VHF marine radio with Class D Digital Selective Calling (DSC) and internal GPS receiver. Simply program your boat's MMSI number into the Ray53 and immediately benefit from the enhanced calling and safety features of DSC. Compact marine VHF with Digital Selective CallingBuilt-in GPS/GNSS receiver with a connection point for an optional external antennaNMEA2000 and NMEA0183 networking for integration with onboard systemsAudio output connection for optional passive remote speakerSurface and trunnion mount kits includedStyled to compliment the Axiom family of chartplotter displays