Practical Sailor has selected the Icom COMMANDMICIII as a 2009 Editor's Choice product. IPX8 Submersible PLUS (1.5m depth for 30 minutes) The IC-M504 withstands submersion in up to 1.5m depth of water for 30 minutes. It is equivalent to the IPX8 standard. All products are rigorously checked to pass the quality test at the factory.
ICOM IC-M504 Marine VHF Radio has Large LCD with dot-matrix characters The IC-M504 has a 168-charactor, full-dot matrix display that allows you to easily view a variety of information, such as GPS data, DSC emergency data, etc. The large buttons and knobs provide user friendly operation.
ICOM IC-M504 Marine VHF Radio is ITU Class D DSC The IC-M504 has built-in class D DSC, which enables you to constantly monitor channel 70. This functionality provides users at sea with the peace of mind that they can call for help by pressing the ¨Distress¨ button if the need arises.
ICOM IC-M504 Marine VHF Radio features Position Request and Position Report Over and above the DSC, your own and other ships¨ position data can be exchanged with the position request or position report functions. The received position information can be transferred to external navigation equipment*. In addition, the polling (request/ reply) function checks whether a specific ship is within the communications range. * External GPS receiver and navigation equipments which accept NMEA 0183 format are required.
ICOM IC-M504 Marine VHF Radio Has Superior receiver performance The IC-M504 has excellent receive specifications of 80dB (typical) for intermodulation rejection, adjacent channel selectivity, and 0.22æV (typical) high sensitivity. The IC-M504¨s superior receiver provides excellent resistance to intermodulation and allows you to catch a weak signal between strong stations.
ICOM IC-M504 Marine VHF Radio Provides Excellent audio output power The extra large speaker is mounted into a well spaced housing, producing greater sound than the specified 4.5W output power. You can get clear and loud reception without requiring repetition of the message, even over the engine or other background noise.
25W hailer/RX speaker and auto foghorn When connected to a hailer horn or external speaker on the deck or tower, you can make an announcement on-board from the microphone. The RX speaker function, ¨receiver-repeater¨, allows you to monitor the received audio. Four foghorn patterns are also available for the automatic foghorn.
Rear panel microphone version* With this version, the microphone connector is drawn from the rear panel and a 6.1m (20ft) microphone extension cable is supplied to allow you clean and neat panel installation. * Ask your dealer for details
Other ICOM IC-M504 Marine VHF Radio Features
Dual/tri-watch function for monitoring Ch.16 and/or call channel
Instant access to Ch. 16 and call channel
7 levels adjustable backlit display and keypad
Convenient ¨TAG¨ scanning function with simple add/delete
Optional Voice Scrambler, UT-112 for private communication
Weather channels with weather alert function
Black or gray color versions
General ICOM IC-M504 Marine VHF Radio Specifications
Frequency range Tx Rx
156.025 - 157.425MHz 156.050 - 163.275MHz
Type of emission
16K0G3E, 16K0G2B
Usable channels
USA, INT, CAN, WX channels
Power supply requirement
13.8V DC ñ15%
Current drain (at 13.8V DC) Transmit Receive
5.5A (25W output) 1.5A (Max. AF)
Operating temperature range
¨20øC to +60øC;
¨4øF to +140øF
Antenna impedance
50Ω (SO-239)
Dimensions (W?H?D) (projections not included)
165 ? 110 ? 123.2 mm 61⁄2?411⁄32?427⁄32 in.
Weight (approx.)
1.45kg; 3.20 lb
NMEA formats Input Output
RMC, CGA, GNS, GLL DSC, DSE
ICOM IC-M504 Marine VHF Radio Transmitter
Output power
25W or 1W (at 13.8V DC)
Modulation system
Variable reactance
Max. freq. deviation
ñ 5.0kHz
Frequency error
ñ 10.0ppm
Spurious emissions
Less than -70dBc (at 25W)
Residual modulation
More than 40dB
Adjacent channel power
More than 70dB
ICOM IC-M504 Marine VHF Radio Receiver
Intermediate freq. 1st
2nd
21.7MHz 31.05MHz (Ch 70) 450KHz
Sensitivity
0.22æV typical (at 12db SINAD)
Squelch sensitivity
0.32æV 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.
Optional fully integrated COMMANDMICΙΙΙ¨
Full control 2nd station capability The COMMANDMICΙΙΙ is a remote control for the IC-M504 that may be positioned up to 18.3m (60ft) away from the IC-M504. All M504 functions, including distress call, DSC, and foghorn, are available. The COMMANDMICΙΙΙ may also be used as an intercom with the IC-M504.
Multi function "Jog" dial A newly designed multi function Jog dial gives you quick and easy access to many M504 settings, including operating channel, volume, squelch, menu settings and more.
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ICOM IC-M504 Marine VHF Radio has Large LCD with dot-matrix characters
