White GX1500S fixed mount submersible VHF marine transceiver with class D DSC distress call with NMEA GPS position input, oversized alphanumeric display and rotary knob, loud speaker audio (can be heard in noisy environments), 25/1 watts, DSC position polling when connected to GPS chartplotter, connection for RAM+ for VH-310 second station remote mics, programmable scanning, dual watch, priority scan and NOAA weather and alert, customizable channel names, die-cast chassis, repeat GPS information on the display, noise canceling microphone with 16/9 and channel selection keys.