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Re: Topband: K2AV Counterpoise

To: topband@contesting.com
Subject: Re: Topband: K2AV Counterpoise
From: W0MU Mike Fatchett <w0mu@w0mu.com>
Date: Wed, 25 Oct 2017 22:06:02 -0600
List-post: <mailto:topband@contesting.com>
I have read in a couple of articles that the radials need only be as long at the vertical element as well.  I think W9UCW was one of the authors.  It is all magic.

W0MU


On 10/25/2017 9:49 PM, Wes Stewart wrote:
I posted what I would, and am doing.  I subscribe to the idea that the radials should be about the length of the vertical as a minimum and using my friend, N7CL's rule of thumb, their number should be enough to keep the tips no further apart than 0.015 lambda.

On, or in, the ground radials are much longer electrically than they are physically because the Vp is much reduced.  How much so, who knows?  Put in enough and resonance doesn't really matter. See Devouldere.

Wes  N7WS


On 10/25/2017 7:46 PM, Michael Walker wrote:
Explain why more radials over the counter poise.

I'm hearing that 1/4 wave radials are actually too long and shorter raises the feedpoint.

Mike va3mw



On Oct 25, 2017, at 5:26 PM, Wes Stewart <wes_n7ws@triconet.org> wrote:

I would forget the counterpoise and add more ground radials.

See https://www.w8ji.com/counterpoise_systems.htm

Wes  N7WS


On 10/25/2017 7:38 AM, James Denneny wrote:
I am constructing the K2AV FCP Counterpoise  for my TB inverted L antenna.  I live on a small lakeside lot.

Should I disconnect the few ground radials when I install the FCP or leave them connected?  Would both together degrade performance?

Jim K7EG

Sent from Mail for Windows 10

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