On Sunday, December 30, 2018 at 8:12:43 AM UTC-8, wrote:
Planning to install Trig TT-22 transponder with ADSB -out to my experimental glider.
Trig manual saying that TA 70 GPS is a permanently mounted external antenna. Where is recommended place of installation on gliders? Does anyone installed antenna inside glider fuselage?

p.

Why are you installing a TA70 in an experimental glider?

See capabilities of TN72 with a smaller internal antenna and TA70 on this page

http://www.craggyaero.com/transponder.htm

Richard
www.craggyaero.com