Originally Posted by
Flying_Anorak
However, not many gliders even have a transponder
A lot of gliders are technically incapable of accommodating or supporting the power requirements of a conventional transponder. Also, would not the slow speed of a glider be filtered out by most TCAS systems?
Whilst traditional transponders might be out the window, something like SkyEcho in the UK is extremely well suited to gliders, especially in areas where they might conflict with conventional aircraft.
https://uavionix.com/products/skyecho/
there's also a CAA rebate available at the moment for them, so it'll cost you the dizzy heights of £250 in the UK for powered GA or for gliders.
https://www.caa.co.uk/General-aviati...cuity-devices/