Seatalk
Hey Mike,Your friend is right; the older Autohelm equipment did use Seatalk and was not compatible with NMEA equipment. Why not take a look at the Raymarine series. That would solve the integration problems, as you would only be dealing with one brand. I installed a Raymarine C80 last year, and I am very happy with it. And if you have other equipment that use NMEA, the C80 does have NMEA output and input ports.