Ramy wrote:
Derek, I am not advocating mode S transponder (which I couldn't efford
one either ), it is doing nothing to improve safety then mode C,which
should cost around 2K in the US, no more then a flight computer.

Double that figure, and you'll have a more typical installed cost in the
US, particularly in a type certified glider. A transponder installation
is a different kettle of fish from a glide computer, a 337 is often
required...