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Gxm 54 Weather Antenna Satellite weather/radio antenna with SiriusXM coverage offers detailed weather information straight to your compatible Garmin chartplotter. Youll gain the most current weather conditions and forecasts including NEXRAD lightning wind and wave information. Youll also enjoy more than 150 channels of SiriusXM satellite radio. Plus you can add Fish Mapping to find suggested potential hot spots for popular species including mahi marlin swordfish wahoo and yellowfin based on sea conditions. Display sea surface temperature contours surface temperature front strength and 30-meter subsurface temperature contours and monitor plankton data such as concentration contours and plankton front strength. Includes pole mt. surface mt. and 6m cable. 3.61Dia. x 1.95″H 9-32Vdc.