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Electronic Flight Instrumentation for Experimental Aircraft Since 1991

Trig Transponder for HXr

Wyoming, MI (2/14/2013) – GRT Avionics is pleased to announce the remote interface capability of their HXr electronic flight information system with the Trig TT22 1090ES Mode S transponder and its Class 2 counterpart, the TT21. The Trig units can be remotely mounted and controlled through either one or two  HXr display units, creating a clean instrument panel design by eliminating the need for a separate transponder control face.


The TSO-certified Trig TT22 transponder complies with the ADS-B Out “2020” rule when coupled with an appropriate GPS. GRT EFIS systems support a variety of ADS-B receivers, such as the Radenna SkyRadar and Freeflight XPLORER, to complete the full ADS-B package.  


The GRT TT21/TT22 Equipment Supplement is now available for information on installation, wiring, programming, and using the Trig transponder with the HXr system. Aircraft owners may purchase the TT22 from GRT Avionics as part of the HXr EFIS system. For more information on GRT systems and to download the GRT/Trig Equipment Supplement, please visit www.grtavionics.com.


GRT Avionics and its partner company, Grand Rapids Technologies, has been an industry leader in electronic flight instrumentation systems for experimental and light sport aircraft for over 20 years. Please visit www.grtavionics.com for more information.