[TG] [TG11] Garmin VHF 315 GPS connection to SeaTalK1

[Tom - Raymarine - Moderator]

Hello Hilliard,

NMEA0183 and Seatalk1 are very different networks and completely incompatible, don't attempt to splice them together: it definitely won't work. You need a Seatalk1 to SeatalkNG convertor, part E22158 (SeatalkNG is NMEA2000 with Raymarine connectors) plus a Devicenet-STNG adaptor cable, part A06075.

If you already have an NMEA2000 network then you you can connect the ST1-STNG convertor into this, but make sure that you connect it via a (spliced) backbone cable (via one of our blue connectors), have only a single point of power supply for combined network, and have exactly two backbone terminators (the blue blanking plugs supplied with the convertor are terminators.)

The point of joining via a backbone cable is to make sure that there are only 2 terminators in the network without leaving empty sockets in either network with exposed 12V pins and open to condensation and corrosion.

Regards,
Tom