Icom IC-M502 - Manual

1 1 OPERATING RULES PRIORITIES • Read all rules and regulations pertaining to priorities and keep an up-to-date copy handy. Safety and distress callstake priority over all others. • You must monitor channel 16 when you are not operating on another channel. • False or fraudulent distress signals are ...

PANEL DESCRIPTION 2 2 ■ Panel description WATERPROOF SCAN TAG DSC/ENT POS HI/LO POWER VOL iM502 VHF MARINE SQL LO/DX IC SCR CH/WX DW U/I/C 9 16 DISTRESS Speaker Functiondisplay q w e r t y u i o !0 !1 q POWER SWITCH [POWER]Push to toggle the transceiver power ON and OFF. w VOLUME CONTROL [VOL]Adjust...

■ Function display q BUSY/TRANSMIT INDICATOR (p. 8) ➥ “BUSY” appears when receiving a signal or when thesquelch opens. ➥ “TX” appears while transmitting. w POWER INDICATOR (p. 8) ➥ “25W” appears when high power is selected. ➥ “1W” appears when low power is selected. e TAG CHANNEL INDICATOR (p. 13)Ap...

5 2 PANEL DESCRIPTION ■ Microphone q PTT SWITCH [PTT]Push and hold to transmit; release to receive. (p. 8) w CHANNEL UP/DOWN SWITCHES [ Y Y ]/[ Z Z ] Push either switch to change the operating memory chan-nel, set mode contents, etc. (p. 8) e TRANSMIT POWER SWITCH [HI/LO] ➥ Same as the [HI/LO] switc...

6 3 BASIC OPERATION ■ Channel selection Channel 16 Channel 16 is the distress and safety channel. It is used forestablishing initial contact with another station and for emer-gency communications. Channel 16 is monitored during bothdualwatch and tri-watch. While standing by, you must monitorchannel ...

3 BASIC OPERATION 7 Weather channels There are 10 weather channels. Used for monitoring weatherchannels from the NOAA (National Oceanographic and At-mospheric Administration) broadcasts. The transceiver can detect a weather alert tone on the se-lected weather channel while receiving the channel, dur...

■ Receiving and transmitting CAUTION: Transmitting without an antenna may dam- age the transceiver. q Push [POWER] to turn power ON. w Set the audio and squelch levels. ➥ Rotate [SQL] fully counterclockwise in advance. ➥ Rotate [VOL] to adjust the audio output level. ➥ Rotate [SQL] clockwise until t...

3 BASIC OPERATION 9 ■ Call channel programming The call channel is used to select channel 9, however, youcan program your most often-used channels in each channelgroup for quick recall. q While pushing [HI/LO], push [CH/WX•DW•U/I/C] one ormore times to select the desired channel group (U.S.A., In-te...

3 BASIC OPERATION 10 ■ Optional voice scrambler operation Activating the scrambler The optional voice scrambler provides private communica-tions. In order to receive or send scrambled transmissionsyou must first activate the scrambler function. To activate thefunction, an optional UT-98 or UT-112 is...

■ Description Dualwatch monitors channel 16 while you are receiving an-other channel; tri-watch monitors channel 16 and the callchannel while receiving another channel. ■ Operation q Select the desired operating channel. w Select dualwatch or tri-watch in set mode. (p. 31) e Push [CH/WX•DW•U/I/C] fo...

12 ■ Scan types Scanning is an efficient way to locate signals quickly over awide frequency range. The transceiver has priority scan andnormal scan. When the weather alert function is in use, the selectedweather channel is checked while scanning. (p. 31) Set the tag channels (scanned channel) before...

5 SCAN OPERATION 13 INT 25W DUP TAGINTL INT 25W DUP TAGNormal scan BUSY INT 25W DUP TAGNormal scan SCAN TAG Push Scan starts. When a signal is received [Example]: Starting a normal scan. ■ Setting tag channels For more efficient scanning, add desired channels as tagchannels or clear tag channels for...

14 6 DSC OPERATION ■ MMSI code programming The 9-digit MMSI (DSC self ID) code can be programmed atpower ON. This function is not available when the MMSI code hasbeen programmed by the dealer. This code programmingcan be performed only 2 times. q Turn power OFF. w While pushing [DSC/ENT], turn power...

