Join Date: Mar 2006
Location: New England
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You can do this pretty simply... Garmin does have a wiring oddity though*.
The reason you won't be able to see the other locations is not that they speak different languages, but that the 76 GPSMap DOES NOT SUPPORT DSC call location input.
You will need to connect the GPS's NMEA OUT + to the VHF"s NMEA IN +, and then you will need to connect the VHF's NMEA IN - to the GPS's 12 VDC ground, as Garmin uses the 12 VDC Ground as their signal ground*.
You will also have to set the Garmin GPSMap 76 serial port to NMEA protocol, instead of the default Garmin protocol. You'll want to set it to 9600 baud, 8, N, 1.
I'd add that you should probably connect the 12 VDC to the Garmin's 12 VDC wire, so that you aren't relying on the Garmin's AA batteries.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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