STANDARD HORIZON GX1400 WHITESTANDARD HORIZON GX1400 WHITE (DISCONTINUED) 1400 Fixed Mount VHF White ITU R M493 13 Class D Digital Selective Calling The GX1400 Eclipse Series is an ITU R M493 13 Class D class VHF with a separate Channel 70 receiver, which allows DSC calls to be received even when listening to communications. The DSC DISTRESS function when activated transmits a digital MAYDAY including vessel identification, Latitude Longitude and time (with GPS connected), to