Icom IC-M502 Instruction Manual
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Icom IC-M502 Instruction Manual

Icom IC-M502 Instruction Manual

Vhf marine transceiver
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INSTRUCTION MANUAL

VHF MARINE TRANSCEIVER
iM502
This device complies with Part 15 of the FCC rules. Operation is sub-
ject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.

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  • Page 1: Instruction Manual

    INSTRUCTION MANUAL VHF MARINE TRANSCEIVER iM502 This device complies with Part 15 of the FCC rules. Operation is sub- ject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 2: Important

    This in- before using the transceiver. struction manual contains important operating instructions for the IC-M502. IN CASE OF EMERGENCY If your vessel requires assistance, contact other vessels and Or, transmit your distress call using digital selective calling on the Coast Guard by sending a distress call on channel 16.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS I Position and time programming ..14 IMPORTANT ..........i 12 SPECIFICATIONS AND I Position indication ......15 IN CASE OF EMERGENCY ...... i OPTIONS ......42 – 43 I Distress call ........16 TABLE OF CONTENTS ......ii I Specifications .......

  • Page 4: Cautions

    Changes or modifications to this device, not ex- hot when operating continuously for long periods. pressly approved by Icom Inc., could void your authority to operate this device under FCC regulations. Place the transceiver in a secure place to avoid inadvertent NEVER use by children.

  • Page 5: Operating Rules

    OPERATING RULES (2) OPERATOR’S LICENSE PRIORITIES A Restricted Radiotelephone Operator Permit is the license • Read all rules and regulations pertaining to priorities and most often held by small vessel radio operators when a radio keep an up-to-date copy handy. Safety and distress calls is not required for safety purposes.

  • Page 6: Panel Description

    PANEL DESCRIPTION I Panel description q POWER SWITCH [POWER] r TRANSMIT POWER SWITCH [HI/LO] ➥ Toggles high and low power when pushed. (p. 8) Push to toggle the transceiver power ON and OFF. • Some channels are set to low power only. w VOLUME CONTROL [VOL] ➥...
  • Page 7 PANEL DESCRIPTION ➥ While pushing [HI/LO], rotate [CHANNEL] to adjust the i DISTRESS SWITCH [DISTRESS] brightness of the LCD and switch backlight. Transmits distress call when pushed for 5 sec. (p. 16) y ATTENUATOR/INTERCOM/SCRAMBLER SWITCH o CHANNEL/DUALWATCH/TRI-WATCH SWITCH [LO/DX•IC•SCR] [CH/WX•DW•U/I/C] ➥...

  • Page 8: I Function Display

    PANEL DESCRIPTION I Function display ➥ “Low battery” flashes when the battery voltage drops to approx. 10 V DC or below. ➥ “DUAL” appears during dualwatch; “TRI” appears dur- ing tri-watch. (p. 11) t SCRAMBLER INDICATOR (p. 10) Appears when an optional voice scrambler is activated. y DUPLEX INDICATOR (p.

  • Page 9: I Microphone

    PANEL DESCRIPTION I 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] ➥...

  • Page 10: Basic Operation

    BASIC OPERATION I Channel selection ➥ Push [16•9] for 1 sec. to select the call channel of the se- lected channel group. • “CALL” and call channel number appear. Channel 16 • Each channel group may have an independent call channel after Channel 16 is the distress and safety channel.

  • Page 11: I Microphone Lock Function

    BASIC OPERATION • “DUP” appears for duplex channels. “Weather alert” on p. 31. • “A” appears for simplex channels. q Push [CH/WX] once or twice to select a weather channel. • “WEATHER” appears when a weather channel is selected. “WX ALT”...

  • Page 12: I Receiving And Transmitting

    BASIC OPERATION I Receiving and transmitting u Push and hold [PTT] to transmit, then speak into the mi- crophone. CAUTION: • “TX” appears. Transmitting without an antenna may dam- • Channel 70 cannot be used for transmission (for GMDSS use). age the transceiver.

  • Page 13: I Call Channel Programming

    BASIC OPERATION I Call channel programming I Channel names The call channel is used to select channel 9, however, you Memory channels can be tagged with alphanumeric names can program your most often-used channels in each channel of up to 10 characters each. group for quick recall.

  • Page 14: I Optional Voice Scrambler Operation

    BASIC OPERATION I Optional voice scrambler operation Activating the scrambler Programming scrambler codes The optional voice scrambler provides private communica- There are 128 or 32 codes (0 to 127 or 1 to 32) available for tions. In order to receive or send scrambled transmissions programming when the optional UT-98 or UT-112 is installed.

