT set mode RIT control assignment Assign [RIT] control function from rit, dIAL, SubdIAL and Sub-SFt. rit dIAL

: [RIT] control functions as RIT control.

: [RIT] control functions as tuning dial for MAIN band. SubdIAL : [RIT] control functions as tuning dial for Sub-SFt SUB band.

: [RIT] control functions as IF shift control for SUB band. SHIFT control assignment Assign [SHIFT] control function from SFt, Sub-SFt, dIAL and SubdIAL. SFt

: [SHIFT] control functions as IF shift con-

trol.

: [SHIFT] control functions as IF shift con-

trol for SUB band.

: [SHIFT] control functions as tuning dial for MAIN band. Sub-SFt dIAL SubdIAL : [SHIFT] control functions as tuning dial for SUB band. RIT indication Turn the RIT adjusting value indication ON and OFF. The value is displayed while adjusting when this func-

tion is turned ON. 68 I Speech set mode Output level Adjust the speech audio output level within 0 (no out-

put) to 100 (maximum output) range. Default value: 50 Announcement language Select the announcement language from English, Japanese and OFF. EnG : Announces in English. JPn oFF

: Announces in Japanese

: No announcement. Announcement speed Select the announcement speed from high and low. HI Lo

: Faster announcement.

: Slower announcement. S-meter level announcement Turn the S-meter level announcement capability ON and OFF. on

: Announces S-meter level with the operating frequency and mode.

: Announces the operating frequency and mode only. oFF SET MODE 10 69 11 OPTION INSTALLATIONS I Internal view Top view PA unit DC power connector Bottom view PLL/MAIN unit PLL unit DSP unit PLL ref. signal

(for UX-910) DSP unit 70 Circuitly fuse

(FGB 4 A) Cooling fan J1801 for UT-102 connection SSB filter

(MAIN band) CW-N filter

(MAIN band) CW-N filter

(SUB band) SSB filter

(SUB band) MAIN unit OPTION INSTALLATIONS 11 I Opening the transceivers case Follow the case and cover opening procedures shown here when you want to install an optional unit or adjust the internal units, etc. q Remove the 5 screws from the top of the transceiver and the 4 screws from the sides, then lift up the top cover. w Turn the transceiver upside down. e Remove the 5 screws from the bottom of the transceiver, then lift up the bottom cover. CAUTION: DISCONNECT the DC power cable from the transceiver before performing any work on the transceiver. Otherwise, there is a danger of electric shock and/or equipment damage. Disconnect the speaker cable. Opening the PA unit cover q Remove the 8 screws and grounding plate from the PA unit cover. w Remove fastening tape from the inside power cable. grounding plate e Slide the PA unit cover as shown below. I UT-102 VOICE SYNTHESIZER UNIT The UT-102 announces the accessed readouts fre-

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

nouncedp. 69) in a clear, electronically-generated voice, in English (or Japanese). Push [SPCH] to announce the frequency, etc. q Remove the bottom cover as shown above. Remove the UX-910 if you have installed it. (p. 73) w Remove the protective paper attached to the bottom of the UT-102 to expose the adhesive strip. e Plug UT-102 into J1801 on the MAIN unit as shown in the diagram at right. r Return the bottom cover to its original position. t Set the speech level, announcement language and S-meter announcement in the speech set mode

(p. 69) if desired. UT-102 J1801 MAIN unit 71 11 OPTION INSTALLATIONS I UT-106 DSP UNIT The UT-106 provides AF DSP functions such as noise reduction and auto notch. Up to 2 DSP units can be installed for simultaneous DSP operation for both MAIN and SUB bands. When only 1 DSP unit is installed, DSP functions can be operated in either the MAIN or SUB band, whichever is being accessed. RECOMMENDATION:

