On 8 Apr 2006 20:18:37 -0700, "Jay Honeck" wrote:

I'm trying to figure out what's causing it or, at least, how to stop it
on that particular jack. Obviously, the intercom wiring runs adjacent to
the electrical buses on that side of the panel, so I'm not sure what
role the buses may play, especially since I'm using shielded cable.

Well, if it makes you feel any better, the co-pilot's jack in our
Pathfinder has a bit of whine in it, too. None of the other jacks do.

It's not bothersome, and I always figured it was the proximity to the
electrical bus.

Well, I'm sure it would be contrary to the regs to solder a 0.1
microfarad capacitor across the earphone terminals on the right-seat
headset jack. It's even a bad idea to try it with some alligator
clips first to see if it works.

Don