I added a new Garmin to my 3700 over the winter and back it up with navionics on an ipad...your ipad has to be cellular, I think, for it to have a GPS chip but the cellular does not have to be the current. Right now, I'm just propping the ipad up somewhere on the dash but looking at some ram mounts to make it more permanent.
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Mike O Cincinnati OH
(77 checkmate Jetboat)(85 Skeeter w/150blackmax)
(89 Bayliner 2455)(95 Bayliner 2855)
2000 Maxum 3700 scr
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