Furuno FM4800 VHF Radio w/AIS, GPS Loudhailer [FM4800]FM4800 VHF Radio with AIS, GPS & Loudhailer Marine VHF Radiotelephone with Class D DSC, GPS Receiver, AIS Receiver and Simplified Loud Hailer The FM4800 is a marine VHF radiotelephone with built in Class D DSC, GPS Receiver, AIS Receiver, and Simplified Loud Hailer with intercom. Its compact housing enables it to be installed in a variety of craft, even vessels where space is limited, such as center console boats. The unit can be mounted on its