On Saturday, December 28, 2019 at 3:34:09 PM UTC-8, Darryl Ramm wrote:
Any aircraft can be expected to have the transponder antenna stuck amongst equipment in the instrument panel? What RF shielding requirements/standards do you think typical glider cockpit avionics, including all the non-regulated, non-certified devices are built against.

In typical ras fashion somebody asking a reasonable question
has degenerated to nonsense. There are perfectly good documents from glider manufacturers that recommend where/how to install transponder antennas. None describe stuffing it in the instrument panel.

I didn't say IN the panel, but near it. I once had a transponder antenna in a DG-400 that was mounted just below my right knee. Everything in the panel worked fine. There is, at times, good reasons for putting the antenna in the nose. You can always do a compatibility test on your own with a temporary antenna mount, or just hand-hold the antenna and move it around near the panel.

Tom