IC-M424

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	INT, USA, CAN, WX channels
Type of emission	16K0G3E (FM) 16KOG2B (DSC)
Power supply requirement	13.8V DC ±15%
Current drain (at 13.8V DC) Tx 25W output Rx AF max. (RX SP ON)	5.5A 5A (External speaker)
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)	180 × 82 × 119.9 mm; 7.09 × 3.23 × 4.72 in
Weight (approx.)	14kg; 3.09lb
NMEA in/out formats	RMC, GGA, GNS, GLL, DSC, DSE

Transmitter
Output power (at 13.8V DC)	25W, 1W
Max. frequency deviation	± 5 kHz
Frequency stability	±10ppm (-20°C to +60°C)
Spurious emissions	Less than –70dBc
Residual modulation	More than 40dB
Adjacent channel power	More than 70dB
Audio frequency response	+1dB to –3dB of 6dB octave from 300Hz to 2500Hz

Receiver
Intermediate frequency	1st 21.7MHz, 2nd 450kHz
Sensitivity (at 12dB SINAD)	0.22µV typical
Squelch sensitivity	Less than 0.22µV
Adjacent Channel Selectivity	More than 70dB
Spurious response	More than 70dB
Intermodulation	More than 70dB
Hum and noise ratio	More than 40dB
Audio output power External speaker	(at 10% distortion, 4 ω load) 10W typical

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

Applicable IP Rating
Ingress Protection Standard
Water	IPX7 (Waterproof protection)

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