Hi!
I am looking for a cheap mode-s for my ultralight gyro. Any suggestions?
A used Garmin?
Or new TRIG TT21?
I have a Trig TT21. Support by Trig is excellent. The only problem needing support was at installation, misconnection.
BUT: in solo operation any transponder where each digit is chosen separately by rotating a knob means much more time head-down than just pressing a number button, as with larger transponders, including Trig models.
PS I would consider the ADS-B upgrade situation when choosing.
Trigg TT31 for anyone who has a KT76 installed. It’s plug and play.
Otherwise TT 21.
I also would strongly suggest that only ADS-B capable Transponders should be installed these days.
The Trig TT31 is not ADS-B capable when installed in a King tray.
Among ULs, the KTX2 is a classic.
Link
Silvaire wrote:
The Trig TT31 is not ADS-B capable when installed in a King tray.
That depends. The “King tray connector” of a TT31 has one RS232 input. That means that if you have a parallel altitude encoder then you can connect the GPS to that RS232 port and you will get ADS-B out. (We have that precise setup in one of our aircraft.) If you have a serial encoder, then indeed you need a Trig tray with the second connector for the GPS data.
The Q is why would a gyro want a Mode S. Is there any European airspace where a gyro could fly and which requires Mode S?
ADS-B, in or out, is not mandatory anywhere in Europe.
Silvaire wrote:
The Trig TT31 is not ADS-B capable when installed in a King tray.
It worked in my original installation.
Peter wrote:
The Q is why would a gyro want a Mode S. Is there any European airspace where a gyro could fly and which requires Mode S?
Some countries like Germany require mode S for VFR. Sweden does not, but for a new install in a SE-reg it makes sense to take a mode S transponder anyway.