15 6 DSC OPERATION r Push [DSC/ENT] to set the position and advance to timesetting condition. • Push [LO/DX] to abandon the setting and exit the condition. t Rotate the channel selector to select the digit of currentUTC time. y Push [CH/WX] to advance the cursor. • Push [SCAN] to move the cursor bac...

16 6 DSC OPERATION ■ Distress call A distress call should be transmitted if, in the opinion of theMaster, the ship or a person is in distress and requires imme-diate assistance. NEVER USE THE DISTRESS CALL WHENYOUR SHIP IS NOT IN AN EMERGENCY. ADISTRESS CALL CAN BE USED ONLY WHENIMMEDIATE HELP IS NE...

17 6 DSC OPERATION ■ Transmitting DSC calls Transmitting individual call The individual call function allows you to transmit a DSC sig-nal to a specific party only. q Select a desired channel other than channel 70. w Push [DSC/ENT] to select the DSC menu. e Rotate the channel selector to select “ind...

18 6 DSC OPERATION Transmitting individual acknowledgement Transmit an acknowledgement (‘able to comply’ or ‘unable tocomply’) when an individual call for you is received. q Select a desired channel other than channel 70. w Push [DSC/ENT] to select the DSC menu. e Rotate the channel selector to sele...

19 6 DSC OPERATION Transmitting all ships call Large ships use channel 70 as their “listening channel.” Whenyou want to announce a message to these ships, use the “allships call” function. q Select a desired channel other than channel 70. w Push [DSC/ENT] to select the DSC menu. e Rotate the channel...

20 6 DSC OPERATION Transmitting position request call Transmit a position request call when you want to know yourfriend’s current position, etc. q Select a desired channel other than channel 70. w Push [DSC/ENT] to select the DSC menu. e Rotate the channel selector to select “POS request” andpush [D...

21 6 DSC OPERATION ■ Setting the distress information The nature of the distress call should be included in the dis-tress call. q Push [DSC/ENT] to select the DSC menu. w Rotate the channel selector to select “DTRS set” and push[DSC/ENT]. e Rotate the channel selector to select the nature of the dis...

22 6 DSC OPERATION ■ DSC individual ID A total of 40 DSC address ID’s can be programmed andnamed with up to 10 characters. Programming address ID q Push [DSC/ENT] to select the DSC menu. w Rotate the channel selector to select “Set-up” and push[DSC/ENT]. e Rotate the channel selector to select ‘Add ...

23 6 DSC OPERATION r Select the desired ID name with the channel selector, thenpush [DSC/ENT]. t Push [DSC/ENT] to delete the address ID; push otherswitch to exit the condition. ■ Receiving DSC calls Receiving a distress call While monitoring channel 70 and a distress call is received: ➥ Emergency a...

24 6 DSC OPERATION Receiving a distress relay acknowledgement While monitoring channel 70 and a distress relay acknowl-edgement is received: ➥ Emergency alarm sounds for 2 minutes. • Push any switch to stop the alarm. ➥ “Received DTRS RLY ACK” appears in the display; then,channel 16 is automatically...

25 6 DSC OPERATION Receiving a geographical area call While monitoring channel 70 and a geographical area call (forthe area you are in) is received: ➥ Emergency alarm or beeps sound depending on the re-ceived category. ➥ “Geographic Distress,” “Geographic Safety,” “GeographicUrgency” or “Geographic ...

26 6 DSC OPERATION ■ DSC set mode Offset time This item sets the offset time from the UTC (Universal TimeCoordinated) time. q Push [DSC/ENT] to select the DSC menu. w Rotate the channel selector to select “Set-up” and push[DSC/ENT]. e Rotate the channel selector to select ‘Offset time,’ thenpush [DS...

27 6 DSC OPERATION MMSI code check The 9-digit MMSI (DSC self ID) code can be checked in setmode. q Push [DSC/ENT] to select the DSC menu. w Rotate the channel selector to select “Set-up” and push[DSC/ENT]. e Rotate the channel selector to select ‘MMSI check,’ thenpush [DSC/ENT]. r Check the 9-digit...

