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Trig TT21 Class 2 Mode S Transponder

Our Price $2395.00

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The TT21 system is our smallest, lightest, Mode S general aviation transponder. This two part system, which includes an integrated altitude encoder, can fit into the smallest of aircraft – and yet it is fully certified and compliant with all the transponder requirements.

With a front panel controller smaller than a standard instrument, and a remote transponder that is not much bigger than a pack of cards, the TT21 can fit into the smallest of aircraft – and yet it is fully certified and compliant with all the transponder requirements.

Low Weight - less than 500 grams!
Minimal Panel Space
Low Power Consumption
130 Watts Nominal Output
Integrated Altitude Encoder
Simple Installation
Support for 1090ES ADS-B Out

The TT21 can be mounted in a standard 57 mm (2¼ inch) instrument hole, or where space is really tight, in a compact mounting just 42 mm high. The TT21 is now fully ETSO approved for fitting to European registered aircraft.

FREE wiring harness and programming on request*

* Terms and conditions apply