VX-450 SERIES OPERATING MANUAL VERTEX STANDARD CO., LTD. 4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan VERTEX STANDARD US Headquarters 10900 Walker Street, Cypress, CA 90630, U.S.A. YAESU UK LTD. Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U.K. VERTEX STANDARD HK LTD. Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong VERTEX STANDARD (AUSTRALIA) PTY., LTD. Normanby Business Park, Unit 14/45 Normanby Road Notting Hill 3168, Victoria, Australia 16-Key Version 4-Key Version Non-LCD Version CONTENTS Warning! FCC RF Exposure Requirements ............... 2 Controls & Connectors (16-Key Version) ................... 4 Controls & Connectors (4-Key Version) ..................... 5 Controls & Connectors (Non-LCD Version) ............... 6 LCD Icons & Indicators (16- & 4-Key Versions) ....... 7 Before You Begin ........................................................... 8 Battery Pack Installation and Removal ............................... 8 Low Battery Indication ....................................................... 8 Battery Charging ................................................................. 9 Operation ..................................................................... 10 Preliminary Steps ..................................................... 10 Operation Quick Start .............................................. 10 Advanced Operation ................................................... 14 Programmable Key Functions ...................................... 14 Descriptipon of Operating Functions ............................ 16 ARTS (Auto Range Transpond System) ................... 24 DTMF Paging System ................................................. 25 LOCK ............................................................................ 25 CONGRATULATIONS!
You now have at your fingertips a valuable communications tool-a Vertex Standard two-way radio! Rug-
ged, reliable and easy to use, your Vertex Standard radio will keep you in constant touch with your colleagues for years to come, with negligible maintenance down-time. Please take a few minutes to read this manual carefully. The information presented here will allow you to derive maximum performance from your radio, in case questions arise later on. Were glad you joined the Vertex Standard team. Call on us anytime, because communications is our business. Let us help you get your message across. Notice!: There are no owner-serviceable parts inside the radio. All service jobs must be referred to an authorized Vertex Standard Service Representative. Consult your Authorized Vertex Standard Dealer for installation of optional accessories. IMPORTANT NOTICE FOR NORTH AMERICAN USERS REGARDING 406 MHZ GUARD BAND The U.S. Coast Guard and National Oceanographic and Atmospheric Administration have requested the cooperation of the U.S. Federal Communications Commission in preserving the integrity of the protected frequency range 406.0 to 406.1 MHz, which is reserved for use by distress beacons. Do not attempt to program this apparatus, under any circumstances, for operation in the frequency range 406.0 - 406.1 MHz if the apparatus is to be used in or near North America. Warning - Frequency band 406 - 406.1 MHz is reserved for use ONLY as a distress beacon by the US Coast Guard and NOAA. Under no circumstance should this frequency band be part of the preprogrammed operating frequencies of this radio. VX-450 SERIES OPERATING MANUAL 1 WARNING! FCC RF EXPOSURE REQUIREMENTS This Radio has been tested and complies with the Federal Communications Commission (FCC) RF exposure limits for Occupational Use/Controlled exposure environment. In addition, it complies with the following Stan-
dards and Guidelines:
FCC 96-326, Guidelines for Evaluating the Environmental Effects of Radio-Frequency Radiation. FCC OET Bulletin 65 Edition 97-01 (2001) Supplement C, Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields. ANSI/IEEE C95.1-1992, IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Fre-
quency Electromagnetic Fields, 3 kHz to 300 GHz. ANSI/IEEE C95.3-1992, IEEE Recommended Practice for the Measurement of Potentially Hazardous Elec-
tromagnetic Fields - RF and Microwave. WARNING:
This radio generates RF electromagnetic energy during transmit mode. This radio is designed for and classified as Occupational Use Only, meaning it must be used only during the course of employment by individuals aware of the hazards, and the ways to minimize such hazards. This radio is not intended for use by the General Population in an uncontrolled environment. CAUTION:
To ensure that your expose to RF electromagnetic energy is within the FCC allowable limits for occupa-
tional use, always adhere to the following guidelines:
This radio is NOT approved for use by the general population in an uncontrolled exposure environ-
ment. This radio is restricted to occupational use, work related operations only where the radio opera-
tor must have the knowledge to control his or her RF exposure conditions. When transmitting, hold the radio in a vertical position with its microphone 2 inches (5 cm) away from your mouth and keep the antenna at least 2 inches (5 cm) away from your head and body. 2 VX-450 SERIES OPERATING MANUAL WARNING! RF EXPOSURE REQUIREMENTS
The radio must be used with a maximum operating duty cycle not exceeding 50%, in typical Push-to-
Talk configurations. DO NOT transmit for more than 50% of total radio use time (50% duty cycle). Transmitting more than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded. The radio is transmitting when the red LED on the top of the radio is illuminated. You can cause the radio to transmit by pressing the P-T-T button.
