[TenTec] Coaxial Ground

[Mike Gorniak]

Hi Gary,

Probably the easiest explanation is to call it a "shielded ground wire". The coax inner conductor is the actual ground wire, and the shield keeps it from radiating.

My 2nd floor installation was a nightmare, given that I was also very close to the antenna center, which was about 10 feet above the roof of my house. This was one technique I used to beat the "RF in the Audio" problem. I also used toroids and bypass capacitors in generous quantities.

OF course, each RFI condition is unique in some way...YMMV.

73,

Mike
NM7X 




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Message: 2
Date: Mon, 16 Oct 2006 11:51:21 -0400
From: "Gary Hoffman" <ghoffman at spacetech.com>
Subject: Re: [TenTec] TenTec Digest, Vol 46, Issue 45
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Message-ID: <00f401c6f13a$f04ca5b0$9ee7254a at aa2iz>
Content-Type: text/plain;	charset="iso-8859-1"

Mike,

I'm curious.  What is the theory behind this approach ?  I'm always
interested to learn more approaches to grounding.

Gary


----- Original Message ----- 
From: "Mike Gorniak" <mgorniak at genesiswireless.us>
To: <tentec at contesting.com>
Sent: Monday, October 16, 2006 11:39 AM
Subject: Re: [TenTec] TenTec Digest, Vol 46, Issue 45



> > Hi John,
> >
> > If you are going to run that wire down to a ground rod, you might try
> > using coax instead. Attach the center conductor Only at the rig end, and
> > connect Both the shield And the center conductor at the ground rod end.
> > Another variation is to connect the center conductor Only at both the
> > rig and ground rod ends, and then use a .1 or .01 mfd. capacitor to
> > connect between the shield and the Center conductor at the ground rod
> > end, or both ends.
> >
> > When I had my ham shack on the second floor, this configuration worked
> > for me.
> >
> > Good Luck, and please let us know of your progress!
> >
> > 73,
> >
> > Mike
> > NM7X

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