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The M-304's wide LCD shows large channel numbers and channel names of up to 10 characters.
4 levels of LCD backlighting are available.
Force5Audio™
The speaker's high sound pressure level delivers loud and clear reception.
Background noise is blown away!
The microphone is tuned to pick up voice, while reducing ambient noise.
Built-in DSC capability
The DSC (Digital Selective Calling) allows you to send a formatted distress message in an emergency.
Position data is automatically exchanged between the two stations.
DSC uses a unique ID (MMSI code) similar to a telephone number, allowing you to make contact with a specific boater or group of boaters in your area.
A total of 100 address IDs can be stored with a 5-character name.
Submersible 1m depth for 30 minutes
The installation of the IC-M304 is not limited to covered areas. Be assured, the IC-M304 can handle all types of wet! Equivalent to JIS Grade 7.
General | |
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Frequency range Tx Rx |
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 | |
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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 |