Is there a low power transponder for flying >15,000 ft?
In post #79, Spin Buster quotes the CAA as replying to one of Martin Breen’s questions (about whether a low power transponder is available) as follows-
4. There are a number of transponders on the market which produce a peak pulse power of 70W and appear to be suitable for use in many types of glider.
But do they give an adequate signal above 15,000 ft? Gliders can easily exceed that height in wave at a number of UK sites.
The manual for the Funkwerk Avionics (formerly Filser) TRT800 (150W maximum output transponder; 18.5 dBW (71 watts) peak power at the antenna) gives its maximum flight level as ‘15000 ft.’