All the older icoms have that setup with the RCA jacks, I don't know what it 
is but the bolt below it is the grounding hookup.
----- Original Message ----- 
From: "Gery Gaubert" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, July 08, 2009 10:25 AM
Subject: hf interference news


> Thanks to all who answered.  This is a really great list full of great 
> peop=
> le who are willing to help.  Thanks for that first.  A little more info on 
> =
> the grounding issue
> The pool pump is off, all computers and the fridge is off. The ac unit got 
> =
> turned off for a few minutes for the experiment and still static is there. 
> =
> At least on the lower bands.  I have parts of 40 meter band with the 
> stati=
> c and including that and lower seem to be effected.  Now for any one who 
> ma=
> y have this radio or can figure out what I am talking about since they are 
> =
> quite knowledgable.
> On the back of the icom 751A  when I am looking at the front of it, I 
> reach=
> around the right side I found a ground.  It is a bolt with a nut.  To my 
> s=
> urprise right above this I found 3 sets of jacks that feel like they are 
> rc=
> a plugs.  There are 6 total but it looks as if the middle 2 are in use. 
> Th=
> ere is a wire with an rca plug on each end that goes from 1 jack to 
> another=
> .  The wire between the 2 plugs is really short.  Any idea or better 
> explan=
> ations, please let me know.  I am so confused now.