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INSTRUCTION MANUAL
VHF MARINE TRANSCEIVER
iM504
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FOREWORD IMPORTANT Thank you for purchasing this Icom product. The IC-M504 READ ALL INSTRUCTIONS carefully and completely VHF MARINE TRANSCEIVER is designed and built with Icom’s before using the transceiver. state of the art technology and craftsmanship. With proper care, this product should provide you with years of trouble- SAVE THIS INSTRUCTION MANUAL — This in- free operation. struction manual contains important operating instructions for the IC-M504. We want to take a couple of moments of
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IN CASE OF EMERGENCY NOTE If your vessel requires assistance, contact other vessels and A WARNING STICKER is supplied with the transceiver. the Coast Guard by sending a Distress call on Channel 16. To comply with FCC regulations, this sticker must be affixed in such a location as to be readily seen from the operating con- USING CHANNEL 16 trols of the radio as in the diagram below. Make sure the cho- DISTRESS CALL PROCEDURE sen location is clean and dry before applying the sticker. 1. “MAYDAY MAY
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RADIO OPERATOR WARNING Icom requires the radio operator to meet the FAILURE TO OBSERVE THESE LIMITS MAY ALLOW FCC Requirements for Radio Frequency Expo- THOSE WITHIN THE MPE RADIUS TO EXPERIENCE RF sure. An omnidirectional antenna with gain not RADIATION ABSORPTION WHICH EXCEEDS THE FCC greater than 9 dBi must be mounted a minimum MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMIT. WARNING of 5 meters (measured from the lowest point of IT IS THE RESPONSIBILITY OF THE RADIO OPERATOR the antenna) vertically
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1 TABLE OF CONTENTS 2 FOREWORD …………………………………………………………… i Position and time programming ……………………………… 21 3 IMPORTANT …………………………………………………………… i Position and time indication …………………………………… 22 EXPLICIT DEFINITIONS ……………………………………………… i GPS information indication …………………………………… 22 4 IN CASE OF EMERGENCY…………………………………………… ii Distress call …………………………………………………… 23 NOTE …………………………………………………………………… ii Transmitting DSC calls ………………………………………… 26 5 RADIO OPERATOR WARNING ……………………………………… iii Receiving
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PRECAUTIONS BE CAREFUL! The transceiver rear panel will become RWARNING! NEVER connect the transceiver to an AC hot when operating continuously for long periods. outlet. This may pose a fire hazard or result in an electric Place the transceiver in a secure place to avoid inadvertent shock. use by children. CAUTION: Changes or modifications to this device, not ex- pressly approved by Icom Inc., could void your authority to BE CAREFUL! The transceiver and the optional HM-162 operate this device und
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OPERATING RULES 1 (2) OPERATOR’S LICENSE D D PRIORITIES 1 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. take priority over all others. The Restricted Radiotelephone Operator Permit must be • You must monitor Channel 16 when you are not operating posted or kept with the
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PANEL DESCRIPTION 2 Front panel r HAIL/RX SPEAKER KEY [HAIL•RX ] Speaker Function display (p. 4) ➥ Push to turn the hailer mode ON or OFF. (p. 52) ➥ Push and hold for 1 sec. to turn the RX Speaker mode ON or OFF. (p. 51) q ➥ While pushing and holding [H/L], push to turn the auto foghorn function ON. (p. 54) w t ATTENUATOR/INTERCOM KEY [LO/DX•IC•SCRM] e ➥ Push to turn the Attenuator function ON or OFF. (p. 8) r •“L LO OC C” appears when the Attenuator function is turned ON. t ➥ Push and hold fo
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PANEL DESCRIPTION 2 u CHANNEL SELECTOR [DIAL•ENTER] o SQUELCH CONTROL [SQL] 2 ➥ Rotate to select the operating channels, Set mode set- Rotate to set the squelch threshold level. (p. 8) tings, etc. (pgs. 6–8, 55) ! SCAN/TAG KEY [SCAN•TAG] (p. 13) ➥ While pushing and holding [H/L], rotate to adjust the ➥ Push to start and stop Normal or Priority scan. brightness of the LCD and key backlight. (p. 10) ➥ Push and hold for 1 sec. to set or clear the displayed ➥ Push to enter the input channel comment,
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2 PANEL DESCRIPTION Function display y CALL CHANNEL INDICATOR (pgs. 6, 9) qw er t y Appears when the call channel is selected. u LOW BATTERY INDICATOR ! BUSY 25W INT CALL Blinks when the battery voltage drops to approx. 10 V DC u ! LOC RX DUP or below. ! SCRAM TAG i CHANNEL NUMBER READOUT ! NORMAL SCAN i Indicates the selected operating channel number. o CHANNEL COMMENT INDICATOR -34°34.506N ! Channel comment appears if programmed. (p. 10) 123°23.236W ! TIME ZONE INDICATOR o ! Local 1:10 CALLI