  • Page 15: Dualwatch/Tri-Watch

    DUAL WATCH/TRI-WATCH I Description I Operation q Select the desired operating channel. Dualwatch monitors channel 16 while you are receiving an- w Select dualwatch or tri-watch in set mode. (p. 31) other channel; tri-watch monitors channel 16 and the call e Push [CH/WX•DW•U/I/C] for 1 sec.

  • Page 16: Scan Operations

    SCAN OPERATIONS I Scan types Scanning is an efficient way to locate signals quickly over a Set the tag channels (scanned channel) before scanning. wide frequency range. The transceiver has priority scan and Clear the tag channels which inconveniently stop scanning, normal scan.

  • Page 17: I Setting Tag Channels

    SCAN OPERATION I Setting tag channels I Starting a scan For more efficient scanning, add desired channels as tag Set scan type (priority or normal scan) and scan resume timer channels or clear tag channels for unwanted channels. Chan- in advance using set mode. (p. 31) nels set as non-tag channels will be skipped during scanning.

  • Page 18: Dsc Operation

    DSC OPERATION I MMSI code programming I Position and time programming The 9-digit MMSI (DSC self ID) code can be programmed at A distress call should include the ship’s position and time. If power ON. no GPS is connected, your position and UTC (Universal Time Coordinated) time should be input.

  • Page 19: I Position Indication

    When no GPS receiver is connected, the transceiver displays the manually entered position and time. A GPS receiver appropriate for the IC-M502 is not supplied from Icom. An NMEA0183 ver. 2.0 is required for position in- t Rotate the channel selector to select the digit of current dication.

  • Page 20: I Distress Call

    DSC OPERATION I Distress call A distress call should be transmitted if, in the opinion of the Master, the ship or a person is in distress and requires imme- diate assistance. r When receiving the acknowledgment, reply to the con- NEVER USE THE DISTRESS CALL WHEN nected station via the microphone.

  • Page 21: I Transmitting Dsc Calls

    DSC OPERATION I Transmitting DSC calls t Push [DSC/ENT] to transmit the individual call. • Channel 70 is selected and the individual call is transmitted to the selected station. Transmitting individual call • If channel 70 is busy, the transceiver standbys until the channel The individual call function allows you to transmit a DSC sig- becomes clear.
  • Page 22 DSC OPERATION Transmitting individual acknowledgement Transmit an acknowledgement (‘able to comply’ or ‘unable to comply’) 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. y If you select ‘Unable,’...
  • Page 23 DSC OPERATION t The all ships call has been transmitted. Transmitting all ships call Large ships use channel 70 as their “listening channel.” When you want to announce a message to these ships, use the “all ships call” function. q Select a desired channel other than channel 70. w Push [DSC/ENT] to select the DSC menu.
  • Page 24 DSC OPERATION Transmitting position request call Transmit a position request call when you want to know your friend’s current position, etc. q Select a desired channel other than channel 70. w Push [DSC/ENT] to select the DSC menu. y Push [PTT] or rotate the channel selector to exit the condi- e Rotate the channel selector to select “POS request”...

  • Page 25: I Setting The Distress Information

    DSC OPERATION I Setting the distress information r The position information appears. Set the current position, then push [DSC/ENT]. • Rotate the channel selector to select the character. The nature of the distress call should be included in the dis- •...

  • Page 26: I Dsc Individual Id

    DSC OPERATION I DSC individual ID A total of 40 DSC address ID’s can be programmed and named with up to 10 characters. Programming address ID t Push [DSC/ENT] to program and to exit the condition. q Push [DSC/ENT] to select the DSC menu. w Rotate the channel selector to select “Set-up”...

  • Page 27: I Receiving Dsc Calls

    DSC OPERATION I Receiving DSC calls r Select the desired ID name with the channel selector, then push [DSC/ENT]. Receiving a distress call While monitoring channel 70 and a distress call is received: ➥ Emergency alarm sounds for 2 minutes. •...
  • Page 28 DSC OPERATION Receiving a distress relay acknowledgement Receiving an all ships call While monitoring channel 70 and a distress relay acknowl- While monitoring channel 70 and an all ships call is received: ➥ Emergency alarm sounds when the category is “Distress” edgement is received: ➥...
  • Page 29 DSC OPERATION Receiving a position reply call While monitoring channel 70 and a position reply call (for the area you are in) is received: ➥ “Received POS” appears in the display. Receiving a geographical area call While monitoring channel 70 and a geographical area call (for the area you are in) is received: ➥...

  • Page 30: I Dsc Set Mode

    DSC OPERATION I DSC set mode r Set the offset time from the UTC (Universal Time Coordi- nated) time, then push [DSC/ENT]. • Rotate the channel selector to select the number, ‘+’ or ‘–.’ Offset time • Push [CH/WX] to advance the cursor. This item sets the offset time from the UTC (Universal Time •...
  • Page 31 DSC OPERATION MMSI code check The 9-digit MMSI (DSC self ID) code can be checked in set mode. 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,’ then push [DSC/ENT].