When installing only 1 DSP unit, you can install into either front or rear panel side. However, installing a DSP unit into the front panel side may be easier and also safer. Installing 1st DSP unit (front panel side) q Remove the top and bottom covers. Remove the UX-910 if you have installed it. (p. 73) w Remove the shielding plate. e Remove the connection cable from J1751 on the MAIN unit. Connect the cable into J1 on the UT-106. r Plug the connection cable (P1) from the UT-106 to J1751 on the MAIN unit. t Plug the flat cable into J3 on the UT-106 and to J1771 on the MAIN unit. Take care of the conductor direction. Attach the Velcro tape to the UT-106 and PLL unit shield-

ing plate. y Return the shielding plate, top cover and bottom cover to their original positions. Shielding plate PLL unit UT-106 J3 J1 J1771 P1 J1751 Take care of the conductor direction. MAIN unit Installing 2nd DSP unit (rear panel side) q Remove the top and bottom covers. Remove the UX-910 if you have installed it. (p. 73) w Remove the shielding plate. e Remove the connection cable from J1761 on the MAIN unit. Connect the cable into J1 on the UT-106. The cable between J1221 on the MAIN and J1 on the DSP unit, must be set in the groove of the chassis (see diagram below). Otherwise, the cable may be damaged when re-

turning the shield plate to its original position. r Plug the connection cable (P1) from the UT-106 to J1761 on the MAIN unit. t Plug the flat cable into J3 on the UT-106 and to J1781 on the MAIN unit. Take care of the conductor direction. Attach the Velcro tape to the UT-106 and PLL unit shield-

ing plate. y Return the shielding plate, top cover and bottom cover to their original positions. Set cable into the groove. J1 Shielding plate PLL unit UT-106 J3 J1 J1781 P1 J1761 Take care of the conductor direction. MAIN unit 72 OPTION INSTALLATIONS 11 r Place the UX-910 using the supplied 4 screws. BE CAREFUL not to drop the supplied screws inside the transceiver. Antenna plate UX-910 UX-910 J2 MAIN unit Flexible flat cable Turn the flexible flat cable up under the UX-910. t Return the bottom cover to its original position. I UX-910 1200 MHz BAND UNIT The UX-910 is a band unit for 1200 MHz band opera-

tion. FM, SSB (USB/LSB), CW and CW narrow mode operations are available. q Remove the bottom cover as shown in the diagram on p. 71. w Remove the antenna plate from the chassis using a standard screw driver. WARNING!

NEVER attempt to remove the antenna plate using your nger, this may result in injury. e Connect the FFC (Flexible Flat Cable) of the UX-910 to J2 on the MAIN unit, DC power cable to the power connector (W305) from the PA unit and the coaxial cable to the J541 on the PLL unit. CAUTION NEVER catch the cables from the optional DSP unit(s) between chassis and the UX-910, this may damage the DSP unit(s) and/or transceiver. Coaxial cable PLL unit J541 UX-910 DC power cable J2 Flexible flat cable Power connector 73 11 OPTION INSTALLATIONS I CR-293 HIGH STABILITY CRYSTAL UNIT By installing the CR-293, the total frequency stability of the transceiver will be improved. q Remove the bottom cover as shown in the diagram on p. 71. Remove the UX-910 if you have installed it. (p. 73) w Remove the 6 screws from the PLL shield cover, then lift up the PLL shield cover. t Unsolder the original reference crystal, then remove it. The original reference crystal unit is soldered at both top and bottom sides of the PCB (Printed Circuit Board). Unsolder the original crystal. CR-293 Original crystal J501 J1051 PLL shield cover Flexible flat cable e Disconnect the FFC (Flexible Flat Cable) from the DISPLAY unit and the connection cable connectors from J501 and J1051 on the MAIN unit. r Remove the 5 screws from the PLL unit, then lift up the PLL unit. y Install the CR-293 and solder the leads. u Return the PLL unit, PLL shield cover and bottom cover to their original positions. Original crystal soldering point CR-293 soldering points 74 OPTION INSTALLATIONS 11 t Install FL-132 or FL-133 to the specied position on the MAIN unit. FL-132

(MAIN) FL-133

(SUB) y Solder then cut the leads, keeping 23 mm (18) of the leads from the bottom of the MAIN unit. u Return the MAIN unit and clips to their original po-

sitions. i Re-connect the connection cable connector to J501 and J1051 on the MAIN unit. o Return the bottom cover to the original position.

(MAIN)

(SUB) I FL-132/FL-133 CW NARROW FILTER The IC-910H has a CW narrow mode to provide better S/N (Signal-to-Noise), or to reject interference. To op-

erate the CW narrow mode, an optional CW narrow l-

ter is necessary. NOTE: For CW narrow mode during satellite opera-

tion, the FL-133 (for SUB band lter) is necessary since the SUB band circuit is used for receiving, al-

though the MAIN band display shows receive fre-

quency. FILTER Built-in lter FL-132/133 Passband width at 6 dB 2.3 kHz 500 Hz at 60 dB 4.2 kHz 1.34 kHz q Remove the bottom cover as shown in the diagram on p. 71. Remove the UX-910 if you have installed it. (p. 73) w Disconnect the connection cable connectors from J501 and J1051 on the MAIN unit. e Remove the 2 clips. WARNING!