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PANEL DESCRIPTION 2 Microphone 2 ! POSITION INDICATOR q ➥ Shows the GPS position data. •“? ?? ?” may blink every 2 sec. instead of position data when the Microphone GPS position data is invalid. In such a case, the last position data is held for up to 23.5 hours. •“? ?? ?” may blink every 2 sec. instead of position data 4 hours after the position data is input manually, up until 23.5 hours have past. w e ➥ “N No o P Po os si it ti io on n” appears when no GPS receiver is connected and no posit
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BASIC OPERATION 3 Channel selection ï ï Channel 16 ï ï Channel 9 (Call channel) Channel 16 is the distress and safety channel. It is used for Each regular channel group has a separate leisure-use call establishing initial contact with a station and for emergency channel. The call channel is monitored during Tri-watch. The communications. Channel 16 is monitored during both Dual- call channels can be programmed (p. 9) and are used to store watch and Tri-watch. While standing by, you must monito
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BASIC OPERATION 3 ï ï U.S.A., international and Canadian channels ï ï Weather channels The IC-M504 is pre-programmed with 57 U.S.A., 57 interna- The IC-M504 has 10 pre-programmed weather channels. tional and 61 Canadian channels. These channel groups may These are used for monitoring broadcasts from NOAA (Na- be specified for the operating area. tional Oceanographic and Atmospheric Administration.) 3 The transceiver can automatically detect a weather alert tone q Push [CH/WX•DUAL•U/I/C] to select
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3 BASIC OPERATION Receiving and transmitting CAUTION: Transmitting without an antenna may dam- Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CAN- age the transceiver. NOT be lawfully used by the general public in U.S.A. wa- ters. q Push [POWER] to turn power ON. IMPORTANT: To maximize the readability of your trans- w Set the audio and squelch levels. mitted signal, pause a few sec. after pushing [PTT], hold ➥ Rotate [SQL] fully counterclockwise in advance. the microphone 2 to 4 inches (5
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BASIC OPERATION 3 Call channel programming Call channel is used to select Channel 9 (default); however, r Rotate [DIAL] to select the 25W 25W INT INT CALL CALL DU DUP you can program the call channel with your most often-used desired channel. 3 channels in each channel group for quick recall. 34 34°34.506N 34.506N 123 123°23.236W 23.236W q While pushing and holding 25W 25W INT INT UTC UTC 12 12:00 :00 INTL INTL DUP DUP [H/L], push [CH/WX•DUAL• U/I/C] one or more times to t Push [16•9] to progr
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3 BASIC OPERATION Channel comments Microphone Lock function Memory channels can be labelled with a unique alphanumeric The Microphone Lock function electrically locks [Y]/[Z] and ID of up to 10 characters. [HI/LO] keys on the supplied microphone. This prevents ac- cidental channel changes and function access. Capital letters, small letters, 0 to 9, some symbols (– . /) and space can be used. ➥ While pushing and holding [HI/LO] on the microphone, turn power ON to toggle the Lock function ON a
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BASIC OPERATION 3 Optional voice scrambler operation D D Activating the scrambler D D Programming scrambler codes The optional voice scrambler provides private communica- There are 32 codes (1 to 32) or 128 codes (0 to 127)* avail- 3 tions. In order to receive or send scrambled transmissions able for programming when an optional scrambler unit is in- you must first activate the scrambler function. To activate the stalled. In order to understand one another, all transceivers function, an optiona
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SCAN OPERATION 4 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. such as those for digital communication use. (Refer to right page for details.) When the Weather Alert function is turned ON, the previously selected (last used) weather channel is also checked while Choose Priority or No
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SCAN OPERATION 4 Setting TAG channels Starting a scan For more efficient scanning, add the desired channels as TAG Set scan type (Priority or Normal scan) and scan resume channels or clear the TAG for unwanted channels. timer in advance, using Set mode. (p. 55) Channels that are not tagged will be skipped during scanning. q While pushing and holding [H/L], push [CH/WX•DUAL• 4 TAG channels can be assigned to each channel group (USA, U/I/C] to select the desired channel group (USA, INT, INT, CA
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DUALWATCH/TRI-WATCH 5 Description Operation Dualwatch monitors Channel 16 while you are receiving q Select Dualwatch or Tri-watch in Set mode. (p. 56) on another channel; Tri-watch monitors Channel 16 and the w Rotate [DIAL] to select the desired operating channel. call channel while receiving another channel. Dualwatch/Tri- e Push [CH/WX•DUAL•U/I/C] for 1 sec. to start Dualwatch watch is convenient for monitoring Channel 16 when you are or Tri-watch. •“D DU UA AL L 1 16 6” appears during Du
