Intercom function
NMEA output to link a PC or a chartplotter
The large LCD display readable by far, a wireless handset with LCD display and all the command buttons working over 200 m from the VHF.
Only one antenna for the VHF transmission and the AIS system.
AIS signal receipt on the VHF is available on the NMEA output to be displayed on a PC or a chartplotter: positioning of the nearby ships and set of information:  
MMSI, name, route, characteristics, speed, etc...
Intercom function providing a private communication
network onboard as far as 200 m   from the board.
Protection against interferences.

The DSC system allows sending a distress signal, including an identification message on a 30 to 50 nm range, to all ships equipped with a DSC VHF (this equipment is compulsory on large ships, with permanent watch).

All the useful information for rescue coordination, like ship identification & position are included in this message that is au tomatically transmitted from ship to ship until it is finally received by a rescue center.

Aside from this rescue function, the RT-650 DSC performs traditional communication functions with other ships.
The radio can support DSC (Digital Selective Calling) operation with specially designed
DSC unit, which meets the standard of  ITU-R, M493-9.
When connected to a GPS, it will display the position (longitude and latitude) of the vessel.

Other features of the radio includes:
> Access to 55 Maritime VHF channels;
> Quick selection of the emergency call on CH16;
> Provides 20 users programmable names with MMSI;
> Allows 10 memory channels for quick recall and memory scan;
> Handset with channel up and down and channel 16;
> Only one VHF antenna is needed;
> Outstanding performance of waterproof complying with Japanese Industry Standard;

ETSI - European Telecommunications Standard Institute - has stipulated the specific requirements EN 301 025-1/2/3 for marine radio with class D DSC feature for use on non-SOLAS vessels.

Specifications:

Frequency Range:
TX: 156,050-157,425 MHz.
RX:156,025-162,025 MHz.

Output Power (TX):     25 W /1W
Antenna impedance:  50 oM
Power supply:              13.8 V DC
Dimensions:                  72 x 167 x 157 mm
Weight:                           1,2 kg