LTR 400 Transponder and CADU

Identify friends, prevent fratricide


  • Air Platforms: Helicopter, Aircraft, UAVs, Fighter Aircraft 
  • Naval Platforms:  Submarines,  Dock landing ships, small frigates, OPVs, etc


With latest state-of-the-art of technology IFF Mode 5 standard, LTR 400 is a Lightweight Transponder which can be used without restrictions for both civilian air traffic control and military applications to identify friendly units on land, at sea and at air.

LTR 400 Transponder can be either controlled and monitored by the CADU (Control And Display Unit) or integrated in a compliant avionics system using cockpit multi-function displays for control. As part of the IFF and Mode S on-board system, CADU can be fitted in the cockpit area of the aircraft or in a Naval Cabinet System.  


  • Mode 1, 2, 3/A, C, 4, 5 L1+L2, S Enhanced, ADS-B
  • Extended Squitter
  • Compatible with Mode 4/5 crypto computers QRTK-3BNG, KIV77, SIT2010 and NSM
  • Full dual channel diversity operation
  • MIDS compatible
  • TCAS II capability

Main Benefits

  • Light weight
  • Easy to ingrate into platforms, designed with a flexible and simplified logistic concept, offering standards interfaces (RS-485, ARINC 572 and MIL-STD-1553B).
  • Optimized for operational use at day and night, CADU provides anytime a full control and indicator functions display capability of LTR 400 transponder for civil and military applications.
  • Certified interoperability in accordance with ICAO Annex 10 Volume IV, STANAG 4193 Part I-VI, Edition 3  and DoD AIMS 03-1000B Amdt 1 
  • Certified airworthiness with the EASA European Aviation Safety Agency (equivalent to the FAA)

Product Impressions

Product Impressions

Product Impressions






We provide target-group-oriented standard training courses for operators, maintainers/technicians and administrators, that can also be customized to your specific needs for this product.

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