On Jan 2, 3:15*pm, Dave Nadler wrote:
A handheld transponder would be an extremely bad idea !

Get a TRIG transponder, Mode S.
Put a stub antenna somewhere in the back pointing
down aft of the gear, with ground-plane above and inside.
Use the proper and expensive coax for the antenna;
this is not a radio shack nor shade-tree job.
Really best to get a proper radio shop to do the install.

Can't help you with a 337 but a good radio shop can.

Hope this helps,
Best Regards, Dave "YO electric"

Just kidding on the handheld, YO.!
We are looking at the Trig units for the fleet, and roger on the
proper coax. We have experience within the club in that area. The
issue is an approved electrical system and battery box for the 2-33.

T