Question about Eagle Intellimap 640c Marine GPS GPS Receiver
Start up normal, when on auto depth range and sensitivity gives me a normal picture as I move from shallow to deeper water. Once over 50 to 80 feet of water the unit flashes the last depth and changes to 0 - 5 ft range and shows no top or bottom. Once back to shallow water comes back into the proper range. Temp and all Radar functions work normal.
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Posted on Jan 02, 2017
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