BE CAREFUL not to pinch your finger with the clip. r Remove the 6 screws from the MAIN unit, then lift up the MAIN unit. PLL unit MAIN unit J501 J1051 Clips 75 11 MAINTENANCE I Troubleshooting 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. PROBLEM POSSIBLE CAUSE SOLUTION Power does not come on when [POWER] is pushed. DC power cable is improperly connected. Fuse is blown. No sounds comes from the speaker. Volume level is too low. The squelch is closed. The transceiver is in the transmitting condition. Sensitivity is low. The antenna is not connected properly. The attenuator is activated. The S-meter squelch is activated. Received audio is dis-

torted. Incorrect sideband (USB/LSB) is selected. Receiving an FM signal. Noise blanker is activated. Noise reduction is activated. Transmitting is impossible. PTT lock function is activated. Reconnect the DC power cable correctly. Check the cause, then replace the fuse with a spare one. (Fuses are installed in the DC power cable and the internal PA unit.) Rotate [AF] clockwise to obtain a suitable listen-

ing level. Rotate [RF/SQL] to 12 oclock position to open the squelch. Push [TRANSMIT] to receive or check the SEND line of an external unit, if desired. Reconnect to the antenna connector. Push [ATT] to turn the attenuator OFF. Rotate [RF/SQL] to the position where the noise just disappears. Switch USB and LSB by pushing [SSB/CW] for 1 sec. Push [FM] to select FM mode. Push [AFC/NB] to turn the noise blanker function OFF. Set the noise reduction level in the NR set mode for maximum readability using

[SET] and

[AFC/NBNR], or turn OFF the function by push-

ing [AFC/NBNR] for 1 sec. Turn the PTT lock function OFF in the TRANSMIT set mode using [SET] and [TRANSMIT]. Output power is too low.

[RF PWR] is set too far counterclockwise.

[MIC GAIN] is set too far counterclockwise. Rotate [RF PWR] clockwise. Rotate [MIC GAIN] clockwise. No contact possible with another station. Split frequency operation or duplex operation is activated. RIT function is activated. Push [SPLIT] momentarily or for 1 sec. to turn the split or duplex function OFF. Push [RIT] to turn the RIT function OFF. Transmitted signals are distorted. Repeater cannot be ac-

cessed.

[MIC GAIN] to far clockwise. Set [MIC GAIN] to a suitable level. Duplex operation is not activated. No subaudible tone or incorrect tone frequency is selected. Push [SPLITDUP] for 1 sec. to turn duplex oper-

ation ON. Push [TONE] to activate the subaudible tone or select a suitable tone frequency in the FM set mode using [SET] and [FM]. Programmed scan does not start. VFO mode is not selected.

[RF/SQL] is assigned to RF gain and squelch is opened. Push [V/M 1] to select VFO mode. Reset [RF/SQL] control assignment and set it to the threshold point. Memory scan does not start. Memory mode is not selected. No memory channels are programmed. Mode select scan does not start. Mode select scan mode has not been selected. Only one channel is programmed with the se-

lected operating mode. No announcement when

[SPCH] is pushed. The voice synthesizer unit has not been in-

stalled. The announcement level is set to 0 or too low. The announcement language is set to oFF. Push [V/M 1] to select memory mode. Program desired frequencies into memory chan-

nels. Push [SPCHLOCK] for 1 sec. on the desired op-

erating mode programmed channel. Program more than two channels with the desired operating mode. Install the optional vice synthesizer unit, UT-102. p. 71 Set the announcement level to a suitable level in the SPCH set mode using [SET] and [SPCH]. Set the announcement language to Eng (or JPn) in the SPCH set mode using [SET] and [SPCH]. p. 69 p. 69 The displayed frequency does not change properly. The dial lock function is activated. The internal CPU has malfunctioned. Push [SPCHLOCK] to turn the lock function OFF. Reset the CPU. p. 25 p. 77 REF. p. 77 p. 26 p. 26 pgs. 2, 13 p. 29 p. 26 p. 23 p. 23 p. 30 p. 31 p. 66 p. 32 p. 32 p. 37 p. 27 p. 32 p. 34 p. 35 p. 21 p. 26 p. 40 p. 41 p. 47 p. 41 R E W O P I E V E C E R I T M S N A R T N A C S H C E E P S Y A L P S D I 76 MAINTENANCE 11 DC POWER CABLE FUSE REPLACEMENT 30 A fuse Circuitry fuse (4 A)

