Garmin Introduces GDM 4500 and GDM 450R Remote-Mount DME Radios. Now Compatible with TXi Flight Displays — Shipping Q3 2025 Garmin has launched two advanced Distance Measuring Equipment (DME) systems — the GDM 4500 and GDM 450R — bringing high-accuracy, remote-mount DME capabilities to a broad range of aircraft, including […]