----- Original Message -----
From: "Jim Brown" <j...@audiosystemsgroup.com>
To: <topband@contesting.com>
Sent: Wednesday, August 20, 2014 12:48 PM
Subject: Re: Topband: Skimmer calibration
On Tue,8/19/2014 7:08 PM, Tom W8JI wrote:
Radials under the vertical antenna have virtually no effect on wave
angle unless they are sparse and grossly unbalanced, allowing them to
radiate like a low horizontal antenna.
Radials change the efficiency, not the pattern, unless the radials
radiate like a dipole.
On Wed,8/20/2014 9:05 AM, Tom W8JI wrote:
This is because the "often poorly understood" Fresnel zone extends far
beyond practical radial field area, and virtually all of the ground
wave attenuation from soil losses is miles from the antenna over the
entire long length of a path. It is not localized loss.
I agree completely with both of Tom's posts.
73, Jim K9YC
You should, he didnt say anything wrong.
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