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Re: [TowerTalk] ground wire thoughts

To: towertalk@contesting.com
Subject: Re: [TowerTalk] ground wire thoughts
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Thu, 24 Dec 2020 14:54:22 -0800
List-post: <mailto:towertalk@contesting.com>
On 12/24/2020 2:21 PM, w5jmw@towerfarm.net wrote:
Jim,what about the crossing of the radials.Isn't doing that not recommended?

That's primarily an issue with antenna arrays. You still want as many runs of copper as practical radiating out from the base of each vertical antenna.

Right now I can do either.I am confined to such a pattern
due to me antenna placement.I have a overhead power run alomg my east fence and a metel fence along my west.I have already attached to both as a ground.really more of a lightning dispersal path.

Yes, but there's a big inductor in series with the earth connections that the fence makes, which defeats its purpose for lightning protection. Above low audio frequencies, inductance dominates the electrical impedance, and lightning is primarily an RF event, not a DC event. The energy in a strike has a VERY broad peak more or less in the middle of the AM broadcast band. The noise we OFs remember from listening to the radio late at night are nothing more than the sum of many thousands of lightning strikes, propagated to our antennas.

I might point out that I do have pretty good soil.I have very dense clay in certain at abt 3-4 foot.It does stop water sippage to a point.Also we have an aerobic septic system which the spray nozzles are located in thi same pasture.

Losses in the system will be lower with better soil conductivity.

73, Jim K9YC

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