Icom IC-M502 RF attenuator function, Push H/L to select the output power, if necessary

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■Receiving and transmitting

qPush [PWR] to turn power ON.

wPush [VOL], then [Y]/[Z] to adjust audio output level.

•Push [SQL], then [Y]/[Z] to mute any audio nose, if necessary. e Push [Y]/[Z] to select the desired channel.

•When receiving a signal, “ ” appears and audio is emitted from the speaker.

•Further adjustment of audio level may be necessary at this point.

•Use the optional voice scrambler function for privacy. (pgs. 10, 53)

rPush [H/L] to select the output power, if necessary.

•“LOW” appears when low power is selected.

•Choose low power for shorter, high power for longer distance communications.

•Some channels are low power only.

HM-127 REMOTE-CONTROL MICROPHONE 13

tPush and hold [PTT] to transmit, then speak into the mi- crophone.

•“” appears.

•Channel 70 cannot be used for transmission (for GMDSS use).

Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CAN-

NOT be lawfully used by the general public in U.S.A. wa- ters.

yRelease [PTT] to receive.

IMPORTANT: To maximize the readability of your trans-

mitted signal (voice), pause a few sec. after pushing [PTT],

hold the microphone 10 to 15 cm (4 to 6 inches) from your mouth and speak at a normal voice level.

qTurn power ON

tPush to transmit

yRelease to receive

eSet channel

r Set output power

wSet volume

w Set squelch, if required

tSpeak into microphone

■RF attenuator function

➥Push [LO/DX] to turn the RF

attenuator function ON and OFF.

Appears when the RF attenuator function is in use

51

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Contents IM502 Channel 16 is automatically selected Case of EmergencyTable of Contents Page OPERATOR’S License Operating RulesRadio license for boaters U.S.A. only Ship Station LicenseChannel Selector Channel Transmit Power Switch HI/LOPanel Description Panel description1DSC/POSITION Switch DSC/ENTPOS Function display Microphone PTT Switch PTTChannel UP/DOWN Switches Y/Z Same as the HI/LO switch on the front panel. pChannel 9 Call channel Basic OperationChannel selection ChannelPush once CH/WX Microphone lock functionWeather channels Canadian channelsNecessary Push HI/LO to select the output power if necessaryReceiving and transmitting Push LO/DX to turn the receive attenuator on or OFF ifChannel names Call channel programming25W TAG äLEASURE Optional scrambler function on or OFF Set mode Scrambler code itemOptional voice scrambler operation Activating the scrambler Programming scrambler codesDUALWATCH/TRI-WATCH Simulation Description OperationCall channel Normal Scan Scan OperationsScan types Priority ScanClearing all tag channels in the selected channel group Setting tag channels Starting a scanScan starts LATÊÊÊÊ Lonêêêêê DSC OperationMmsi code programming Position and time programmingLATÊ3434N LON13534E Position indicationInputÊtime UTCÊÊDistress Completed WaitÊforÊACK Distress callDistressÊÊTX LATÊ3523N LON13535E GPSÊUTC1234DSC/ENT Transmitting DSC callsTransmitting individual call Êindvêack˘INDVÊACK Transmitting individual acknowledgementAll ships call has been transmitted Transmitting all ships call˘AllÊships Push DSC/ENT to transmit the all ships callTransmitting position reply call Transmitting position request callPosêreq Push Distress for 5 sec. to transmit the distress call Setting the distress informationSelÊitem ÊRCVÊcalls ˘DTRSÊset ÊSet-up SelÊnature ÊUndesign ˘Explosion ÊFloodingName DSC individual IDProgramming address ID Deleting address IDReceiving a distress call Receiving DSC callsReceiving a distress acknowledgement Receiving an individual call Receiving a distress relay acknowledgementReceiving a distress relay call Receiving an all ships callÊtom Receiving a geographical area callReceiving a position reply call Receiving a position request callOffsetÊtime 0000 1200 DSC set modeOffset time Set-up ÊAddÊID ÊDeleteÊID ˘OffsetÊtimeMMSIÊcheck 123456789 Mmsi code checkSet-up ÊDeleteÊID ÊOffsetÊtime ˘MMSIÊcheck Check the 9-digit Mmsi DSC self ID codeToÊclear ThisÊdata NoÊDSC/ENT YesÊH/L Receive messagesSelÊitem ˘RCVÊcalls ÊDTRSÊset ÊSet-up SelÊMessage ˘Distress ÊOtherTalk Intercom OperationIntercom operation IntercomPush 16 SET ModeSet mode programming SET Mode ConstructionWeather alert Set mode itemsScan mode Scan resume timerBeep tone DSC watchInternal speaker Scrambler type LCD contrastAttenuation level Scrambler codeCleaning Connections and MaintenanceSupplied accessories Fuse replacementMicrophone Hanger ConnectionsMounting the transceiver Using the supplied mounting bracketOverhead Mounting Mounting on Dashboard Attach the clamps on either side of the IC-M502 Using the optional mounting bracketOptional unit installation Dimensions Problem Possible Cause Solution TroubleshootingChannel List † Low power only Receive onlyTransmitter Specifications and OptionsSpeciﬁcations GeneralOptions Push and hold to transmit release to receive Power Switch PWR pgsPTT Switch PTT pgs HM-127 REMOTE-CONTROL Microphone0SCAN Switch SCNTAGpgs SQUELCH/MONITOR/LOCK Switch SqlmonilVOLUME/DIMMER Switch Voldim Transmit Power Switch H/L0PRIORITY Channel Indicator HM-127 supplied accessories Installation is finished when it is completed InstallationMm 3⁄32˝ 24 to 27 d mm 15⁄16 to 11⁄16˝ Mm 29⁄32˝ Gasket Condition before selecting the Push Weather channel group Channel A., International and Canadian channelsCall channel Push CH/WX to select regular channelRF attenuator function Push H/L to select the output power, if necessaryPush LO/DX to turn the RF Attenuator function on and OFF Activating the lock function Lock functionsDisplay backlighting Monitor functionTo turn the scrambler func Tion OFF, repeat step w Activating the scramblerProgramming scramble codes Push Y/Z to select the desired channelDualwatch/Tri- watch operation Setting tag channelsTurn power OFF While pushing 169, turn power on Entering set modeBeep toneBEEP Intercom beep function Intercom operation Channel namesAvailable characters R11 Mm 3⁄32˝ TemplateCut here 149 57⁄˝Kamiminami, Hirano-ku, Osaka 547-0003 Japan