TRIG – TT21 Transponder

The TT21 ia a low power low profile ADS-B out capable transponder with integrated altitude encoder. Requires external GPS source.

Item Description

The head unit will fit the tightest panel space. The RT can be mounted anywhere, but it is recommended that it be placed near the antenna. This is due to the low power output of the TT21 as a Class 2 transponder. The other advantage of the TT21 is that the altitude encoder is built into the head unit, simplifying installation, calibration and future testing requirements.
To make this unit ADS-B capable it must have a certified WAAS GPS source supplied to it from an external unit, such as the Trig TN70 blind GPS.

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