Radio RIG ICOM IC-M304 Marine VHF


Specifications

General
Frequency range
Tx
Rx

156.025–157.425 MHz
156.050–163.275 MHz
Usable channelsUSA, CAN, INT, WX channels
Type of emission16K0G3E, 16K0G2B
Power supply13.8V DC ±15%
Current drain (at 13.8V DC)
Tx
Rx

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 :50Ω (SO-239)
Dimensions (W×H×D,
projections not included)
153×67×133mm ;
6132×258×514 in.
Weight (approx.)825g; 1.8lb
NMEA formatsNMEA version 2.0 or 3.01
RMC, GGA, GNS, GLL
Transmitter
Output power25W or 1W (at 13.8V DC)
Modulation systemVariable reactance frequency modulation
Max. freq. deviation±5 kHz
Frequency error±10ppm
Spurious emissionsLess than –70dBc (at 25W)
Adj. channel powerMore than 70dB
Audio harmonic distortionLess than 10% (at 60% dev.)
Residual modulationMore than 40dB
Receiver
Intermediate freq.1st 21.7 MHz, 2nd 450 kHz
Sensitivity0.22μV typical at 12dB SINAD
Squelch sensitivityLess than 0.22μV
Adj. Ch. selectivityMore than 70dB
Spurious responseMore than 70dB
IntermodulationMore than 70dB
Hum and noiseMore than 40dB
Audio output power4.5W typical at 10% distortion with a 4Ω load
Measurements made in accordance with TIA/EIA 603. All stated specifications are subject to change without notice or obligation.

Color versions

  • Black
  • Super white
  • Gray

Supplied accessories

  • Hand microphone
  • DC power cable
  • Mounting bracket kit