Michael 182 wrote:
"G.R. Patterson III" wrote in message
...


Michael 182 wrote:

All right, I did some Google searching (sorry - I should have started

there)

and now suspect that my problem is in the grounding. But where in the
system? Can I fix this, or is it back to the avionics shop?

One thing you can do yourself is to isolate the jacks. Buy special fiber

washers

that have a double-thickness cylinder in the center. Remove each jack from

the

panel, re-drill or ream the hole in the panel to fit the center section of

the

isolation washer, and re-install the jack with a plain fiber washer in the

front.

The two fiber washers keep any metal parts of the jack from touching the

airframe,

so the only way the jack is grounded is the ground wire to the intercom.


Hate to be dense (not that I have a choice) but does the "double-thickness
cylinder in the center" mean something like a grommet?

Something like this?

http://www.marcorubber.com/grommets_commercial.htm

Thanks,

Michael




George Patterson
Love, n.: A form of temporary insanity afflicting the young. It is

curable

either by marriage or by removal of the afflicted from the

circumstances

under which he incurred the condition. It is sometimes fatal, but

more

often to the physician than to the patient.




They are called "shoulder washers", usally made of fiber or nylon.

Tom Pappano, PP-ASEL-IA