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Connecting Garmin GPS to Raymarine VHF DSC Radio
This question, or similar, has probably been asked before, but several minutes of Googling failed to provide a definitive answer.
I would like to feed GPS position data via NMEA from my Garmin 60C GPS to a Raymarine RAY54 VHF DSC radio. I have the Garmin data cable, but the Garmin manual specifies Data In/Out wires while the Raymarine manual specifies GPS +/- wires for the NMEA connection.
Am I correct in assuming that the Garmin 60C 'Data Out' wire connects to the VHF radio 'GPS +' wire? Does the 'GPS -' wire from the radio need also to be connected to ground, or can it be left unconnected (both radio and GPS are already both connected to same ground)?
If my assumptions are incorrect, then how should the GPS be connected to the radio?
Thanks,
Patrick
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Cruising the Baltic in 'Merihiisi', a 1979 Westerly Berwick Ketch
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