  • Page 32: I Receive Messages

    DSC OPERATION I Receive messages t Rotate the channel selector to scroll the message. • The stored message has several information and depends on the distress call types. The transceiver automatically stores up to 20 distress mes- sages and 20 other messages. The messages can be used as an assistance to the logbook.

  • Page 33: Intercom Operation

    • When a WX alert is received, “WX ALT” flashes and a • “TALK” or “LSTN” appears on the caller or listener function dis- play, respectively. beep sounds. The WX alert sounds after the intercom use • To adjust the IC-M502’s speaker output level, rotate [VOL]. is finished.

  • Page 34: Set Mode

    SET MODE I Set mode programming q Turn power OFF. Set mode is used to change the conditions of the trans- w While pushing [16•9], turn power ON to enter set mode. ceiver’s functions: scan mode (normal or priority), scan re- e After the display appears, release [16•9].

  • Page 35: I Set Mode Items

    SET MODE I Set mode items Weather alert An NOAA broadcast station transmits a weather alert tone be- Scan mode fore important weather information. When the weather alert function is turned ON, the transceiver detects the alert, then The transceiver has 2 scan modes: normal scan and priority flashes the “WX ALT”...
  • Page 36 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 transceiver monitors channel 16 and 70 alternately until the distress sig- nal disappears. If a signal is received on another channel, DSC watch pauses until the signal disappears.

  • Page 37: Set Mode

    SET MODE LCD contrast Scrambler code This item adjusts the contrast of the LCD in 8 steps. When an optional scrambler unit is connected, the scrambler code can be set depending on dealer setting. When the UT-98 or UT-112 is installed, 128 or 32 codes (0 to 127 or 1 to 32) can be selected, respectively.

  • Page 38: Connections And Maintenance

    CONNECTIONS AND MAINTENANCE I Supplied accessories I Antenna The following accessories are supplied: Qty. A key element in the performance of any communication sys- q Mounting bracket ............1 tem is an antenna. Ask your dealer about antennas and the w Microphone hanger (OPC-562) ........

  • Page 39: I Connections

    CONNECTIONS AND MAINTENANCE I Connections CAUTION: Transmitting without an antenna may dam- age the transceiver. r GPS RECEIVER JACK Connects to an optional GPS receiver to input the position data and time data. • An NMEA0183 ver. 2.0 is required for position or time indication, etc.

  • Page 40: I Mounting The Transceiver

    CONNECTIONS AND MAINTENANCE I Mounting the transceiver • OVERHEAD MOUNTING Using the supplied mounting bracket The universal mounting bracket supplied with your transceiver allows overhead or dashboard mounting. • Mount the transceiver securely with the 2 supplied screws (M5 × 20) to a surface which is more than 10 mm thick and can support more than 5 kg.
  • Page 41 CONNECTIONS AND MAINTENANCE r Attach the clamps on either side of the IC-M502. Using the optional mounting bracket • Make sure that the clamps align parallel to the IC-M502’s body. An optional MB-75 is available for mounting FLUSH MOUNT the transceiver to a flat surface such as an instrument panel.

  • Page 42: I Optional Unit Installation

    CONNECTIONS AND MAINTENANCE I Optional unit installation CAUTION: w Remove the 4 screws from the shielding plate, then lift up DISCONNECT the DC power cable from the transceiver before performing any work on the transceiver. the shielding plate. e Plug an optional unit to J6 on the MAIN unit as shown Otherwise, there is danger of electric shock and/or equip- ment damage.

  • Page 43: I Dimensions

    CONNECTIONS AND MAINTENANCE I Dimensions...

  • Page 44: Troubleshooting

    TROUBLESHOOTING...

  • Page 45: Channel List

    CHANNEL LIST NOTE: Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CANNOT be lawfully used by the general public in U.S.A. waters.

  • Page 46: Specifications And Options

    SPECIFICATIONS AND OPTIONS I Specifications General Receiver • Frequency coverage • Receive system : Double conversion Transmit 156.025–157.425 MHz superheterodyne Receive 156.050–163.275 MHz • Sensitivity (12 dB SINAD) : Less than 0.25 µV (typical) • Mode : FM (16K0G3E) • Squelch sensitivity : Less than 0.3 µV DSC (16K0G2B) •...

  • Page 47: I Options

    SPECIFICATION AND OPTIONS I Options • MB-75 FLUSH MOUNT For mounting the transceiver to a panel. • SP-5 EXTERNAL SPEAKER A large, external speaker for superior audio output. • SP-10 EXTERNAL SPEAKER A compact, external speaker. Features easy installation. • UT-98 VOICE SCRAMBLER UNIT (pgs. 10, 33) •...

