Icom VHF MARINE TRANSCEIVER Specifications and Options, Speciﬁcations, General, Transmitter

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12 SPECIFICATIONS AND OPTIONS

■Speciﬁcations

General

• Frequency coverage	:
Transmit		156.025–157.425 MHz
Receive		156.050–163.275 MHz
• Mode	: FM (16K0G3E)
		DSC (16K0G2B)
• Channel spacing	:	25 kHz
• Current drain (at 13.8 V)	: TX high		6.0 A max.
		Max. audio	1.2 A max.
• Power supply requirement:		13.8 V DC ±15%
• Frequency stability	: ±10 ppm
		(–20°C to +60°C; –4°F to
		+140°F)
• Dimensions	: 165(W) ⋅ 110(H) ⋅ 109.4(D) mm
(Projection not included)		6 1⁄2(W) ⋅ 4 11⁄32(H) ⋅ 4 5⁄16(D) in
• Weight	:	1130 g; 2 lb 8 oz

Transmitter

• Output power	: 25 W and 1 W
• Modulation system	: Variable reactance phase
	modulation
• Max. frequency deviation	: ±5.0 kHz
• Spurious emissions	: –70 dB

Receiver

• Receive system	: Double conversion
	superheterodyne
• Sensitivity (12 dB SINAD) : Less than 0.25 µV (typical)
• Squelch sensitivity	: Less than 0.3 µV
• Intermodulation rejection ratio: More than 80 dB (typical)
• Spurious response	: More than 80 dB (typical)
rejection ratio
• Adjacent channel selectivity: More than 80 dB (typical)
• Audio output power	: More than 3.5 W at 10% distor-
	tion with a 4 Ω load

All stated specifications are subject to change without notice or obligation.

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Contents IM502 Case of Emergency Channel 16 is automatically selectedTable of Contents Page Ship Station License Operating RulesRadio license for boaters U.S.A. only OPERATOR’S LicensePanel description Transmit Power Switch HI/LOPanel Description Channel Selector Channel1DSC/POSITION Switch DSC/ENTPOS Function display Same as the HI/LO switch on the front panel. p PTT Switch PTTChannel UP/DOWN Switches Y/Z MicrophoneChannel Basic OperationChannel selection Channel 9 Call channelCanadian channels Microphone lock functionWeather channels Push once CH/WXPush LO/DX to turn the receive attenuator on or OFF if Push HI/LO to select the output power if necessaryReceiving and transmitting NecessaryChannel names Call channel programming25W TAG äLEASURE Activating the scrambler Programming scrambler codes Set mode Scrambler code itemOptional voice scrambler operation Optional scrambler function on or OFFDUALWATCH/TRI-WATCH Simulation Description OperationCall channel Priority Scan Scan OperationsScan types Normal ScanClearing all tag channels in the selected channel group Setting tag channels Starting a scanScan starts Position and time programming DSC OperationMmsi code programming LATÊÊÊÊ LonêêêêêUTCÊÊ Position indicationInputÊtime LATÊ3434N LON13534EGPSÊUTC1234 Distress callDistressÊÊTX LATÊ3523N LON13535E Distress Completed WaitÊforÊACKÊindvêack Transmitting DSC callsTransmitting individual call DSC/ENTTransmitting individual acknowledgement ˘INDVÊACKPush DSC/ENT to transmit the all ships call Transmitting all ships call˘AllÊships All ships call has been transmittedTransmitting position reply call Transmitting position request callPosêreq SelÊnature ÊUndesign ˘Explosion ÊFlooding Setting the distress informationSelÊitem ÊRCVÊcalls ˘DTRSÊset ÊSet-up Push Distress for 5 sec. to transmit the distress callDeleting address ID DSC individual IDProgramming address ID NameReceiving a distress call Receiving DSC callsReceiving a distress acknowledgement Receiving an all ships call Receiving a distress relay acknowledgementReceiving a distress relay call Receiving an individual callReceiving a position request call Receiving a geographical area callReceiving a position reply call ÊtomSet-up ÊAddÊID ÊDeleteÊID ˘OffsetÊtime DSC set modeOffset time OffsetÊtime 0000 1200Check the 9-digit Mmsi DSC self ID code Mmsi code checkSet-up ÊDeleteÊID ÊOffsetÊtime ˘MMSIÊcheck MMSIÊcheck 123456789SelÊMessage ˘Distress ÊOther Receive messagesSelÊitem ˘RCVÊcalls ÊDTRSÊset ÊSet-up ToÊclear ThisÊdata NoÊDSC/ENT YesÊH/LIntercom Intercom OperationIntercom operation TalkSET Mode Construction SET ModeSet mode programming Push 16Scan resume timer Set mode itemsScan mode Weather alertBeep tone DSC watchInternal speaker Scrambler code LCD contrastAttenuation level Scrambler typeFuse replacement Connections and MaintenanceSupplied accessories CleaningConnections Microphone HangerMounting the transceiver Using the supplied mounting bracketOverhead Mounting Mounting on Dashboard Using the optional mounting bracket Attach the clamps on either side of the IC-M502Optional unit installation Dimensions Troubleshooting Problem Possible Cause Solution† Low power only Receive only Channel ListGeneral Specifications and OptionsSpeciﬁcations TransmitterOptions HM-127 REMOTE-CONTROL Microphone Power Switch PWR pgsPTT Switch PTT pgs Push and hold to transmit release to receiveTransmit Power Switch H/L SQUELCH/MONITOR/LOCK Switch SqlmonilVOLUME/DIMMER Switch Voldim 0SCAN Switch SCNTAGpgs0PRIORITY Channel Indicator HM-127 supplied accessories Installation Installation is finished when it is completedMm 3⁄32˝ 24 to 27 d mm 15⁄16 to 11⁄16˝ Mm 29⁄32˝ Gasket Push CH/WX to select regular channel Channel A., International and Canadian channelsCall channel Condition before selecting the Push Weather channel groupRF attenuator function Push H/L to select the output power, if necessaryPush LO/DX to turn the RF Attenuator function on and OFF Monitor function Lock functionsDisplay backlighting Activating the lock functionPush Y/Z to select the desired channel Activating the scramblerProgramming scramble codes To turn the scrambler func Tion OFF, repeat step wSetting tag channels Dualwatch/Tri- watch operationTurn power OFF While pushing 169, turn power on Entering set modeBeep toneBEEP Intercom beep function Intercom operation Channel namesAvailable characters 149 57⁄˝ TemplateCut here R11 Mm 3⁄32˝Kamiminami, Hirano-ku, Osaka 547-0003 Japan