28 6 DSC OPERATION ■ Receive messages The transceiver automatically stores up to 20 distress mes-sages and 20 other messages. The messages can be usedas an assistance to the logbook. q Push [DSC/ENT] to select the DSC menu. w Rotate the channel selector to select “RCV calls” and push[DSC/ENT]. • “RC...

29 7 INTERCOM OPERATION ■ Intercom operation The optional intercom function allows you to talk to the deckfrom the cabin. The optional HM-127 REMOTE-CONTROL MI- CROPHONE is required for intercom operation. Connect an optional HM-127 as described on p. 35. • Transmitting is impossible during intercom...

8 SET MODE 30 Beep tone Beep Scan mode Scan mode Weather alert WX alert Scan resume timer Scan timer Attenuation level Attenuationlevel Internal speaker Internalspeaker Scrambler code Scramblercode Scrambler type Scramblertype Dual/tri watch DUAL/TRI DSC watch DSC watch LCD contrast LCDcontrast Push...

8 SET MODE 31 ■ Set mode items Scan mode The transceiver has 2 scan modes: normal scan and priorityscan. Normal scan searches all tag channels in the selectedchannel group. Priority scan searches all tag channels in se-quence while monitoring channel 16. Scan resume timer The scan resume timer can b...

32 8 SET MODE DSC watch DSC watch monitors channel 70 while you are receiving an-other channel. If a distress signal is received on channel 70, the transceivermonitors channel 16 and 70 alternately until the distress sig-nal disappears. If a signal is received on another channel,DSC watch pauses unt...

33 8 SET MODE LCD contrast This item adjusts the contrast of the LCD in 8 steps. The optional HM-127 has it’s own setting for the beep tone. Attenuation level This item sets the receive attenuation level for the attenuatorfunction from 3 levels. Scrambler code When an optional scrambler unit is conn...

■ Supplied accessories The following accessories are supplied: Qty. q Mounting bracket ............................................................ 1 w Microphone hanger (OPC-562) ...................................... 1 e Mic hanger screws (3 × 16) ............................................ 2 r M...

35 9 CONNECTIONS AND MAINTENANCE ■ Connections q DC POWER CONNECTORConnects the supplied DC power cable from this connectorto an external 12 V DC power source. w EXTERNAL MICROPHONE JACKConnects to optional HM-127 REMOTE-CONTROL MICRO- PHONE . e ANTENNA CONNECTORConnects a marine VHF antenna with a ...

36 9 CONNECTIONS AND MAINTENANCE ■ Mounting the transceiver Using the supplied mounting bracket The universal mounting bracket supplied with your transceiverallows overhead or dashboard mounting. • Mount the transceiver securely with the 2 supplied screws (M5 × 20) to a surface which is more than 10...

37 9 CONNECTIONS AND MAINTENANCE Using the optional mounting bracket An optional MB-75 FLUSH MOUNT is available for mounting the transceiver to a flat surface such as an instrument panel. CAUTION: KEEP the transceiver and microphone at least 1 meter away from your vessel’s magnetic navigationcompass...

38 9 CONNECTIONS AND MAINTENANCE ■ Optional unit installation CAUTION: DISCONNECT the DC power cable from the transceiver before performing any work on the transceiver.Otherwise, there is danger of electric shock and/or equip-ment damage. Follow the case opening procedure shown here when youwant to ...

39 9 CONNECTIONS AND MAINTENANCE ■ Dimensions 145.0 (5 23 ⁄ 32 ˝) 165.0 (6 1 ⁄ 2 ˝) 31.4 (1 1 ⁄ 4 ˝) 53.0 (2 3 ⁄ 32 ˝) Unit: mm (inch) 110.0 (4 11 ⁄ 32 ˝) 109.4 (4 5 ⁄ 16 ˝)

10 TROUBLESHOOTING 40 PROBLEM POSSIBLE CAUSE SOLUTION REF. No power comes ON. • Bad connection to the power supply. • Check the connection to the transceiver. p. 35 No sound comes fromthe speaker. • Squelch level is too deep.• Volume level is too low.• Speaker has been exposed to water.• Internal sp...

