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IC-M304

VHF Marine Transceiver

specifications

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General
Frequency range Tx Rx	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) 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 ; 61⁄32×25⁄8×51⁄4 in.
Weight (approx.)	825g; 1.8lb
NMEA formats	NMEA version 2.0 or 3.01 RMC, GGA, GNS, GLL

Transmitter
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

Receiver
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 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

Dimensions

Rear Panel Connections

FORCE5AUDIO logo is a registered trademark of Icom Inc. (Japan) in the United States.