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IC-M504A

VHF Marine Transceiver

specifications

Specifications

General
Frequency range
  Tx
  Rx
 
156.025 - 157.425 MHz 
156.050 - 163.275 MHz
Type of emission 16K0G3E, 16K0G2B
Usable channels USA, INT, CAN, WX channels
Power supply requirement 13.8V DC ±15%
Current drain (at 13.8V DC)
  Transmit
  Receive
 
5.5A (25W output)
1.5A (Max. AF)
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)
165 × 110 × 123.2 mm
612×41132×42732 in.
Weight (approx.) 1.45kg; 3.20 lb
NMEA formats
  Input
  Output
 
RMC, GGA, GNS, GLL
DSC, DSE
Transmitter
Output power 25W or 1W (at 13.8V DC)
Modulation system Variable reactance
Max. freq. deviation ± 5.0 kHz
Frequency error ± 10.0ppm
Spurious emissions Less than -70dBc (at 25W)
Residual modulation More than 40dB
Adjacent channel power More than 70dB
Receiver
Intermediate freq.
  1st
 
  2nd
 
21.7 MHz
31.05 MHz (Ch 70)
450 kHz
Sensitivity 0.22µV typical (at 12db SINAD)
Squelch sensitivity 0.32µV typical (threshold)
Adjacent Ch. selectivity 80dB typical (DSC 75dB)
Spurious response 80dB typical (DSC 75dB)
Intermodulation rejection 80dB typical (DSC 75dB)
Hum and noise ratio More than 40dB
Audio output power 4.5W typ. at 10% distortion with a 4Ω load

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

Supplied Acessories

  • Hand Microphone
  • DC Power Cable
  • Spare Fuses
  • Mounting Bracket
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