Raymarine Ray53 Compact VHF Radio w/GPS [E70524]Ray53 Compact VHF Radio with GPS Raymarines Ray53 radio is small in size but big on features and performance. Ray53 is a full function VHF marine radio with Class D Digital Selective Calling (DSC) and a built in GPS receiver. Simply program your boats MMSI number into the Ray53 and immediately benefit from the enhanced calling and safety features of DSC. The Ray53 supports both NMEA2000 and legacy NMEA0183 networking which enables it to connect with