The TT22 doesn't cost that much more than the TT21. I have a '22 in my
glider and am very happy with it.


"Jim" wrote in message
...
On Wednesday, September 5, 2012 5:27:09 PM UTC-4, K wrote:
On Sunday, September 2, 2012 8:22:36 PM UTC-6, Dave Springford wrote:

Trig TT21 $2050







New in box







The TT21 system is the smallest, lightest, Mode S general aviation
transponder. This two part system, includes an integrated altitude
encoder.



A small control unit mounts in a 57 mm hole in the panel and the rest
of the unit can be mounted anywhere.







contact dave at foxonecorp.com



I am interested in buying this and I am wondering, With this unit being a
Class 2 transponder, What happens above 15,000 feet? I fly in places
where the good days occasionally allow for climbs and some cruising above
this. Thanks

Over 15000 you would want the Trig22. The Trig21 is only certified to 15K.
Of course, who would know?