SAR compliance for body-worn use was only demonstrated for the specific belt-clip Part Number
(CLIP-450). Other body-worn accessories or configurations may NOT comply with the FCC RF expo-
sure requirements and should be avoided.
DO NOT transmit when the radio is used in Body Worn configuration with the following accessory:
belt-clip. It must be used ONLY for (1) there is 4 cm distance from the body during transmitting, (2) monitoring purposes, using the speaker only and (3) for carrying purposes.
Always use Vertex Standard authorized accessories.
The information listed above provides the user with the information needed to make him or her aware of RF exposure, and what to do to assure that this radio operates with the FCC RF exposure limits of this radio.
Electromagnetic Interference/Compatibility During transmissions, this radio generates RF energy that can possibly cause interference with other devices or systems. To avoid such interference, turn off the radio in areas where signs are posted to do so. Do not operate the transmitter in areas that are sensitive to electromagnetic radiation such as hospi-
tals, health care facilities, aircraft, and blasting sites. VX-450 SERIES OPERATING MANUAL 3 CONTROLS & CONNECTORS (16-KEY VERSION) VOL/PWR Knob CH (Channel) Selector Antenna Jack TOP SEL Key LCD (Liquid Crystal Display) Microphone PTT Switch SIDE-1 Button SIDE-2 Button LED Indicator Steady Red:
Transmitting in progress Blinking Green:
Busy Channel Steady Green:
Tone Squelch in defeated condition Dealer Programmed Color:
Emergency, 5-Tone Decoded, or 2-Tone Decoded
: one of Flashing in white, Continuation changes in sequential colors, or tog-
gling the two colors. MIC/SP Jack
(External MIC/SP) 16-Button DTMF Keypad Battery Pack Latch Speaker 4 VX-450 SERIES OPERATING MANUAL CONTROLS & CONNECTORS (4-KEY VERSION) VOL/PWR Knob CH (Channel) Selector Antenna Jack TOP SEL Key LCD (Liquid Crystal Display) Microphone PTT Switch SIDE-1 Button SIDE-2 Button LED Indicator Steady Red:
Transmitting in progress Blinking Green:
Busy Channel Steady Green:
Tone Squelch in defeated condition Dealer Programmed Color:
Emergency, 5-Tone Decoded, or 2-Tone Decoded
: one of Flashing in white, Continuation changes in sequential colors, or tog-
gling the two colors. MIC/SP Jack
(External MIC/SP) 4-Button Programmable Key Battery Pack Latch Speaker VX-450 SERIES OPERATING MANUAL 5 CONTROLS & CONNECTORS (NON-LCD VERSION) VOL/PWR Knob CH (Channel) Selector Antenna Jack TOP SEL Key Speaker Microphone PTT Switch SIDE-1 Button SIDE-2 Button LED Indicator Steady Red:
Transmitting in progress Blinking Green:
Busy Channel Steady Green:
Tone Squelch in defeated condition Dealer Programmed Color:
Emergency, 5-Tone Decoded, or 2-Tone Decoded
: one of Flashing in white, Continuation changes in sequential colors, or tog-
gling the two colors. MIC/SP Jack
(External MIC/SP) 6 Battery Pack Latch VX-450 SERIES OPERATING MANUAL LCD ICONS & INDICATORS (16-KEY & 4-KEY VERSIONS)
: Scan is activated
: Priority Scan is activated DUAL WATCH is activated Audio Compander is activated Low Transmit Power Mode On Option SW (Key Function) is activated RSSI Indicator (four steps) Encryption is activated CALL Indicator Receiver Monitor Talk-Around is enabled Voice Message is received Battery Indicator Priority Channel Zone Number Zone Scan is enabled 12 Character Alpha-numeric Display VX-450 SERIES OPERATING MANUAL 7 BEFORE YOU BEGIN Battery Pack Installation and Removal
To install the battery pack, align the battery pack to the radio with an offset about 1/2 inch from the top edge of battery compartment, then slide the battery pack upward until it locks in place with a Click. Low Battery Indication As the battery discharges during use, the voltage gradually becomes lower. When the battery voltage becomes to low, substitute a freshly charged battery and recharge the depleted pack. The LED indicator on the top of the radio will blink red when the bat-
tery voltage is low. Caution Danger of explosion if battery is replaced with an incorrect battery. Replace only with the same or equivalent type.
