Hi,

Trig has announced the new TT22 transponder. It is identical to the TT21,
except that it is a Class 1 transponder with 250W output. That means it is
certified for use up to 35,000 feet.

Details: http://www.cumulus-soaring.com/trig.htm

The TT21 has been extremely popular.

I imagine that most glider pilots will use the TT21 because it uses less
power. It is rated for use up to 15,000 feet, but works up to 35,000 feet.

Best Regards,

Paul Remde
Cumulus Soaring, Inc.