  • Page 48: Hm-127 Remote-Control Microphone

    Push and hold to transmit; release to receive. e CHANNEL UP/DOWN SWITCHES [Y Y ]/[Z Z ] The optional HM-127 remotely controls the IC-M502 and pro- ➥ Push either switch to change the operating channel, set vides an optional intercom function.
  • Page 49 • Some channels are set to low power only. ➥ While pushing this switch, other switches perform sec- (pgs. 29, 56) ➥ Calls the IC-M502 when pushed and held while in inter- ondary functions. ➥ Toggles the all key lock function ON or OFF when com mode.

  • Page 50: I Function Display

    HM-127 REMOTE-CONTROL MICROPHONE I Function display ➥ In set mode, indicates the selected condition. (pgs. 30, r VOLUME INDICATOR (p. 51) Appears while audio output level is adjusted. t SQUELCH INDICATOR (p. 51) Appears while noise squelch level is adjusted. y CHANNEL NAME INDICATOR ➥...

  • Page 51: I Hm-127 Supplied Accessories

    HM-127 REMOTE-CONTROL MICROPHONE I HM-127 supplied accessories !1 DUAL/TRI WATCH INDICATOR (pgs. 11, 54) “DUAL” appears during dualwatch; “TRI” during tri-watch. Accessories included with the HM-127: Qty. !2 WEATHER CHANNEL INDICATOR (pgs. 7, 50) q Connection cable (OPC-1000: 6 m; 20 ft) ...... 1 ➥...

  • Page 52: I Installation

    HM-127 REMOTE-CONTROL MICROPHONE I Installation w To use the supplied cable as a wall socket, follow the fol- lowing steps. e Using the mounting base, carefully mark off the 2 spots The optional HM-127 can be connected to the transceiver di- where the cable and screws will be fastened.
  • Page 53 HM-127 REMOTE-CONTROL MICROPHONE...

  • Page 54: I Channel Selection

    HM-127 REMOTE-CONTROL MICROPHONE I Channel selection Channel 16 U.S.A., International and Canadian q Push [16] to select channel 16. channels w Push [CH/WX] to return to the q Push [CH/WX] to select regular channel. condition before selecting chan- • Push [CH/WX] again, if weather channel appears. nel 16, or push [Y] or [Z] to se- w Push [CH/WX•U/I/C], while pushing [H/L], to select chan- lect operating channel.

  • Page 55: I Receiving And Transmitting

    HM-127 REMOTE-CONTROL MICROPHONE I Receiving and transmitting t Push and hold [PTT] to transmit, then speak into the mi- q Push [PWR] to turn power ON. crophone. w Push [VOL], then [Y]/[Z] to adjust audio output level. • “ ” appears. •...

  • Page 56: I Lock Functions

    HM-127 REMOTE-CONTROL MICROPHONE I Lock functions I Display backlighting The lock function electronically locks keys and switches to The function display and switches can be backlit for better prevent accidental changes and function access from the mi- visibility under low light conditions. And the backlighting con- crophone.

  • Page 57: I Call Channel Programming

    HM-127 REMOTE-CONTROL MICROPHONE I Call channel programming I Optional voice scrambler operation q Push [CH/WX•U/I/C] several times while pushing [H/L] to select the Activating the scrambler desired channel group (USA, INT, q Select an operating channel, except channel 16 or weather CAN) to be programmed.

  • Page 58: I Starting A Scan

    HM-127 REMOTE-CONTROL MICROPHONE I Starting a scan I Setting tag I Dualwatch/Tri- channels watch operation q Push [CH/WX•U/I/C] several times while pushing [H/L] to select the q Push [CH/WX•U/I/C] several times q Push [Y]/[Z] to select the desired channel group (USA, INT, CAN), if while pushing [H/L] to select the channel.

  • Page 59: I Set Mode Programming

    HM-127 REMOTE-CONTROL MICROPHONE I Set mode programming Set mode is used to change the condition of the transceiver’s • Beep tone “BEEP” ➥ Push [Y] to turn ON, [Z] to turn OFF the beep output. functions and the microphone’s own functions: Transceiver’s functions—...

  • Page 60: I Intercom Operation

    HM-127 REMOTE-CONTROL MICROPHONE I Intercom operation I Channel names q Push [LO/DX•IC] for 1 sec. to ac- q Push [Y]/[Z] to select a channel to program. tivate the intercom function. • Push [CH/WX•U/I/C] several times while pushing [H/L] to select the channel group (USA, INT, CAN), if desired.

  • Page 61: Template

    TEMPLATE...
  • Page 62 Count on us! A-5663H-1EX-r Printed in Japan 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan © 2000 Icom Inc.

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