To remove the battery, turn the radio off and re-
move any protective cases. Slide the Battery Pack Latch on the bottom of the radio toward the front panel while sliding the battery down about 1/2 inch. Then lift the battery out from the radio while unfolding the Belt Clip. Do not attempt to open any of the recharge-
able Lithium-Ion packs, as they could ex-
plode if accidentally short-circuited. 8 VX-450 SERIES OPERATING MANUAL BEFORE YOU BEGIN Battery Charging
Insert the DC plug from the PA-45 AC Adapter into the DC jack on the rear panel of the CD-49 Desktop Rapid Charger, then plug the PA-45 AC Adapter into the AC line outlet.
Insert the battery pack into the CD-49 Desktop Rapid Charger while aligning the slots of the bat-
tery pack with the guides in the nest of the CD-
49; refer to the illustration at the right for details on proper positioning of the pack. If charging with the transceiver attached, turn the transceiver off, and the antenna jack should be at the left side when viewing the charger from the front.
If the battery pack is inserted correctly, the LED indicator will glow red. A fully-discharged pack will be charged completely in approximately 1.5 hours (FNB-V112LI, 2.5 hours: FNB-V113LI).
The LED indicator will blink red/green alternately when charging is nearing completion.
When charging is completed, the LED indicator will change to green. Even if the charging is com-
pleted, the LED indicator will sometimes change to red for trickle charging.
Disconnect the pack from the CD-49 Desktop Rapid Charger, and unplug the PA-45 AC Adapter from the AC line outlet. VX-450 SERIES OPERATING MANUAL 9 Preliminary Steps
Install a charged battery pack onto the transceiver, as described previously.
Screw the supplied antenna onto the Antenna jack. Never attempt to operate this transceiver without an antenna connected.
If you have a Speaker/Mi-
crophone, we recommend that it not be connected until you are familiar with the basic operation of the VX-450. 10 OPERATION Operation Quick Start
Turn the top panels VOL/PWR knob clock-
wise to turn the radio on.
Turn the top panels CH Selector knob to choose the desired operating channel. On the 16-key and 4-key versions, a channel name will appear on the LCD.
If you want to select the operating channel from a different Memory Channel Zone, press the Pro-
grammable key (assigned to the Memory Zone Up or Down function) to select the Memory Chan-
nel Zone you want before selecting the operating channel. A Zone name will appear on the LCD whenever the Programmable key is pressed. Note: Some models are programmed so that the operating channels are selected by the Program-
mable key and the Memory Channel Zone is se-
lected by the CH selector knob. For further de-
tails, contact your Vertex Standard dealer. VX-450 SERIES OPERATING MANUAL OPERATION
Rotate the VOL/PWR knob to set the volume level. If no signal is present, press and hold in the SIDE-1 button (un-
der the P T T switch) more than 2 seconds;
background noise will now be heard, and you may use this to set the VOL/PWR knob for the desired audio level. Press and hold the SIDE-1 button more than 2 seconds
(or press the SIDE-1 button twice) to quiet the noise and resume normal (quiet) monitoring.
To transmit, monitor the channel and make sure it is clear. Press and hold the PTT switch. Speak into the microphone area of the front panel grille (above the upper left edge of the LCD) in a normal voice level. To return to the Receive mode, release the PTT switch. VX-450 SERIES OPERATING MANUAL
Press the (Orange) TOP SEL key to activate one of the preprogrammed functions which may have been enabled at the time of programming by the dealer. See the next section for details regard-
ing the available features.
