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Old 08-03-2012
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ST80 Shows No Difference Between True/ Apparent Wind

Are your other instruments Raymarine? Usually Raymarine instruments are daisy chained together using their seatalk connectors. They also have transducer connectors on the back of the units. For the wind speed unit to be functioning properly the seatalk must be connected and the other instruments (particularly the knot meter) talking with each other. However, with your issue starting when the mast was pulled, it seems most likely that the problem originated at the connection point for the mast wiring.

How about the functions of the wind speed meter? You getting wind direction readings? Your knot meter paddle wheel clean and functioning? If your knot meter is other than a Raymarine, maybe they aren't communicating properly via nmea 0183. Some things to consider.
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