GDM 4500 and GDM450R can replace aging DME solutions and provide modern Garmin features State-of-the-art products offer cost-effective way to upgrade DME capabilities on many aircraft New solutions allow pilots to receive multiple DME stations with compatible avionics OLATHE, Kan., July 16, 2025 /PRNewswire/ -- Garmin (NYSE: GRMN) today announced its new distance measuring equipment (DME) products – the GDM 4500 and GDM 450R. These digital, state-of-the-art, remote-mount DME radios are designed to provide ...