On 6-Aug-2005, "RST Engineering" wrote:

It would help if you would post the make and model of intercom.

Jim

That would be a Sigtronics SPA-400 STO, mounted in a 1976 PA28-161 Warrior.
The instructor that checked me out in the airplane had a nifty adapter he
said he picked up at Radio Shack that allowed my wife riding in back to plug
in the headphone portion of her headset in a "Y" adapter and so share his
intercom audio jack. It didn't have anything for the microphone plug
though, so she couldn't talk to us, she could just listen in on our
conversation. That very nearly became a problem as she got queasy while I
was flying steep turns, stalls and slow flight and she couldn't tell us.
She made it without tossing her cookies until we landed, and on the
taxi-back to take off again (very short runway) she got my attention and let
me know she needed to get out of the plane, NOW!!!! This concerns me as I
have some friends who have never been in an airplane of any sort and want me
to give them a ride. I am worried if the one who will be riding in back
gets ill I won't know until too late.
Soctt Wilson