[TG] Raymarine Autohelm DGPS ST50 receiver stuck

[Tom - Raymarine - Moderator]

Hi Neil,

I've never come across a GPS that transmitted a static position; the only time I've ever come across that symptom, it's been a data loop (usually involving NMEA0183) where two devices are sending the same data back to each other and one of them is outputting that onto Seatalk.

If you connect just the ST50 display and GPS together and still see the same position data then the implication is that it's only coming from the GPS, but I have no experience with that GPS (it was already long-since retired when I started with the company 19 years ago...) and can't give you any hints about it. If it's the GPS, it's a replacement job. My money would still be on a loop though.

Regards,
Tom