Shari posted a discussion
ST60 Tridata
Why does my speed show some super large number, like 632 kts, when I'm actually going about 15 kts. My Rl70c shows the correct speed. I have seatalk & output wires for Tridata & RL70c are landed under same screws. Also what's interesting is when I go into the "calibration" mode on the ST60 & toggle between different screens, it shows the correct speed! It doesn't matter if we are under power or just slow idle, the speed reading on Tridata is always some 600 number. This is really driving me nuts!!