IC-M604. We want to take a couple of moments of your time to thank you for making the IC-M604 your radio of choice, and hope you agree with Icom’s philosophy of “technology first.” Many EXPLICIT DEFINITIONS hours of research and development went into the design of your IC-M604.
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.
RADIO OPERATOR WARNING Icom requires the radio operator to meet the FAILURE TO OBSERVE THESE LIMITS MAY ALLOW FCC requirements for radio frequency exposure. THOSE WITHIN THE MPE RADIUS TO EXPERIENCE RF An omnidirectional antenna with gain not greater RADIATION ABSORPTION WHICH EXCEEDS THE FCC than 9 dBi must be mounted a minimum of 5 me- MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMIT.
TABLE OF CONTENTS I DSC address ID ..............16 FOREWORD ................... i I Position and Time programming .......... 18 IMPORTANT ..................i I Position and Time indication ..........19 EXPLICIT DEFINITIONS ..............i I GPS information indication ..........19 IN CASE OF EMERGENCY ............ii I Distress call .................
Changes or modifications to this device, not ex- BE CAREFUL! The transceiver rear panel will become pressly approved by Icom Inc., could void your authority to hot when operating continuously for long periods. operate this device under FCC regulations. Place the transceiver in a secure place to avoid inadvertent...
OPERATING RULES D D PRIORITIES (2) OPERATOR’S LICENSE 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.
PANEL DESCRIPTION I Panel description t POWER KEY [POWER] (p. 9) Speaker Function display (p. 4) ➥ Push to turn power ON. ➥ Push and hold for 1 sec. to turn power OFF. iM604 VHF MARINE y CHANNEL 16/CALL CHANNEL KEY [!6 • 9] ➥...
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PANEL DESCRIPTION !0 TRANSMIT POWER KEY [H/L] ➥ Number input: ‘2’ ➥ Push to toggle the output power high or low. (p. 9) ➥ Comment input: ‘2,’ ‘A,’ ‘B,’ ‘C’ ‘a,’ ‘b’ or ‘c’ ➥ After pushing [F], push to turn the Tri-watch •...
PANEL DESCRIPTION I Function display ➥ Number input: ‘7’ ➥ Comment input: ‘7,’ ‘P,’ ‘R,’ ‘S,’ ‘p,’ ‘r’ or ‘s’ ➥ After pushing [F], push to turn the Hailer func- q w e r t tion ON or OFF. (p. 40) ➥...
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PANEL DESCRIPTION t CHANNEL GROUP INDICATOR (p. 8) !1 POSITION INDICATOR ➥ Shows the GPS position data. Indicates whether an U.S.A. “U U S S A A ,” International “I I N N T T ,” Canadian “C C A A N N ” or weather “W W X X ” channel is in use. •...
PANEL DESCRIPTION I Microphone Microphone Speaker q PTT SWITCH [PTT] Push and hold to transmit; release to receive. (p. 9) w CHANNEL UP/DOWN KEYS [Y Y ]/[Z Z ] ➥ Push either key to change the operating channels, Set mode settings, etc. (pgs. 7–9, 43) ➥...
BASIC OPERATION I Channel selection D D Channel 16 D D 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.
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BASIC OPERATION D D U.S.A., International and Canadian channels D D Weather channels The IC-M604 is pre-programmed with 59 U.S.A., 59 interna- The IC-M604 has 10 pre-programmed weather channels. tional and 63 Canadian channels. These channel groups may These are used for monitoring broadcasts from NOAA (Na- be specified for the operating area.
BASIC OPERATION I Receiving and transmitting CAUTION: Transmitting without an antenna will damage Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CANNOT the transceiver. be lawfully used by the general public in U.S.A. waters. q Push [POWER] to turn power ON. IMPORTANT: To maximize the readability of your trans- w Set the audio and squelch levels.
BASIC OPERATION I Call channel programming I Microphone lock function Call channel is used to select Channel 9 (default), however, The Microphone lock function electrically locks [Y]/[Z] and you can program the call channel with your most often-used [HI/LO] keys on the supplied microphone. This prevents ac- channels in each channel group for quick recall.
12:00 :00PLEASURE__ PLEASURE__ The IC-M604 uses a new technology to clear water away from the speaker grill: AquaQuake. AquaQuake helps drain e Push the appropriate key several times to enter the de- water away from the speaker housing (water that might oth- sired character.
