Marconi IFR Aeroflex ATC-1400A – A European Workhorse for Transponder and DME Testing

Marconi IFR Aeroflex ATC-1400A – A European Workhorse for Transponder and DME Testing

Across Europe, many avionics maintenance organisations are working under tight regulatory and budget pressure while still supporting mixed fleets that range from modern Mode S airliners to legacy Mode A/C general aviation aircraft. In that environment, a dependable bench test set often matters more than the latest touchscreen platform. One instrument that still turns up in a lot of European avionics bays is the Marconi IFR Aeroflex ATC-1400A.

Built for Real Avionics Shops

The ATC-1400A was designed as a dedicated transponder and DME test set that drops naturally into 220 V European workshops. It focuses on the L-band channels used for ATC surveillance and distance measuring, rather than trying to be a general-purpose RF box. Technicians can select interrogation modes, set RF level in 1 dB steps and apply range or velocity profiles for DME checks, all from a front panel laid out for day-to-day line and bench work.

In transponder tests, the ATC-1400A generates interrogations in the standard bands, measures reply power and frequency, and decodes Mode A/C codes so you can confirm that the aircraft is reporting the correct identity and altitude. For DME, it provides range, acceleration and velocity simulation, allowing engineers to exercise airborne receivers over realistic profiles without leaving the hangar.

Why a Refurbished ATC-1400A Still Makes Sense

Because the ATC-1400A is a mature and well-understood platform, the practical route today is to source refurbished units that have been properly checked and calibrated. For European customers, that usually means looking for 220 V versions, current calibration certificates and a supplier that understands avionics as well as cross-border logistics. When those boxes are ticked, an ATC-1400A can continue to support scheduled maintenance and modification programmes for many years.

If you operate a European MRO, independent avionics shop or CAMO organisation and need to maintain transponder and DME capability without committing to a brand-new test platform, a refurbished ATC-1400A is still a very rational choice. You keep the workflow your team already knows, retain existing procedures and documentation, and avoid the cost and disruption of qualifying an entirely new system.

Available Now from Testwall – EUR 14,500 with Fresh Calibration

We currently have a Marconi IFR Aeroflex ATC-1400A available at EUR 14,500, supplied refurbished and delivered with a fresh calibration certificate from an accredited laboratory. For photos, full specifications and current availability, visit the product page:

View the Marconi IFR Aeroflex ATC-1400A Transponder/DME Test Set on Testwall