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FLY WITH PRECISION DISTANCE MEASUREMENT

Designed for Part 23 general aviation aircraft, the GDM 450R remote-mount DME works with select Garmin integrated flight decks and displays to provide slant-range distance calculations relative to DME ground stations.

REMOTE-MOUNT DME RADIO

AUTOMATICALLY TUNES DME CHANNELS, BASED ON SELECTED NAV RADIO FREQUENCY

OPTIONAL FREE SCAN CAPABILITY SEARCHES FOR DME STATIONS WITHIN RANGE1

CAN REFERENCE MULTIPLE STATIONS FOR OPTIONAL DME-DME NAVIGATION1

OFFERS AN ALTERNATIVE NAVIGATION SOURCE TO SATELLITE-BASED GPS

MAXIMIZES RANGE WITH 250 WATTS OF TRANSMIT POWER



THE DME SOLUTION FOR TODAY’S GA AIRCRAFT

GDM 450R DME is a modern digital radio, designed for installation in general aviation aircraft. It’s a remote-mount unit that follows the tuning of associated NAV radio(s).

MULTICHANNEL OPERATION

GDM 450R can allow pilots to tune and track up to two separate DME frequencies. With an optional enablement and compatible avionics, the aircraft’s FMS1 can automatically scan and tune up to three additional DME frequencies.

DME HOLD CAPABILITY

For added navigation flexibility, the DME “hold” function lets you maintain your active DME distance indication when tuning the associated NAV radio to a different frequency. This function is particularly useful for instrument approaches where it becomes necessary to tune the localizer or other approach aid while needing to retain your NAV’s referenced DME information.

DME-DME AREA NAVIGATION (RNAV)

With a compatible flight deck or display, the GDM 450R radio can use the distances from two or more DME ground stations to determine the aircraft’s position. This enables the DME to support RNAV routes, providing an alternative navigation option.

EASY INTERFACING

For seamless installation, GDM 450R integrates directly with compatible Garmin displays — no interface adapter is required. It also supports RS-232 and King Serial interfacing to connect with legacy distance indicators.

COMPLETING THE SYSTEM

In addition to compatible navigation equipment and flight displays in your aircraft, you’ll need an L-band DME antenna (sold separately) to complete your GDM 450R system installation. See your Garmin dealer for recommended antenna options and mounting configurations.

1 Requires a compatible Garmin system; feature availability varies by display.

General

  • Operational temperature range -45° C to +70° C
  • Maximum operating altitude 55,000 ft

Physical

  • Installed height (including rack) 1.35" (34.3 mm)
  • Installed width (including rack) 6.30" (160.0 mm)
  • Installed depth to connector backshell 11.62" (295.1 mm)
  • Weight (unit only) 2.42 lbs (1.1 kg)
  • Weight (with install rack, connector kit, and configuration module) 3.05 lbs (1.4 kg)

Power Specifications

  • 14 V Typical/Tx 0.6 A
  • 14 V Maximum/Tx 0.8 A
  • 28 V Typical/Tx 0.3 A
  • 28 V Maximum/Tx 0.4 A

Performance

  • Minimum sensitivity level -90 dBm
  • Maximum range (line of sight) 300 nautical miles
  • DME channels 5 (with compatible avionics)
  • Nominal Transmit Power 250 watts

Interfaces

  • RS-232, HSDB, King Serial, Audio Out

Certifications

  • TSO-C66c DME/N
  • ETSO-2C66b DME/N Class 1

  • GTR 450R
  • Installation rack
  • Backplate kit
  • Product Information Manual

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Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.