If a Speaker/Microphone is available, remove the plastic cap and its two mounting screws from the right side of the trans-
ceiver, then align the con-
nector of the Speaker/
Microphone on the trans-
ceiver body; secure the connector pin using the screws supplied with the Speaker/Microphone. Hold the speaker grille up next to your ear while receiving. To transmit, press the PTT switch on the Speaker/Microphone, just as you would on the main transceivers body, and speak into the microphone on a normal voice level. Note 1): Save the original plastic cap and its mounting screws. They should be reinstalled when not using the Speaker/Microphone. 11 OPERATION Automatic Time-Out Timer If the selected channel has been programmed for au-
tomatic time-out, you must limit the length of each transmission. While transmitting, a beep will sound 10 seconds before time-out. Another beep will sound just before the deadline; the TX indicator will dis-
appear and transmission will cease soon thereafter. To resume transmitting, you must release the PTT switch and wait for the penalty timer to expire. 2) When you press the PTT switch on the Speaker/Microphone, it disables the internal mi-
crophone, and vice versa. Do not remove/install the Speaker/Micro-
phone in a hazardous location.
If the Busy Channel Lockout feature has been programmed on a channel, the radio will not trans-
mit when a carrier is present. Instead, the radio will generate short beep three times and indicate
* CH Busy * on the display (16-key and 4-
key versions). Release the PTT switch and wait for the channel to be clear of activity.
If CTCSS or Digital Coded Squelch (DCS) Lock-
out has been programmed on a channel, the radio can transmit only when there is no carrier being received or when the carrier being received in-
cludes the correct CTCSS tone or DCS code. 12 VX-450 SERIES OPERATING MANUAL NOTE VX-450 SERIES OPERATING MANUAL 13 ADVANCED OPERATION Programmable Key Functions All versions of the VX-450 include the TOP SEL, SIDE-1, and SIDE-2 key. The 16-key and 4-key ver-
sions include the [A], [B], [C], and [D] function keys. Furthermore, the 16-key version includes the [] and
[#] function keys. Some features may require the purchase and instal-
lation of optional internal accessories. The possible Programmable key programming features are illus-
trated at the right, and their functions are explained on page 16. For further details, contact your Vertex Standard dealer. The Programmable key functions can be customized, via programming by your Vertex Standard dealer, to meet your communications/network requirements. For future reference, check the box next to each func-
tion that has been assigned to the Programmable key on your particular radio, and keep it handy. FUNCTION None Monitor Lamp Lock1 Scan Dual Watch Low Power Talk Around TX Save Disable Encryption FM Scan Zone Up1 Zone Down1 Channel Up1 Channel Down1 Set1 Call/Reset 14 TOP SEL SIDE-1 SIDE-2
[A]
[B]
[C]
[D]
PROGRAMMABLE KEY VX-450 SERIES OPERATING MANUAL FUNCTION ADVANCED OPERATION PROGRAMMABLE KEY TOP SEL SIDE-1 SIDE-2
[A]
[B]
[C]
[D]
Call 1 Call 2 Call 3 Call 4 Call 5 Code Up1 Code Down1 Code Set1 Speed Dial2 Option SW 1 Option SW 2 Emergency PRI-11 Selectable Tone1 Direct Channel #11 Direct Channel #21 Direct Channel #31 Direct Channel #41 REC3 PLAY3 SQL AF Min Volume Status Set1 Status Up1 Status Down1 Status Check Lone Worker DTMF Code Set2 TA Scan Priority Disable Beep Off Whisper Duty
1: This function can not be selected on the Non-LCD Version
2: This function is only selected on the 16-key Version
3: Requires DVS-8 Voice Storage Unit VX-450 SERIES OPERATING MANUAL 15 ADVANCED OPERATION Description of Operating Functions MONITOR Press the assigned Programmable key to cancel CTCSS- and DCS-controlled squelch; the BUSY/TX indicator will glow green. Press and hold this button for 2 seconds to hear background noise (unmute the audio); the BUSY/TX indicator will blink green. LAMP Press the assigned Programmable key to illuminate the LCD for five seconds. LOCK Press the assigned Programmable key to lock the CH Selector knob, Programmable keys, and PTT switch. The precise lockout configulation is programmed by your Dealer. SCAN The Scanning feature is used to monitor multiple sig-
nals programmed into the transceiver. While scan-
ning, the transceiver will check each channel for the presence of a signal, and will stop on a channel if a signal is present. To activate scanning:
Press the assigned Programmable key to activate scanning.
