Cobra MR F77 Fixed Mount Class D VHF Radio With Built-In GPS Receiver (Includes Flush Mount and Fixed Mount Kits), WhiteCobra MR F77 Fixed Mount Class D VHF Radio With Built In GPS Receiver (Includes Flush Mount and Fixed Mount Kits), White The MRF77 is a unique VHF radio with an integrated GPS receiver and exact location for a true life saving device. Instant emergency channel 16 9, Rewind Say Again feature, and access to all NOAA weather channels make this a complete solution. Submersible 25 Watt VHF Noise Canceling Microphone NOAA Weather Channels Rewind Say Again