Easy DSC installation! The Gx1400G makes DSC easy. With an internal 66 channel GPS built into the front panel, there is no need to connect the radio with a GPS for Dsc. Ready to use, DSC calls, position sharing, waypoint navigation, navigation to DSC emergency calls can all be done with just a few simple steps. 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 that allows DSC calls to be received even when listening to communications. The DSC distress function transmits a digital Mayday when activated, including ship identification, latitude/longitude and time to facilitate a quick response. Additional calls that can be made are individual, urgency, security, position report, and sending. The high-resolution dot matrix display makes navigating the radios with many functions smooth and easy. Now with a new brighter backlight for better contrast The easy-to-use E2O menu system is now more intuitive than ever. Access all menu functions and settings in just a few simple steps. DSC calls and DSC programming has never been easier.