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Re: Topband: K2AV Counterpoise

To: W0MU Mike Fatchett <w0mu@w0mu.com>
Subject: Re: Topband: K2AV Counterpoise
From: Michael Walker <va3mw@portcredit.net>
Date: Thu, 26 Oct 2017 07:08:11 -0500
List-post: <mailto:topband@contesting.com>
And, apparently, that is like an old wound that will not heal.  

Radials need to be much shorter and I am trying to find the supporting math.  
At a 1/4 wave, there is too much ground loss. 

Mike

> On Oct 25, 2017, at 11:06 PM, W0MU Mike Fatchett <w0mu@w0mu.com> wrote:
> 
> 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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