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IC-M304 (VHF Marine)

Icom IC-M304 VHF Marine Transceiver
I com IC-M304 VHF Marine Transceiver
Brand: Icom
Product Code: IC M304
Download Specification: Download Catalogue
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.
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)
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
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 4Ω load
Design by : Xantatech