Hi Jim,

I don't think so. But for only $300 extra it may make sense to go to the
high-power version if you plan to fly higher than 15K often.

Best Regards,

Paul Remde

"JS" wrote in message
...
Which begs a question:
Do Mode S transponders let ATC know what altitude they are certified
to?
Jim

On Mar 5, 10:44 am, "Paul Remde" wrote:
It will be interesting to
see how many glider pilots will pay the additional $300 to get a unit
legal
for use up to 35,000 ft.