​AT-23 Aircraft DME System Trainer

Model AT-23 Aircraft Distance Measuring Equipment (DME) System Trainer is designed to provide hands-on training on a real and operational equipment approved for aircraft installation. The equipment is mounted on a mobile workstation containing aircraft DME unit with built-in indicator, and DME antenna, and a test set. The trainer includes aircraft quality electrical shielded wiring, cables, connectors, and harness assemblies and DME antenna with coaxial cable connections. The trainer includes a test panel console for bench testing of DME equipment.

Using Model AT-23, Avionics Instructors can effectively teach students on installing, removing, and testing a DME unit. Students also develop proper understanding and the necessary skills to troubleshoot the DME.


Durable, steel frame, Vertical standing panel with sturdy casters
Accessories storage drawers & cabinet
Avionics panel complete with Honeywell DME with built-in Indicator for distance, speed, and time
Built-in DC Power Supply
Simulation of Distance, and Speed

Frequency Control:

A 200 channel parallel frequency control head is built into the panel providing 2 of 5 and slip codes. This simulates a remote control head for DME.


Our Models AT-20, AT-21, AT-22, and AT-23 can be interconnected for enhanced training features covering the integration of various avionics equipment in aircraft cockpit.

Computer Based Training:

Model AT-23 is supplied with CBT covering the relevant topics, at no additional cost.

DME Trainer Specifications:

Deliverables include the following items:
  • Panel-mounted DME KN 64
  • Cables
  • DME antenna
  • Power supply 28V, 10A Test Set for Transponder and DME
  • Test harness assembly
  • Test Set coax cables
  • Test Antenna
  • DME Fault Simulation Panel
  • DME Bench Test panel with current meter, volt meter,and fused input power
  • Computer-based Training (CBT)
  • CBT Admin Module with Database Connectivity

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