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I have a Raytheon 6000 autopilot (Not ST). Can I connect an NMEA input
such as wind or GPS to the autopilot.

You can connect the NMEA only if you us the old NMEA interface sold as an
option with the AHxxxx model pilots. These (are) were difficult to find and
presented some problems in reading the NMEA sentence.

The windvanes use with the AHxxxx unit plug into a socket on the bottom of
the unit. Wind direction from the NMEA sentence won't be recognized by the
non ST AP.

Sorry I don't have more encouraging information for you.

Steve
s/v Good Intentions