[POWER]

[MW 4] [M-CL 5]

I 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-910H has 2 types of fuses installed for trans-

ceiver protection. DC power cable fuses ................................ FGB 30 A Circuitry fuse ................................................ FGB 4 A CIRCUITRY FUSE REPLACEMENT The 13.8 V DC from the DC power cable is applied to all units in the IC-910H, except for the power ampli-

er, through the circuitry fuse. This fuse is installed in the PA unit. q Remove the top cover as shown on p. 71. w Remove the 11 screws from the PA shielding plate, then remove the plate. e Replace the circuitry fuse as shown in the diagram at right. r Replace the PA shielding plate and top cover. I CPU resetting Resetting CLEARS all programmed contents in memory channels and returns programmed values in set mode to default values. When first applying power or when the function seems to be displaying erroneous information, reset the CPU as follows:

q Make sure the transceiver power is OFF. w While pushing [MW 4] and [M-CL 5], push

[POWER] to turn power ON. The internal CPU is reset. The transceiver displays its initial VFO frequencies when resetting is complete. 77 13 CONTROL COMMAND I Remote jack (CI-V) information 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-

cations Interface-V (CI-V) controls the following func-

tions of the transceiver. Up to 4 Icom CI-V transceivers or receivers can be connected to a personal computer equipped with an RS-232C port. See p. 59 for setting the CI-V condition using set mode. 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 or sub command is added for some commands. IC-910H BC-25

(optional) 915 V DC personal computer ct- 17 mini-plug cable CONTROLLER TO IC-910H OK MESSAGE TO CONTROLLER q w e r t y FE FE 60 E0 Cn Sc Data area 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 l e b a t e e s

(

d n a m m o c 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 IC-910H TO CONTROLLER q w e r t y FE FE E0 60 Cn Sc Data area 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 78 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 u FD

) d e x i f

(

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

) d e x i f

(

e d o c e g a s s e m f o d n E FE FE E0 60 FB FD

) 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 NG MESSAGE TO CONTROLLER FE FE E0 60 FA FD

) 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 Command Sub command Description Command Sub command Description CONTROL COMMAND 13 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 00 01 03 04 00 01 A0 B0 D0 D1 010106*

00 01 D0 D3 00 01 10 11 12 00 01 02 03 04 05 06 07 08 09 10 11 00 20 Send frequency data for trans-

ceive. Send mode data for transceive. Read band edge frequencies. Read operating frequency data. Read operating mode data. Set operating frequency. Set LSB. Set USB. Set CW. Set FM. Select VFO mode. Select VFO A. Select VFO B. Equalize VFO A and VFO B. Switch VFO A and VFO B. Select MAIN VFO. Select SUB VFO. Select memory mode. Select memory channel.

*1A=0100 1b=0101 2b=0103 2A=0102 3A=0104 3b=0105 Call=0106 Memory write. Transfer memory contents to VFO. Memory clear. Read duplex offset frequency. Set duplex offset frequency. Cancel scan. Start scan. Set scan resume OFF. Set scan resume ON. Turn the split function OFF. Turn the split function ON. Set simplex operation. Set DUP operation. Set DUP+ operation. Set 1 Hz tuning step. Set 10 Hz tuning step. Set 50 Hz tuning step. Set 100 Hz tuning step. Set 1 kHz tuning step. Set 5 kHz tuning step. Set 6.25 kHz tuning step. Set 10 kHz tuning step. Set 12.5 kHz tuning step. Set 20 kHz tuning step. Set 25 kHz tuning step. Set 100 kHz tuning step. Turn attenuator OFF. Turn attenuator ON. 13 14 15 16 19 00 01 02 01 02 03 04 06 09 0A 0B 0C 0E 0F 01 02 02 12 22 40

+level data 41 42 43 44 46 47 4A 00 00 01 02

+level data 03

+level data 04 1A

+level data 05

+level data 06 07 08 Announce all S-meter levels, displayed frequency and mode. Announce displayed frequency. Announce operating mode.