BASIC OPERATION I Optional Voice scrambler operation D D Activating the scrambler function 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- tions. In order to receive or send scrambled transmissions you able for programming when an optional scrambler unit is in- must first activate the scrambler function.
DUALWATCH/TRI-WATCH I Description I Operation q Select the desired channel. Dualwatch monitors Channel 16 while you are receiving w Push [F], then push [1• on another channel; Tri-watch monitors Channel 16 and the DUAL ] to start Dualwatch or call channel while receiving another channel. Dualwatch/Tri- [2•...
SCAN OPERATION 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.
SCAN OPERATION I Setting TAG channels I 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. 43) Channels that are not tagged will be skipped during scanning.
DSC OPERATION I MMSI code programming I DSC address ID The 9-digit MMSI (Maritime Mobile Service Identity: DSC self A total of 100 DSC address IDs can be programmed and ID) code can be programmed at power ON. named with up to 10 characters. D D Programming Individual ID This code programming can be performed only twice.
DSC OPERATION D D Deleting Individual ID --DSC Menu-- q Enter “D D E E L L : : I I N N D D V V I I D D ” in DSC Set up menu. Add:Group ID Input 8 digits ➪...
DSC OPERATION I Position and Time programming A Distress call should include the ship’s position and time --DSC Menu-- data. If no GPS is connected, your position and UTC (Univer- Input Position sal Time Coordinated) time should be input manually. They Latitude __°__.___N Null...
[ENT] for 1 sec. the manually entered position and time. --GPS Info-- Push for 1 sec. A GPS receiver appropriate for the IC-M604 is not supplied DATE : JUN/16/2006 : 12:00 from Icom. A GPS receiver with NMEA0183 ver. 2.0 or 3.01 34°34.506N...
DSC OPERATION I Distress call e After transmitting the call, the transceiver waits for an ac- A Distress call should be transmitted if, in the opinion of the Master, the ship or a person is in distress and requires imme- knowledgment call on Channel 70.
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DSC OPERATION D D Regular call r After receiving the acknowledgment, reply using the mi- crophone. The nature of the Distress call should be included in the Dis- tress call. q Enter “D D i i s s t t r r e e s s s s S S e e t t t t i i n n g g ” in DSC menu. Received D D S S C C M M e e n n u u ...
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DSC OPERATION e The position information appears. Edit your position (lati- t Push [DISTRESS] for 5 sec. to transmit the Distress call. tude and longitude) data directly with the keypad. • While pushing [DISTRESS], the key backlighting blinks. • The selected nature of the distress is stored for 10 minutes. •...
DSC OPERATION I Transmitting DSC calls u After receiving the acknowledgment, reply using the mi- crophone. To ensure correct operation of the DSC function, please make sure you set the squelch correctly. (p. 9) Received D D Transmitting an Individual call DistressACK The Individual call function allows you to transmit a DSC sig- <Osaka Bay...
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DSC OPERATION e Rotate [SELECTOR] to select a desired intership channel y When the acknowledgement ‘Able to comply’ is received, the specified channel (in step e) is selected with beeps or “M M a a n n u u a a l l I I n n p p u u t t ,” push [ENT]. •...
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DSC OPERATION D D Transmitting an Individual Acknowledgement e Rotate [SELECTOR] to select “A A b b l l e e t t o o C C o o m m p p l l y y ” or When receiving an Individual call, you can transmit an ac- “U U n n a a b b l l e e t t o o C C o o m m p p l l y y ,”...
Push [ENT] to transmit the Group call. Select Address • If Channel 70 is busy, the transceiver stands by until the channel Manual Input becomes clear. ˘Icom Coast station t After the Group call has been transmitted, the following in- dication is displayed. <CLR˘Exit / ENT˘OK>...
DSC OPERATION D D Transmitting an All Ships call e Push [ENT] to transmit the All ships call. Large ships use Channel 70 as their ‘listening channel.’ When • Channel 70 is selected and the All ships call is transmitted. you want to announce a message to all ships within range, r After the All ships call has been transmitted, the following use the ‘All Ships Call’...
