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Originally Posted by EngNate Seatalk is compatible with NMEA serial devices, with one distinction: Seatalk is bi-directional - it sends and recieves data on one wire. You can connect either Tx or Rx data to/from an NMEA device directly - Data Rx or Tx to Yellow. |
Seatalk is a RayMarine proprietary protocol used between SeaTalk devices. It is not compatible with NMEA. You cannot simply connect them together. The SeaTalk data must be converted to the NMEA protocol before connecting to the NMEA device. There are devices available that will do the conversion known as a SeaTalk-NMEA bridge.
Eric