Thanks for the link - don't think I saw that thread. Mine started off the same - displaying the coordinates that I could punch into my Garmin. When I looked at interfacing directly to the Garmin, I chickened out and decided to add a GPS module to the ground station instead. No map, but direction and distance should suffice nicely.
Originally Posted by mikec
I also added a digital compass module (HMC6352 iirc) for the local heading. After calibration, the digital compass heading lines up nicely with my handheld compass.