Black version IPX8 Submersible PLUS (1.5m depth for 30 minutes) Gray version The IC-M504A 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. Large LCD with dot-matrix characters The IC-M504A has a 168-character, 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. ▲ 37×73mm (1.46×2.87 in) size full dot-matrix display

ITU Class D DSC The IC-M504A has two receivers, one for the radio and one to monitor channel 70 for DSC all the time. When a distress call is received, an escalating alarm sounds and the transceiver automatically switches to channel 16. The auto switch and auto tune timer functions allow you to control the timing to switch. Compliant to new DSC class D regulations. 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...

: 25W or 1W (at 13.8V DC) : Variable reactance : ±5.0kHz : ±10ppm : Less than –70dBc (at 25W) : More than 40dB : More than 70dB 21.7MHz 31.05MHz (Ch70) 2nd 450kHz • Sensitivity : 0.22μV typ. (at 12dB SINAD) • Squelch sensitivity : Less than 0.32μV (threshold) • Adjacent Ch. selectivity : 80dB typ. (DSC 75dB typ.) • Spurious response : 80dB typ. (DSC 75dB typ.) • Intermodulation : 80dB typ. (DSC 75dB typ.) • Hum and noise : More than 40dB • Audio output power : 4.5W typ. at 10% distor- Measurements made in accordance with TIA/EIA 603. All stated specifications are subject to change without notice...