Anyone still have a Garmin 740s Chartplotter? I "inherited " mine 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 uploaded 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?
