[R-390] RE: Shack Grounding

Fri, 21 Jun 2002 17:32:01 -0400

A couple of suggestions.  First, install a 3 wire power cord.  I use old plug-in 
computer power cords and cut the female end off.  Make sure the black lead 
is attached to the side of the hash filter on the receiver that is fused.  I believe 
its marked "B" but don't hold me to it.  Remove the fuse and prove the 
connection with an ohm meter.  

Put a ring terminal on it and hook the green ground lead under the nut that 
holds the terminal cover on.

While self-serving, let me suggest that I rebuild the filter caps for you.   
Chances are good that they are leaking badly.

-73-

----- Original Message -----
From: "Kim Mackey" <[email protected]>
To: <[email protected]>
Sent: Thursday, June 20, 2002 11:21 PM
Subject: Re: [R-390] Ham Shack Grounding Help!!!!

> I have received lots of good info that I can use to help eliminate my
noise  problems.  I was out all day today so did not get to follow up on any of
> this.  Yesterday however I did do one check and it did not look good.
There > is 60 v. from the chassis of my radio to the cold water pipe.  Not good 
at  all.  I am going to get an electrician in here as soon as possible to see
> what we are going to have to do to fix that. >

> Tomorrow I will post info about the ham shack set up what computer I'm
using  and such, to narrow down what is going to be my best approach.  One 
thing  I'm pretty sure of; the power supply in the computer may be the culprit 
on  the Windows machine.  I get that noise even with the monitor off.  On my
mac  system I get the noise from the monitor (it's not a mac monitor).  The
noise  it generates if at different freqs. And I can fix it by switching monitor
> resolutions.  But the noise from the PC is on all bands and top to bottom
of   the KC.

> Kim
-----------------------------
Chuck Rippel, WA4HHG
R390A List Co-Administrator
Reply to: [email protected]

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