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Garmin GPSMAP 540s - Marine GPS Receiver Support Questions

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Flashing Question Mark
There is a constant flashing question mark appearing on the boat symbol. What does that mean?

Fish Finder
I have sent this unit back and they sent me a new one? but still cant get ubit to locate fish, it is...

Data Bar Information
how do I change data bar information on 540s

Flashing Depth Indicator
The debth indicator on my GPS/500 series flashes a debt that is not accurate. It appears to be stuck...

Flashing Question Mark
Hello oillawWhen the GPS Unit looses satelite signal, the green bar dissapears and the position icon...

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