The scanner will search the channels of each chan-
nel, looking for active ones; it will pause each time it finds a channel on which someone is speaking.
Press the assigned Programmable key again to dis-
able scanning. Operation will revert to the pro-
grammed revert channel. Note: Your dealer may have programmed your ra-
dio to stay on one of the following channels if you press the PTT switch during scanning pause:
Current channel (Talk Back)
Last Busy channel
Priority channel
Home channel
Scan Start channel 16 VX-450 SERIES OPERATING MANUAL ADVANCED OPERATION DUAL WATCH The Dual Watch feature is similar to the SCAN fea-
ture, except that only two channels are monitored:
The current operating channel; and
The Priority channel. To activate Dual Watch:
Press the assigned Programmable key.
The scanner will search the two channels; it will pause each time it finds a channel on which some-
one is speaking. To stop Dual Watch:
Press the assigned Programmable key.
Operation will revert to the Dual Watch Start channel. LOW POWER Press the assigned Programmable key to set the radios transmitter to the Low Power mode, thus extending battery life. Press the key again to return to Normal transmit power when in difficult terrain. When the radios transmitter is set to Low Power mode, the icon will be indicated on the dis-
play. TALK AROUND (TA) Press the assigned Programmable key to activate the Talk Around feature when you are operating on du-
plex channel systems (separate receive and transmit frequencies, utilizing a repeater station). The Talk Around feature allows you to bypass the repeater sta-
tion and talk directly to a station that is nearby. This feature has no effect when you are operating on sim-
plex channels, where the receive and transmit fre-
quencies are already the same. When the TA function is activated, the will be indicated on the display. icon Note that your dealer may have mode provision for Talk Around channels by programming repeater and Talk Around frequencies on two adjacent chan-
nels. If so, the key may be used for one of the other Pre-Programmed Functions. VX-450 SERIES OPERATING MANUAL 17 ADVANCED OPERATION TX SAVE DISABLE Press the assigned Programmable key to disable the Transmit Battery Saver, if you are operating in a lo-
cation where high power is almost always needed. The Transmit Battery Saver helps extend battery life by reducing transmit power when a very strong sig-
nal from an apparently nearby station is being re-
ceived. Under some circumstances, though, your hand-held radio may not be heard well at the other end of the communication path, and high power may be necessary at all times. ENCRYPTION Press the assigned Programmable key to toggle the Encryption feature On and Off. FM SCAN The FM Scan feature checks a User-assigned Prior-
ity Channel regularly as you scan other channels. Thus, if only Channels 1, 3, and 5 (of the 8 available channels) are designated for Scanning, the user may nonetheless assign Channel 2 as the User-assigned Priority Channel via the Follow-Me feature. To activate FM Scan, first select the channel you want to designate as the User-Assigned Priority Chan-
nel and press the assigned programmable key. Then rotate the CH Selector knob to recall to the Scan-
ning Start channel which has been programmed by your dealer to activate the scanner. When the scan-
ner stops on an Active channel, the User-assigned Priority Channel will automatically be checked ev-
ery few seconds; if activity is found on the User-as-
signed Priority Channel, the radio will switch between it and the Dealer-Assigned Priority Channel, if any. 18 VX-450 SERIES OPERATING MANUAL ADVANCED OPERATION ZONE UP/DOWN Press the assigned Programmable key to select a dif-
ferent Zone of channels. Once the desired Zone is reached, rotate the CH Selector knob to select the desired channel within the selected Zone. You may wish to have the Scanner pass through more than one Zone during the scanning process (normally, scanning is performed within the current Zone only). To include the current Zone in the scanning loop, press and hold in the assigned Programmable key for one second. To remove a Zone from Zone Scan, press and hold in the assigned programmable key again for one second. Multi-Zone Scanning is only possible if you are us-
ing the User Scan list. To edit the User Scan list, press and hold the assigned Programmable key for one second to delete the current Memory Zone from the Scanning. Alternatively, press and hold the as-
