Trade-A-Plane - Garmin 500 Suite available from Dawson Aircraft Inc. Garmin G500 (GDU 620), Garmin GDC 74A Digital Air Data Computer, Garmin GAD 43e, GMU-44 MAGNETOMETER, Garmin GDL 69A XM Weather Interface /
GMU 22 Magnetometer | Garmin
Sensors - Carl & Rafael's RV 14A Builders Site
GARMIN GMU44 011-00870-00 tri-axial magnetometer on 100outlets.com