Trig TT21 / TT22 Remote Mode-S Transponder Connection Manual


Attached is the manual for connecting the Trig Remote Mode-S Transponder to the MGL Avionics Odyssey/Voyager and iEFIS systems.

This solution provides a simple-to-use interface for a Trig Avionics TT21 or TT22 transponder. MGL Avionics have an interface that simply plugs into the rear of the transponder and typically only 4 wires have to be connected:

2 x CAN bus wires, power and ground. An optional suppression line is also provided should that be needed.

Please note that this interface does not work with the similar looking Dynon transponder. It is designed to be operated with the Trig transponder.