[AF] level setting (0=max. CCW;

128=center; 255=max. CW).

[RF GAIN] level setting

(0=max. CCW; 255=max. CW).

[SQL] level setting (0=max. CCW; 255=max. CW).

[IF SHIFT] level setting (0=max. CCW; 128=center; 255=max. CW). Set noise reduction level

(0=0%; 255=100%). Set CW pitch (0=300 Hz;

255=900 Hz).

[RF PWR] level setting (0=max. CCW; 128=center; 255=max. CW).

[MIC GAIN] level setting (0=max. CCW; 128=center; 255=max. CW). Key speed setting (0=6 wpm;

255=60 wpm). Set mic. compressor level

(0=0%; 255=100%). Set break-in delay (0=2.0 sec;

255=13.0 sec.). Read squelch condition (open or closed). Read S-meter level. Set pre-amp (0=OFF; 1=ON). Set AGC (0=Slow; 1=Fast). Set noise blanker (0=OFF; 1=ON). Set noise reduction level

(0=OFF; 115=ON). Set auto notch lter

(0=OFF; 1=ON). Set subaudible tone

(0=OFF; 1=ON). Set tone squelch (0=OFF; 1=ON). Set mic. compressor

(0=OFF; 1=ON). Set VOX (0=OFF; 1=ON). Set break-in (0=OFF; 1=ON). Set AFC (0=OFF; 1=ON). Read the transceiver ID. Read/write memory channel. Set satellite memory. Set VOX gain level

(0=0%; 255=100%). Set VOX delay

(0=0 sec.; 20=2.0 sec.). Set anti-VOX

(0=0%; 255=100%). Attenuation level setting

(0=0%; 255=100%). Set RIT (0=OFF; 1=ON; 2=Sub dial). Set satellite mode

(0=OFF; 1=ON). Set simple bandscope

(0=OFF; 1=ON). 79 14 SPECIFICATIONS General Frequency coverage :

Version 144 MHz 430(440) MHz

(Unit: MHz) 1200 MHz*1 U.S.A. Tx: 144.0148.0 Tx: 430.0450.0 Tx: 1240.01300.0 Rx: 136.0174.0*2 Rx: 420.0480.0*3 Rx: 1240.01320.0*4 Europe 144.0146.0 Australia 144.0148.0 Sweden 144.0146.0 1240.01300.0 1240.01300.0 1240.01300.0 430.0440.0 430.0450.0 432.0438.0

*1 Optional UX-910

*2 Guaranteed range is 144.0148.0 MHz.

*3 Guaranteed range is 430.0450.0 MHz.

*4 Guaranteed range is 1240.01300.0 MHz. Mode No. of memory Ch. Antenna connector Usable temp. range Frequency stability

: USB, LSB, CW, FM, FM-N*

*Not available in 1200 MHz

: 212 (99 regular, 6 scan edges, 1 calls for each band) plus 10 satellite memories)

: SO-239 (50 ; VHF) Type-N (50 ; UHF)

: 10C to +60C;

+14F to +140F

: Less than 3 ppm

(10 to 60C; +14 to +140F) Frequency resolution : 1 Hz minimum Power supply

: 13.8 V DC 15%

(negative ground) Current drain (at 13.8 V DC; approx.):

Max. power Standby Transmit Receive Max. audio 23.0 A 2.0 A

(3.0 A; UX-910) 2.5 A

(3.5 A; UX-910) Dimensions

(projections not included) 912(W) 31116(H) 91332(D) in Weight (approx.)

: 241(W) 94(H) 239(D) mm ACC 1 connector CI-V connector DATA connectors

: 4.5 kg; 10 lb

(5.35 kg; 11 lb 13 oz w/UX-910)

: 8-pin DIN connector

: 2-conductor 3.5 (d) mm (18)

: 6-pin mini DIN 2

(for MAIN and SUB) Transmitter Output power (continuously adjustable):

144 MHz 430(440) MHz 1200 MHz 5100 W 575 W 110 W (optional UX-910) Modulation system

:

SSB FM Balanced modulation Variable reactance modulation Spurious emission

:

144/430(440) MHz More than 60 dB 1200 MHz More than 50 dB

: More than 40 dB

: More than 40 dB Carrier suppression Unwanted sideband suppression Microphone connector : 8-pin connector (600 ) KEY connector

