Description Operation, Call channel | Icom IC-M502 manual

		4
	DUAL WATCH/TRI-WATCH	4
■ Description	■ Operation

Dualwatch monitors channel 16 while you are receiving an- other channel; tri-watch monitors channel 16 and the call channel while receiving another channel.

DUALWATCH/TRI-WATCH SIMULATION

Call channel

DualwatchTri-watch

•If a signal is received on channel 16, dualwatch/tri-watch pauses on channel 16 until the signal disappears.

•If a signal is received on the call channel during tri-watch, tri- watch becomes dualwatch until the signal disappears.

•To transmit on the selected channel during dualwatch/tri-watch, push and hold [PTT].

qSelect the desired operating channel.

wSelect dualwatch or tri-watch in set mode. (p. 31)

ePush [CH/WX•DW•U/I/C] for 1 sec. to start dualwatch or tri-watch.

•“DUAL” appears during dualwatch; “TRI” appears during tri-watch.

•Beep tone sounds when a signal is received on channel 16.

r To cancel dualwatch/tri-watch, push [CH/WX•DW•U/I/C] again.

[Example]: Operating tri-watch on INT channel 25.

		INT	Tri-watch starts.
	25W		Tri-watch starts.
	25W
	TAG	DUP
	TRI	16Ê
	BUSY	INT	Signal is received
	25W	CALL	Signal is received
	25W	CALL	on call channel.
	TAG		on call channel.
	TRI	16Ê
	BUSY	INT	Signal received on
	25W		Signal received on
	25W		channel 16 takes
	TAG	DUP	channel 16 takes
	TRI	16Ê	priority.
		INT	Tri-watch resumes
	25W		Tri-watch resumes
	25W		after the signal
	TAG	DUP	after the signal
	TAG	DUP	disappears.
	TRI	16Ê	disappears.

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Icom IC-M502, VHF MARINE TRANSCEIVER instruction manual Description Operation, DUALWATCH/TRI-WATCH Simulation, Call channel

Contents

IM502 Channel 16 is automatically selected Case of Emergency Table of Contents Page OPERATOR’S License Operating RulesRadio license for boaters U.S.A. only Ship Station License Channel Selector Channel Transmit Power Switch HI/LOPanel Description Panel description 1DSC/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. p Channel 9 Call channel Basic OperationChannel selection Channel Push once CH/WX Microphone lock functionWeather channels Canadian channels Necessary Push HI/LO to select the output power if necessaryReceiving and transmitting Push LO/DX to turn the receive attenuator on or OFF if Call channel programming Channel names25W TAG äLEASURE Optional scrambler function on or OFF Set mode Scrambler code itemOptional voice scrambler operation Activating the scrambler Programming scrambler codes Description Operation DUALWATCH/TRI-WATCH SimulationCall channel Normal Scan Scan OperationsScan types Priority Scan Setting tag channels Starting a scan Clearing all tag channels in the selected channel groupScan starts LATÊÊÊÊ Lonêêêêê DSC OperationMmsi code programming Position and time programming LATÊ3434N LON13534E Position indicationInputÊtime UTCÊÊ Distress Completed WaitÊforÊACK Distress callDistressÊÊTX LATÊ3523N LON13535E GPSÊUTC1234 DSC/ENT Transmitting DSC callsTransmitting individual call Êindvêack ˘INDVÊACK Transmitting individual acknowledgement All ships call has been transmitted Transmitting all ships call˘AllÊships Push DSC/ENT to transmit the all ships call Transmitting position request call Transmitting position reply callPosêreq Push Distress for 5 sec. to transmit the distress call Setting the distress informationSelÊitem ÊRCVÊcalls ˘DTRSÊset ÊSet-up SelÊnature ÊUndesign ˘Explosion ÊFlooding Name DSC individual IDProgramming address ID Deleting address ID Receiving DSC calls Receiving a distress callReceiving a distress acknowledgement Receiving an individual call Receiving a distress relay acknowledgementReceiving a distress relay call Receiving an all ships call Êtom Receiving a geographical area callReceiving a position reply call Receiving a position request call OffsetÊtime 0000 1200 DSC set modeOffset time Set-up ÊAddÊID ÊDeleteÊID ˘OffsetÊtime MMSIÊcheck 123456789 Mmsi code checkSet-up ÊDeleteÊID ÊOffsetÊtime ˘MMSIÊcheck Check the 9-digit Mmsi DSC self ID code ToÊclear ThisÊdata NoÊDSC/ENT YesÊH/L Receive messagesSelÊitem ˘RCVÊcalls ÊDTRSÊset ÊSet-up SelÊMessage ˘Distress ÊOther Talk Intercom OperationIntercom operation Intercom Push 16 SET ModeSet mode programming SET Mode Construction Weather alert Set mode itemsScan mode Scan resume timer DSC watch Beep toneInternal speaker Scrambler type LCD contrastAttenuation level Scrambler code Cleaning Connections and MaintenanceSupplied accessories Fuse replacement Microphone Hanger Connections Using the supplied mounting bracket Mounting the transceiverOverhead Mounting Mounting on Dashboard Attach the clamps on either side of the IC-M502 Using the optional mounting bracket Optional unit installation Dimensions Problem Possible Cause Solution Troubleshooting Channel List † Low power only Receive only Transmitter Specifications and OptionsSpeciﬁcations General Options Push and hold to transmit release to receive Power Switch PWR pgsPTT Switch PTT pgs HM-127 REMOTE-CONTROL Microphone 0SCAN Switch SCNTAGpgs SQUELCH/MONITOR/LOCK Switch SqlmonilVOLUME/DIMMER Switch Voldim Transmit Power Switch H/L 0PRIORITY Channel Indicator HM-127 supplied accessories Installation is finished when it is completed Installation Mm 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 channel Push H/L to select the output power, if necessary RF attenuator functionPush LO/DX to turn the RF Attenuator function on and OFF Activating the lock function Lock functionsDisplay backlighting Monitor function To turn the scrambler func Tion OFF, repeat step w Activating the scramblerProgramming scramble codes Push Y/Z to select the desired channel Dualwatch/Tri- watch operation Setting tag channels Entering set mode Turn power OFF While pushing 169, turn power onBeep toneBEEP Intercom operation Channel names Intercom beep functionAvailable characters R11 Mm 3⁄32˝ TemplateCut here 149 57⁄˝ Kamiminami, Hirano-ku, Osaka 547-0003 Japan