Humminbird 407480-1 AS GR50 external GPS antenna/receiver

The Humminbird 50-Channel GPS/WAAS receiver gives you lightning fast position fixes accurate within 2.5 meters. This receiver can be used in lower signal areas (compared to a AS GR16) and still maintain a position fix. It also has a faster Time to First Fix (TTFF). The receiver-Feets dimensions are: 3.25-Inch diameter, 1.5-Inch high and comes with 20 feet of cable. Unit can be surface or pole mounted on standard 1-Inch -14 antenna thread. NMEA 0183 data output. One year warranty.