GARMIN GA38 GPS GLONASS for GPSMAP Anteena

Built to take advantage of the GLONASS system/constellation of satellites as well as standard GPS, this robust external antenna is packaged in a low-profile waterproof housing and provides 3 easy mounting solutions: pole, surface or under-deck (for the underside of fiberglass decks). External GPS/GLONASS antennas provide increased flexibility and installation options as well as the potential for enhanced reception of GPS/GLONASS signal for those products with built-in GPS/GLONASS antennas. Whats in the Box: - GA 38 - Surface mounting bracket - Pole mounting bracket - Under-deck mounting bracket - Mounting hardware - Antenna cable (32 ft/10 m) - Installation instructions Compatible Devices: AIS 600 Blackbox Transceiver GPS 152 GPS 152H GPS 158 GPSMAP 1020 GPSMAP 1020xs GPSMAP 420/420s GPSMAP 451s GPSMAP 521 GPSMAP 521s GPSMAP 527 GPSMAP 527xs GPSMAP 551 GPSMAP 551s GPSMAP 556 GPSMAP 556s GPSMAP 720 GPSMAP 721 GPSMAP 721xs GPSMAP 78 GPSMAP 78s GPSMAP 820 GPSMAP 820xs