[Elecraft] Re: More antenna problems

[George, W5YR]

Theory supports the vertical being the nosier antenna since soil attenuation
tends to result in most man-made noise being predominately vertically
polarized a few wavelengths beyond the noise source. However, if you have a
really large and effective radial field extending from the antenna to near
the noise source(s), then the polarization shift could be reduced or not
take place at all and the vertical would be no nosier than any other
antenna.

But as Jim points out, noise pickup is like real estate: "location,
location, location!" There are probably as many exceptions as there are
examples.

I know that my Butternut HF-9V is much noisier than my two 20 meter EDZs
(mounted at right angles) or my 80-meter full-wave horizontal low loop. By
the same token, the loop is seldom any quieter than the EDZs despite "common
knowledge" that loops are quieter.

73, George W5YR
Fairview, TX
w5yr at att.net
http://www.w5yr.com


----- Original Message ----- 
From: "Jim Brown" <jim at audiosystemsgroup.com>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, July 28, 2004 10:34 AM
Subject: Re: [Elecraft] Re: More antenna problems


> On Wed, 28 Jul 2004 07:10:27 -0400, Parker Buckley wrote:
>
> >I believe the ground system is key to the whole thing.....the ground
mounted
> >vertical is simply quieter than elevated ones.
>
> You may be right, but I suspect that the location of the antenna with
respect to the
> noise is more likely the key.
>
> Jim K9YC