signed Programmable key for one second to delete the Current Memory channel from the Scanning. When you delete a Zone or channel, -SCAN Skip- will appear on the LCD for one second after pressing the assigned Programmable key. To restore a particular channel to your scanning list, press and hold in the assigned Programmable key again for one second;
VX-450 SERIES OPERATING MANUAL
-SCAN Stop- will appear on the LCD for one sec-
ond after pressing the assigned programmable key. CHANNEL UP/DOWN Press the assigned Programmable key to select a dif-
ferent channel within the current Zone. SET Press the assigned Programmable key to activate the User Set (Menu) Mode. See page 20 for details CALL/RESET While the DTMF Paging System This feature, if enabled, allows the user to change the 3-digit Page Call code, used to call other simi-
larly-equipped stations. Press the assigned Program-
mable key, followed by the three digits representing the Page Call code of the station you wish to call. Three tones will be heard after the last key is pressed
(the new code will now be transmitted). The receiver squelch of the other station will be opened, and you can begin communication. While the 2-Tone/5-Tone Paging System This feature, if enabled, press the assigned Program-
mable key to send a 2-tone/5-tone sequential tone. 19 ADVANCED OPERATION CALL 1 TO CALL 5 Press the assigned Programmable key to send a 2-
tone/5-tone sequential tone group which is pre-de-
fined. CODE UP/DOWN Press the assigned Programmable key to select a 2-
tone/5-tone encode code from the pre-defined encode list. CODE SET Press the assigned Programmable key to change the encode digits for 5-tone operation. To change a spe-
cific digit, select the desired digit using the [A] key, then change the number using the [B]/[C] keys, and store the number using the [D] key. SPEED DIAL (16-KEY VERSION ONLY) Your Dealer may have pre-programmed Auto-Dial telephone number memories into your radio. To dial a number, press the assigned Programmable key, then press the front panels numeric key corre-
sponding to the Auto-Dial memory number list pro-
vided by your Dealer or Network Administrator. The DTMF tones sent during the dialing sequence will be heard in the speaker. OPTION SW1 Press the assigned Programmable key to toggle the optional accessory 1 On and Off. OPTION SW2 Press the assigned Programmable key to toggle the optional accessory 2 On and Off. EMERGENCY The VX-450 series include an Emergency feature which may be useful for alerting another party moni-
toring on the same frequency as your transceivers channel. Press the assigned Programmable key to initiate an emergency call. For further details contact your Dealer. PRI-1 Press the assigned Programmable key to recall the pre-defined Priority channel. When you recall the Priority channel, the P notation will appear on the LCD. 20 VX-450 SERIES OPERATING MANUAL ADVANCED OPERATION SELECTABLE TONE Press the assigned Programmable key to select a sub-
audible tone (CTCSS/DCS) from the pre-defined tone table. You can operate using the indicated sub-au-
dible tone in the Selectable Tone mode. DIRECT CH#1 TO #4 Press the assigned Programmable key to recall the Dealer pre-programmed channel directly. REC/PLAY (VOICE STORAGE: OPTION) This function allows your radio to record a received voice message, and to play back the recorded audio. It requires installation of the optional Voice Record-
ing Unit. Recording;
Press the assigned Programmable key for 1.5 sec-
onds to enable the Voice Recording Mode. If the in-
coming signal is received, so as to un-mute the squelch and pass audio, then the Icon will flash and received audio will be recorded. When the voice recording is completed, the stays on. Playback;
Press the assigned Programmable key momentarily to play back the last message. VX-450 SERIES OPERATING MANUAL To stop the play-back, press the TOP SEL key. While playback is proceeding, you may press the [A]
key (4-key version) or [] key (16-key version) to jump to the previous message, or press the [B] key
(4-key version) or [#] key (16-key version) to jump to the next message. Furthermore, press the [D] key to clear the all messages and stop the play-back. SQL You can manually adjust the squelch level using this function:
Press the assigned Programmable key. A tone will sound, and the current squelch level will appear on the display.
Press the SIDE-1/SIDE-2 button to select the de-
sired squelch level.
