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Re: [TowerTalk] Fwd: Re: vertical ground experiment

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Fwd: Re: vertical ground experiment
From: John Cowan <w0tmm@yahoo.com>
Date: Thu, 21 Jun 2007 15:08:15 -0700 (PDT)
List-post: <mailto:towertalk@contesting.com>
That was in reference to:
   
  "A 1/4 wave vertical over perfect ground should measure about 36 ohms
of pure resistance at the feed point. Any loss in the ground will be
added to the 36 ohms and can be easily measured. 

If for example, you measure 50 ohms you might think you have an
excellent match, and you do, but you have about 14 ohms of resistance
in series with the ground plane. Not good. "
   
  I keep reading about this "perfect ground of 36 Ohms". I was trying to figure 
out how having less than 36 Ohms is significant, insignificant, or just an 
ambiguous reading.

Dan Zimmerman N3OX <n3ox@n3ox.net> wrote:
  That the feedpoint impedance is 27 ohms.

On 6/21/07, John Cowan wrote:
> If I have a 1/4 wave vertical and the feedpoint measures 27 ohms, what does 
> that tell me?
>
> Note: forwarded message attached.
>
> John W0TMM
>
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