![HQRP GPS Antenna for Garmin GPSMAP 521, 521s, 526, 526s, 531, 531s, 536, 536s, 541, 541s, 545S, 546, 546s, 550S, 555S, 720, 720s Navigator + HQRP Sun Meter : Amazon.ca: Electronics HQRP GPS Antenna for Garmin GPSMAP 521, 521s, 526, 526s, 531, 531s, 536, 536s, 541, 541s, 545S, 546, 546s, 550S, 555S, 720, 720s Navigator + HQRP Sun Meter : Amazon.ca: Electronics](https://m.media-amazon.com/images/I/71opb7EBbiL.jpg)
HQRP GPS Antenna for Garmin GPSMAP 521, 521s, 526, 526s, 531, 531s, 536, 536s, 541, 541s, 545S, 546, 546s, 550S, 555S, 720, 720s Navigator + HQRP Sun Meter : Amazon.ca: Electronics
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Configuring the Communication Settings in the Garmin GPSMap 421S and GPSMap 521S with GPS City - YouTube
![Garmin GPSMAP 521S GPS chartplotter with 5" display and satellite-enhanced worldwide basemap at Crutchfield Garmin GPSMAP 521S GPS chartplotter with 5" display and satellite-enhanced worldwide basemap at Crutchfield](https://images.crutchfieldonline.com/ImageHandler/trim/750/457/products/2013/34/150/g150521S-B.jpg)
Garmin GPSMAP 521S GPS chartplotter with 5" display and satellite-enhanced worldwide basemap at Crutchfield
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