Two seconds after releasing the SIDE-1/SIDE-2 button, the display will revert to the normal chan-
nel indication. AF MIN VR Press the assigned Programmable key to reduce the audio output to the (lower) level programmed by your Dealer. 21 ADVANCED OPERATION STATUS SET Press the assigned Programmable key to change the 5-Tone status code. To change the status code, select the desired digit by [A] key, then change the number by [B]/[C] key, and store the number by [D] key. STATUS UP/DOWN Press the assigned Programmable key to select a 5-
Tone status code from the pre-defined status list. STATUS CHECK Press the assigned Programmable key to check the 5-Tone receive status code. When you press this key, the LCD display will indicate the Message corre-
sponding to the receive status condition per the pre-
defined status list. LONE WORKER Press the assigned Programmable key to toggle the Lone Worker feature On and Off. The Lone Worker feature is designed to emit an alarm for 30 seconds when the Lone Worker Timer (pro-
grammed by your Dealer) has expired. If the user does not reset the timer by pressing the PTT switch, the radio switches to the Emergency mode. DTMF CODE SET (16-KEY VERSION ONLY) You may send the desired telephone number manu-
ally. To dial a number manually, press the assigned Pro-
grammable key, then press the desired numbers on the front panels numeric key. Now, press the PTT switch to send the telephone number. The DTMF tones sent during the dialing sequence will be heard in the speaker. TA SCAN Press the assigned Programmable key to toggle the TA (Talk Around) scan feature On and Off. While TA scan is proceeding, the VX-450 will search both the transmit and receive frequencies (the icon will blink). When a signal is encountered on the receive frequency, the VX-450 will pause until the signal disappears (
icon will appear but not blink). When a signal is encountered on the transmit frequency, the VX-450 will check for activity on the receive frequency every few seconds (interval pro-
grammed by your Dealer). 22 VX-450 SERIES OPERATING MANUAL ADVANCED OPERATION PRIORITY DISABLE Press the assigned Programmable key to disable the Priority feature temporarily. Again press the assigned Programmable key to resume the Priority feature. DUTY Press the assigned Programmable key to toggle the Duty function of the 2-tone/5-tone decoder On and Off. BEEP OFF Press the assigned Programmable key to disable the radio beeps temporarily. Again press the assigned Pro-
grammable key to enable the radio beeps. WHISPER Press the assigned Programmable key to increase the microphone gain; thus you can speak in a low voice
(whisper) temporarily. Again press the assigned Pro-
grammable key to resume normal microphone gain. When the Duty function is set toOn, the user will always hear (depending on the sub-audio signalling) all traffic on the paging channel. The radio will sound the paging alert when it receives the programmed 2-
tone/5-tone code. When the Duty function is set toOff, the user will NOT hear normal radio traffic on the paging chan-
nel. The radio will sound the paging alert and unmute only when it receives the programmed 2-tone/5-tone code. VX-450 SERIES OPERATING MANUAL 23 ARTSTM (AUTO RANGE TRANSPOND SYSTEM) DTMF PAGING SYSTEM This system is designed to inform you when you and another ARTSTM-equipped station are within com-
munication range. During ARTSTM operation, when the radio receives the correct ARTSTM signal, a short beep will sound and the In (meaning In Service) notation will be displayed on the sub-LCD. If you move out of range for more than two minutes, your radio senses that no signal has been received; three short beeps will sound, and Out (Out of Service) will be displayed on the sub-LCD. If you subsequently move back into range, as soon as the other station transmits, a short beep will sound and In will be displayed again on the sub-LCD.
: Except on Non-LCD version. This system allows paging and selective calling, us-
ing DTMF tone sequences. When your radio is paged by a station bearing a tone sequence which matches yours, your radios squelch will open and the alert will sound. The three-digit code of the station which paged you will be displayed on your radios LCD. LOCK In order to prevent accidental channel change or in-
advertent transmission, various aspects of the CH Selector knob, Programmable keys, and PTT switch may be locked. The precise lockout configulation is programmed by your Dealer. To locked out the key locking, turn the radio off. Now, press and hold the PTT and SIDE-2 key while turn-
ing the radio on again. To cancel locking, repeat this process. 24 VX-450 SERIES OPERATING MANUAL Part 15.21: Changes or modifications to this device not expressly ap-
proved by Vertex Standard could void the users authorization to operate this device. Copyright 2010 VERTEX STANDARD CO., LTD. All rights reserved. No portion of this manual may be reproduced without the permission of VERTEX STANDARD CO., LTD. Printed in Japan