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Amazon.com: BNC Male to Female RG58 Marine GPS Antenna Extension Cable 1m for Garmin GPSMAP USA Shipping : Electronics
Active external GPS-Antenna 5m with MCX-connection for GARMIN Nüvi 300 / NüVI-310 / NüVI-350 / NÜVI-360 / Nüvi 370 / Nüvi 600 / Nüvi 660 etc.: Amazon.co.uk: Electronics & Photo
HQRP Amplified External GPS Antenna for Gps Models: GPS 76 (010-00244-00) / GPSMap 76CSx (010-00469-00) / GPSMAP 76CS (010-00352-00) / GPSMAP 195 (010-00083-00) Antenna Replacement plus HQRP Sun Meter : Amazon.ca: Electronics