11 CHANNEL LIST 41 Channel number USA CAN Transmit Receive 01 156.050 160.650 01A 156.050 156.050 02 156.100 160.700 03 156.150 160.750 03A 156.150 156.150 156.200 160.800 04A 156.200 156.200 156.250 160.850 05A 05A 156.250 156.250 06 06 156.300 156.300 156.350 160.950 07A 07A 156.350 156.350 08 08 ...

42 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: ...

43 12 SPECIFICATION AND OPTIONS ■ Options • MB-75 FLUSH MOUNTFor mounting the transceiver to a panel. • SP-5 EXTERNAL SPEAKERA large, external speaker for superior audio output. • SP-10 EXTERNAL SPEAKERA compact, external speaker. Features easy installation. • UT-98 VOICE SCRAMBLER UNIT (pgs. 10, 33...

44 13 HM-127 REMOTE-CONTROL MICROPHONE OPTIONAL ■ Panel description The optional HM-127 remotely controls the IC-M502 and pro-vides an optional intercom function. q POWER SWITCH [PWR] (pgs. 8, 51)Push for 2 sec. to turn the HM-127 power ON or OFFwhen the IC-M502 power is turned ON. w PTT SWITCH [PTT...

46 13 HM-127 REMOTE-CONTROL MICROPHONE ■ Function display q CHANNEL GROUP INDICATOR (pgs. 6, 50)Indicates whether an International (INT), U.S.A. (USA) orCanadian (CAN) channel is selected. w KEY LOCK INDICATOR (p. 52) ➥ Appears while the key lock function is in use. ➥ Flashes while the all key lock ...

47 13 HM-127 REMOTE-CONTROL MICROPHONE !1 DUAL/TRI WATCH INDICATOR (pgs. 11, 54)“DUAL” appears during dualwatch; “TRI” during tri-watch. !2 WEATHER CHANNEL INDICATOR (pgs. 7, 50) ➥ “WX” appears when a weather channel is selected. ➥ “ALT” appears when the weather alert function is in use;flashes when...

48 13 HM-127 REMOTE-CONTROL MICROPHONE ■ Installation The optional HM-127 can be connected to the transceiver di-rectly, as well as via the supplied connection cable for longerdistance remote operation. The connector of the connectioncable can be installed into a cabinet, wall, etc., as a built-inpl...

51 13 HM-127 REMOTE-CONTROL MICROPHONE ■ Receiving and transmitting q Push [PWR] to turn power ON. w Push [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 si...

52 13 HM-127 REMOTE-CONTROL MICROPHONE ■ Lock functions The lock function electronically locks keys and switches toprevent accidental changes and function access from the mi-crophone. • All keys, switches and controllers on the transceiver are functional. Activating the lockfunction ➥ Push [SQL] whi...

54 13 HM-127 REMOTE-CONTROL MICROPHONE ■ Starting a scan q Push [CH/WX•U/I/C] several timeswhile pushing [H/L] to select thechannel group (USA, INT, CAN), ifdesired. • When the weather alert function is in use, select the desired weather channelwith [CH/WX] and [ Y ]/[ Z ]. w Push [SCN] to start pri...

55 13 HM-127 REMOTE-CONTROL MICROPHONE ■ Set mode programming Set mode is used to change the condition of the transceiver’sfunctions and the microphone’s own functions: Transceiver’s functions— scan mode (normal or priority), scan resume timer, weatheralert, dualwatch/tri-watch selection, DSC watch,...

56 13 HM-127 REMOTE-CONTROL MICROPHONE ■ Intercom operation q Push [LO/DX•IC] for 1 sec. to ac-tivate the intercom function. • “IC” appears in the priority channel readout. • The channel name disappears. w Push [PTT] to talk. • “ ” appears in the channel name indicator. e Release [PTT] to listen. • ...

TEMPLATE 149 (5 7 ⁄ 8 ˝) 92 (3 5 ⁄ 8 ˝) 4–R11 Unit: mm (inch) 24 to 27 (d) mm ( 15 ⁄ 16 to 1 1 ⁄ 16 ˝) 2 mm; 3 ⁄ 32 ˝ MB-75 HM-127 Cut here