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Garmin gpsmap 521s and 421s fishermen should change this settings | Garmin gpsmap 521s settings - YouTube
![I have Garmin 520s chartplotter which is connected to sonar on the boat. I am looking to buy Garmin 200 VHF but I am not I have Garmin 520s chartplotter which is connected to sonar on the boat. I am looking to buy Garmin 200 VHF but I am not](https://ww2.justanswer.com/uploads/OriginalSeadog/2011-03-26_151053_gpsmap_400-500_series_rear_panel.jpg)
I have Garmin 520s chartplotter which is connected to sonar on the boat. I am looking to buy Garmin 200 VHF but I am not
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Garmin gpsmap 521s and 421s fish finder mode | Garmin | marine fish finder | marine echo sounder - YouTube
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