: 3-conductor 3.5(d) mm (14) 80

:

Receiver Receive system VHF SSB, CW Single conversion superheterodyne Double conversion superheterodyne UHF SSB, CW Double conversion superheterodyne Triple conversion superheterodyne

(Unit: MHz) Intermediate frequencies:

FM FM MAIN BAND SUB BAND 1st 1st 3rd 2nd 10.9500 10.9491 10.9500 0.455 3rd 2nd SSB 10.8500 CW 10.8491 FM 10.8500 0.455 SSB 71.2500 10.8500 71.3500 10.9500 CW 71.2491 10.8491 71.3491 10.9491 FM 71.2500 10.8500 0.455 71.3500 10.9500 0.455 SSB 243.8500 10.8500 243.9500 10.9500 CW 243.8491 10.8491 243.9491 10.9491 FM 243.8500 10.8500 0.455 243.9500 10.9500 0.455 z H M 4 4 1 z H M

) 0 4 4

(

0 3 4 z H M 0 0 2 1 Sensitivity

:

SSB, CW (10 dB S/N) Less than 0.11 V FM (12 dB SINAD) Less than 0.18 V Squelch sensitivity (threshold):

SSB, CW FM Selectivity SSB, CW FM FM-N Less than 1.0 V Less than 0.18 V

:

More than 2.3 kHz/6 dB Less than 4.2 kHz/60 dB*

More than 15.0 kHz/6 dB Less than 30.0 kHz/60 dB*

More than 6.0 kHz/6 dB Less than 18.0 kHz/36 dB More than 0.5 kHz/6 dB CW-N

(w/FL-132 or FL-133) Less than 1.34 kHz/60 dB*

Spurious and image rejection ratio:

*Except 1200 MHz band 144/430(440) MHz More than 60 dB More than 50 dB 1200 MHz

: More than 2.0 W at 10%

distortion with an 8 load AF output power

(at 13.8 V DC) RIT variable range 144/430(440) MHz 1200 MHz

:

1.0 kHz (SSB, CW) 5.0 kHz (FM) 2.0 kHz (SSB, CW) 10.0 kHz (FM) IF SHIFT variable range : More than 1.2 kHz PHONES connector Ext. SP connectors

: 3-conductor 6.35(d) mm (14)

: 2-conductor 3.5 (d) mm (18)

/8 2 (for MAIN and SUB) All stated specications are typical and subject to change without notice or obligation. OPTIONS 15 CR-293 HIGH STABILITY CRYSTAL UNIT FL-132 (for MAIN band) FL-133 (for SUB band and satellite operation) CW NARROW FILTERS HM-12 HAND MICROPHONE Frequency stability: 0.5 ppm

(0C to +60C) Have good shape factor and provide better CW reception during crowded band conditions. 500 Hz/6 dB Hand microphone equipped with

[UP]/[DOWN] switches. Same as that supplied with the transceiver. SP-21 EXTERNAL SPEAKER SM-20 DESKTOP MICROPHONE UT-106 DSP UNIT Designed for base station operation. Input impedance: 8 Max. input power: 5 W Unidirectional, electret microphone for base station operation. Includes [UP]

and [DOWN] switches and a low cut function. Allows AF DSP capabilities, including noise reduction and auto notch lter. UX-910 1200 MHz BAND UNIT MB-23 CARRYING HANDLE CT-17 CI-V LEVEL CONVERTER Allows you additional all mode opera-

tion on the 1200 MHz band. Carrying handle, convenient portable operation. for For remote transceiver control using a personal computer. You can change frequencies, operating mode, memory channels, etc. AG-25 (for 144 MHz band), AG-35 (for 430(440) MHz band), AG-1200 (for 1200 MHz band) WEATHER-PROOF PREAMPLIFIERS External all-weather, mast mounting preampliers for com-

pensating for coaxial cable loss. IC-MB5 MOBILE MOUNTING BRACKET Transceiver mounting bracket for mobile operation. SP-7 EXTERNAL SPEAKER Compact speaker for base station operation. UT-102 VOICE SYNTHESIZER UNIT Announces the receive frequency, mode and S-meter level in a clear, electronically-generated voice, in English (or Japanese). 81 Count on us!

A-5699H-1EX-w Printed in Japan 2000 Icom Inc. 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan