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Anyone still have a Garmin 740s...

Andruet
Guest Contributor

Anyone still have a Garmin 740s Chartplotter? YES, it's an old one (vintage 2012?). I "inherited " came with my "new-to-me" Sea Ray. Can't figure out what it needs to pick up satellites. It is connected to a GPS antenna and I've got the latest software update. I have the User Manual but it doesn't tell me what I need to know. 

Is there a Garmin SD Card I need to get as well?

What am I missing?

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