DSC OPERATION D D Transmitting a Position Request call r After the Position Request call has been transmitted, the Transmit a Position Request call when you want to know a following indication is displayed. specific ship’s current position, etc. q Enter “P P o o s s i i t t i i o o n n R R e e q q u u e e s s t t ” in DSC menu. Position Request TX Complete D D S S C C M M e e n n u u ...
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DSC OPERATION D D Transmitting a Position Report call e The position information appears. Edit your position data Transmit a Position Report call when you want to announce (latitude and longitude) directly with the keypad. (p. 18) your own position to a specific ship and to get an answer, etc. r After editing the position data, push [ENT] to set.
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DSC OPERATION D D Transmitting a Polling Request call e Push [ENT] to transmit the Polling Request call. Transmit a Polling Request call when you want to know a r After the Polling Request call has been transmitted, the fol- specific vessel is within communication range.
DSC OPERATION D D Transmitting a Position Reply call D D Transmitting a Position Report Reply call Transmit a Position Reply call when a Position Request call is Transmit a Position Report Reply call when a Position Report received. call is received. q Enter “P P o o s s i i t t i i o o n n R R e e p p l l y y ”...
DSC OPERATION I Receiving DSC calls D D Receiving a Distress Acknowledgement While monitoring Channel 70 and a Distress acknowledge- D D Receiving a Distress call ment to other ship is received: ➥ The emergency alarm sounds for 2 minutes. While monitoring Channel 70 and a distress call is received: ➥...
DSC OPERATION D D Receiving a Geographical Area call D D Receiving a Position Request call While monitoring Channel 70 and a Geographical Area call While monitoring Channel 70 and a Position Request call is (for the area you are in) is received: received: ➥...
DSC OPERATION D D Receiving a Polling Request call D D Receiving a Position Report Reply call While monitoring Channel 70 and a Polling Request call is re- While monitoring Channel 70 and a Position Report Reply call ceived: is received: ➥...
DSC OPERATION I Received messages D D Other messages The transceiver automatically stores up to 20 distress mes- q Enter “O O t t h h e e r r ” in DSC menu. sages and 20 other messages. The messages can be used as an assistance to the logbook.
DSC OPERATION I DSC Set mode D D Add Individual ID/Group ID D D Automatic Acknowledgement (See pgs. 16, 17) D D Delete Individual ID/Group ID This item sets the automatic acknowledgement function to (See p. 17) ON or OFF. When a position request, position report or polling request call D D MMSI Code Check is received, the transceiver automatically transmits a position...
DSC OPERATION D D Offset Time D D NMEA Output This item sets the offset time from the UTC (Universal Time Select an NMEA Output function from List Station, All Station Coordinated) time. or OFF. When receiving position acknowledgment, the transceiver q Enter “O O f f f f s s e e t t T T i i m m e e ”...
” or “ ” appears on the HM-157. • “W W A A I I T T ” appears on the IC-M604 or HM-162 if it is idle. When the connected COMMANDMIC™ is one, step w • To adjust the IC-M604’s speaker output level, rotate [VOL].
To return to normal operation, push [CLR] or repeat step The IC-M604 has a 2-way hailer function for voice amplifica- tion and reception over a loudspeaker, making it unnecessary to leave the bridge to hear a hailing party. During hailer oper- •...
OTHER FUNCTIONS I Automatic foghorn The automatic foghorn function sounds a horn repeatedly The foghorn outputs from the hailer speaker. To use this func- until the function is turned OFF. Four patterns are available tion, the hailer speaker must be connected to the transceiver. for varying conditions.
I RX speaker function q Push [F], then push [8• ] to enter auto foghorn mode. The IC-M604 has an RX speaker function. When this func- Push tion is turned ON, the received audio can be heard on the ˘ UNDERWAY...
SET MODE I Set mode programming I Set mode items D D Scan type Set mode is used to change the conditions of the trans- ceiver’s functions: Scan type, Scan resume timer, Weather The transceiver has 2 scan types: normal scan and priority alert, Beep tone, Internal speaker, LCD contrast, Attenuation scan.
SET MODE D D Weather alert --Set Mode-- Internal Speaker A NOAA broadcast station transmits a weather alert tone be- (Default: ON) ˘ON fore important weather information. When “O O N N ” is selected, the previously selected (used) weather channel is checked any time during standby or while scanning.
