Icom IC-M304

Icom IC-M304

Icom IC-M304


Icom IC-M304 Submersible dengan tubuh yang kompak dengan LCD besar dan Setara audio yang kuat untuk IPX7 (kedalaman 1m selama 30 menit, kecuali kabel). Built-in DSC yang memenuhi RTCM SC-101. Untuk panggilan gawat darurat, atau untuk laporan permintaan posisi.


Icom IC-M304 Radio Marine

Submersible compact body with large LCD and powerful audio


Compact and submersible

Equivalent to IPX7 (1m depth for 30 minutes, except cables).


Large easy-to-see LCD

Shows full size channel number with 4-step backlighting.


Built-in DSC that meets RTCM SC-101

For distress calls, or for position request/position report.


New Force5Audio™ speaker

Delivers impressive audio output with powerful bass.


Favorite channel function

Offers quick channel selection from the microphone up/down buttons.


AquaQuake draining function

The vibrating “buzz” sound clears water away from the speaker grill.


Weather channel with weather alert

Listen for important weather broadcasts


Dualwatch and Tri-watch functions

Monitors Ch.16 and/or call channel, while using another channel.


Also available in either black or gray

The M304 is available in black The M304 is available in gray

Color versions

  • Black
  • Super white
  • Gray

Supplied accessories

  • Hand microphone
  • DC power cable
  • Mounting bracket kit



Rear Panel Connections

Rear Panel Connections

Brosur Icom IC-M304



Frequency range
156.025–157.425 MHz
156.050–163.275 MHz
Usable channels USA, CAN, INT, WX channels
Type of emission 16K0G3E, 16K0G2B
Power supply 13.8V DC ±15%
Current drain (at 13.8V DC)
5.5A (at 25W output)
1.5A (at AF max.)
Operating temperature range –20°C to +60°C;–4°F to +140°F
Antenna impedance : 50 Ohms(SO-239)
Dimensions (W×H×D,
projections not included)
Weight (approx.) 825g; 1.8lb
NMEA formats NMEA version 2.0 or 3.01RMC, GGA, GNS, GLL
Output power 25W or 1W (at 13.8V DC)
Modulation system Variable reactance frequency modulation
Max. freq. deviation ±5 kHz
Frequency error ±10ppm
Spurious emissions Less than –70dBc (at 25W)
Adj. channel power More than 70dB
Audio harmonic distortion Less than 10% (at 60% dev.)
Residual modulation More than 40dB
Intermediate freq. 1st 21.7 MHz, 2nd 450 kHz
Sensitivity 0.22µV typical at 12dB SINAD
Squelch sensitivity Less than 0.22µV
Adj. Ch. selectivity More than 70dB
Spurious response More than 70dB
Intermodulation More than 70dB
Hum and noise More than 40dB
Audio output power 4.5W typical at 10% distortion with a 4 Ohms load

Measurements made in accordance with TIA/EIA 603. All stated specifications are subject to change without notice or obligation.


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