Icom IC-M503 instruction manual Optional voice scrambler operation, Activating the scrambler

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3 BASIC OPERATION

Optional voice scrambler operation

ïActivating the scrambler

The optional voice scrambler provides private communica- tions. In order to receive or send scrambled transmissions you must first activate the scrambler function. To activate the function, an optional UT-98 or UT-112 is necessary. See p. 16 for selecting the unit. Ask your dealer for details.

qSelect an operating channel other than Channel 16 and

70.

wWhile pushing and holding [HI/LO], push [DIMMER] to tog- gle an optional scrambler function ON or OFF.

• “SC” appears.

eTo turn the scrambler function OFF, repeat step w.

• “SC” disappears.

ïProgramming scrambler codes

There are 128 or 32 codes (0 to 127 or 1 to 32) available for programming. In order to understand one another, all trans- ceivers in your group must have the same scramble code.

This function may not be available depending on dealer set- ting.

qTurn power OFF.

wWhile pushing and holding [16], turn power ON to enter

set mode.

eAfter the display appears, release [16].

rPush [16] one or more times to select the scrambler code item.

• “Scrambler code” appears.

t Rotate the channel selector to select the desired scram- bler code.

y Turn power OFF, then ON again to exit set mode.

[Example]: Programming scrambler code 127.

16 + POWER Set mode

16

Set mode

Set mode

Enter set mode

Beep

Push one or

Scrambler

Scrambler

 

more times.

 

 

code

Select code code

 

 

 

 

Set mode

 

Scrambler code item

 

10

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Contents IM503 Channel 16 is automatically selected Mayday Mayday MaydayDS-100 #02 DSC Controller is required Table of Contents Page Privacy Operating RulesPriorities Radio LicensesPanel Description Volume Control VOLAdjusts the audio level. p Panel descriptionPanel Description Function display Microphone PTT Switch PTTChannel UP/DOWN Switches Y/Z Push and hold to transmit release to receive. pChannel Basic OperationChannel selection ÏCall channelRotate the channel selector to select a channel Basic OperationAtis and DSC channels FRG version only Receiving and transmitting Rotate the channel selector to select the desired channel Call channel programmingChannel names Push Call to input and set the nameActivating the scrambler Set mode Scrambler code itemOptional voice scrambler operation Programming scrambler codesOperation DUALWATCH/TRI-WATCHDescription DUALWATCH/TRI-WATCH SimulationPriority Scan Scan OperationsScan types Normal ScanScan Operation Setting tag channelsStarting a scan Clearing all tag channels in the selected channel groupSET Mode Construction SET ModeSet mode programming Scan resume timer Set mode itemsScan mode Dual/tri watchScrambler code Internal speakerLCD contrast Scrambler typeIntercom Operation Intercom operationCleaning Connections and MaintenanceFuse replacement UnpackingConnections and Maintenance ConnectionsMicrophone hanger Overhead Mounting Mounting on Dashboard Using the supplied mounting bracketMounting the transceiver Using the optional mounting bracket Optional unit installation Opening the transceiver case109.4 110.0 4 11⁄32˝ 165.0 6 1⁄2˝ 31.4 53.0 Dimensions145.0 5 23⁄32˝ Unit mm inchTroubleshooting Problem Possible Cause SolutionChannel List International channelsOptions Specifications and OptionsSpecifications Channel 16/CALL Channel Switch 16C Power Switch PWR pgsPTT Switch PTT pgs HM-134 REMOTE-CONTROL MicrophoneHM-134 REMOTE-CONTROL Microphone 12HM-134 REMOTE-CONTROL Microphone Channel Group Indicator pgsKEY Lock Indicator p 1EXTERNAL Speaker Jack7WAIT Indicator A. channels Call channelS.A. and International channels International channelsPush H/L to select the output power, if necessary Monitor function Lock functionsDisplay backlighting Activating the lock functionTo turn the scrambler func Tion OFF, repeat step w Programming scramble codesPush Y/Z to select the desired channel Push Dual to start dualwatch or tri-watch To cancel dualwatch/tri-watch, push Dial againDualwatch/Tri- watch operation Microphone’s own functions Entering set modeTransceiver’s functions Beep tone BeepIntercom beep function Available charactersInstallation HM-134 Connections and InstallationHM-134 supplied accessories Accessories included with the HM-134 Qty13HM-134 Connections and Installation 24 to 27 d mm 15⁄16 to 11⁄16˝ HM-134 Connections and InstallationMm 3⁄ 32˝ x 149 57⁄8˝ MB-75 TemplateCut here R11 Mm 3⁄32˝Installation Notes Installation notes0560 AUT NED POR DEN GBR BEL ITA FIN IRL LUX GRE SUI Intended Country of UseGER FRA ESP Kamiminami, Hirano-ku, Osaka 547-0003 JapanFrequency MHz Transmit Receive 01A