Is NavPak compatible with my GPS and other instruments?
Probably. The only requirement is that it has an output port to connect to a computer and it sends or receives NMEA data. The User’s Manual will state if the input and output is NMEA format and it should tell you what NMEA sentences it sends or receives. Almost all GPS units and other electronic navigation instruments are NMEA compatible. The only exceptions are stand alone units without an output port and units made for special purposes that may use a proprietary communication protocol.