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Last modified 2025-01-13

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Icom IC-M603

A picture of Icom IC-M603

SPECIFICATIONS

GENERAL
Type:Marine VHF transceiver
Frequency range: TX: 156.000-161.450 MHz
RX: 156.000-163.425 MHz
Tuning steps:Channelized
Frequency stability:±5 ppm @ -20 to +60°C (-4 to +140°F)
Mode:FM
Channels / memory management: 57 international channels
Additional 61 US channels (UK version only)
ATIS and DSC channels (Holland and FRG versions only)
1 call
Alpha tags (Ten characters)
Duplex shift / offset:Automatic according to bandplan
Power supply:13.8 VDC (10.8-15.6 VDC)
Current drain / power consumption:RX: Max 1.5 A
TX: Max 5.5 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):220*110*109 mm (8.66*4.33*4.29")
Weight:1.4 Kg (3.09 lb)
Other features: Channel 16 button. Class D DSC. Dual/triwatch. Scanning.
Hailer. Foghorn. Intercom. AquaQuake water draining.
Scrambler option. GPS option (NMEA input).




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: ? MHz
2nd IF: ? KHz
Sensitivity:0.56 uV (20 dB SINAD)
Squelch sensitivity:Less than 0.56 uV (Threshold)
Selectivity:75 dB (Adjacent channel)
Image rejection:
AF output power / speaker:2 W at 10% distortion / 4 ohm
External speaker connector:




TRANSMITTER SECTION
RF output power: High: 25 W
Low: 1 W
Modulation system:Variable reactance frequency modulation
Max FM deviation (Factory set):±5 KHz
Spurious emissions:Less than 0.25 uW
Microphone impedance / connector: Front jack
2 Kohm / 8-pin (Standard mike only!)
Rear jacks
2 Kohm / 8-pin (HM-162E only!)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 2006-20xx (Discontinued)
Additional info:
Related documents:User manual (973 KB)
Modifications and fixes:
Reviews:
Options / Accessories:
HM-162E
MB-75
OPC-1000
OPC-1541
UT-112
CommandMic III
Flush mount
Microphone extension cable (For standard mic)
Microphone extension cable (For HM-162E)
Voice scrambler unit