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SET MODE D D Scrambler code --Set Mode-- Foghorn Frequency Frequency (Appears when a scrambler unit is installed) ˘400 ≤ When an optional scrambler unit is installed, the scrambler (Default: 400) code can be set depending on dealer setting. ≥ When the UT-112 is installed, 32 codes (1 to 32) can be se- <CLR <CLR˘Exit / ENT...
CONNECTIONS AND MAINTENANCE I Connections r EXTERNAL MICROPHONE CONNECTORS [COMMAND MIC-1]/[COMMAND MIC-2] Connects the optional COMMANDMIC™ (HM-157/HM- 162.) CAUTION: NEVER connect other microphone here, such as the HM-134, may cause damage to the trans- ceiver. t GPS RECEIVER/EXTERNAL SPEAKER CONNECTOR ➥...
CONNECTIONS AND MAINTENANCE I Supplied accessories y DC POWER CONNECTOR The following accessories are supplied Connects the supplied DC power cable from this connector to an external 13.8 V DC power source. Mounting bracket For mounting bracket CAUTION: After connecting the DC power cable, cover Knob bolts Flat washers (M5) the connectors with a rubber vulcanising tape as shown...
CONNECTIONS AND MAINTENANCE I Mounting the transceiver D D Using the supplied mounting bracket • OVERHEAD MOUNTING The universal mounting bracket supplied with your transceiver allows overhead or onboard mounting. Sponge* • Mount the transceiver securely with the 4 supplied screws (M5 ×...
FLUSH MOUNT KIT the transceiver to a flat surface such as an instrument panel. • Make sure that the clamps align parallel to the IC-M604’s body. CAUTION: KEEP the transceiver and microphone at least 1 meter away from your vessel’s magnetic navigation com- pass.
CONNECTIONS AND MAINTENANCE I Optional unit installation w Turn the transceiver upside down, then disconnect the flat CAUTION: DISCONNECT the DC power cable from the transceiver before performing any work on the transceiver. cables and Rear mic control (6-pin) from LOGIC board, Otherwise, there is danger of electric shock and/or equip- and Front mic control (2-pin) and Volume control (3-pin) ment damage.
CONNECTIONS AND MAINTENANCE I HM-157/HM-162 installation e Install an optional unit to J3 on the AF board as shown below. Optional unit AF board HM-157 HM-162 The optional HM-157 can be connected to the transceiver di- rectly, as well as via the supplied connection cable for longer r Assemble the units to their original positions.
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CONNECTIONS AND MAINTENANCE q Insert the supplied cable (or HM-157 without the cable) t Install the mounting base using the supplied screws as into the [COMMAND MIC-1] or [COMMAND MIC-2] con- shown below. nector and tighten the cable nut as shown below. •...
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CONNECTIONS AND MAINTENANCE HM-162 HM-157 Mounting base Mounting base Gasket Gasket...
TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION REF. The transceiver does • Bad connection to the power supply. • Check the connection to the transceiver. pgs. 46, not turn ON. No sound from speaker. • Squelch level is too high. • Set [SQL] to the threshold point. p.
SPECIFICATIONS AND OPTIONS I Specifications D D General D D Receiver • Frequency coverage : TX 156.025–157.425 MHz • Receive system : Double conversion superheterodyne RX 156.050–163.275 MHz • Sensitivity (12 dB SINAD) : 0.22 µV (typical) • Mode : FM (16K0G3E), DSC (16K0G2B) 0.22 µV (typical) (CH 70 receiver) •...
SPECIFICATIONS AND OPTIONS I Options D D Dimensions • MB-75 FLUSH MOUNT KIT For mounting the transceiver to a panel. • HM-157 ™ COMMANDMICII External microphone-type controller. Provides optional inter- com operation. 6 m (20 feet) microphone cable and mount- ing base included.
CHANNEL LIST Channel number Frequency (MHz) Channel number Frequency (MHz) Channel number Frequency (MHz) Channel number Frequency (MHz) CAN Transmit Receive CAN Transmit Receive CAN Transmit Receive CAN Transmit Receive 156.050 160.650 157.050 161.650 156.425 156.425 157.325 157.325 156.050 156.050 21A 157.050 157.050 156.475 156.475 157.375 161.975...
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