What is the difference between GTN 750 and 725?
The GTN 725 is essentially a GTN 750 without the built-in VHF nav and com radios that most of the Garmin GTNs have. Features of the Garmin GTN 750 from Pacific Coast Avionics: WAAS-corrected GPS Signal Accuracy to 1 M RMS. GPS TSO’d to C146c, Authorized for Class 1,2,3 (LPV) GPS WAAS-certified to Gamma-3 Approach Capability. Flight Control System Interface for Select Autopilots.The GTN 725 is essentially a GTN 750 without the built-in VHF nav and com radios that most of the Garmin GTNs have.