----- Original Message -----
From: "Paul Christensen" <w9ac@arrl.net>
To: <topband@contesting.com>
Sent: Wednesday, November 23, 2011 1:36 PM
Subject: Re: Topband: 1/2 wave spacing vs. 1/4 wave
>> Again. i am not talking forward gain at any angle of radiation, i am
>> talking gain at a specific angle.
>
> Wolf, the launch angle field strength immediately above the horizon is
> going
> to be determined primarily by the near and medium-distance ground
> conductivity. Notwithstanding gain, nulls, etc between the two arrays, I
> would be surprised if the elevation profile between 0 and 10 degrees would
> change much unless there's a change in ground conductivity in the
> different
> directions of the arrays.
>
> Paul, W9AC
A 1/2 wave will be less ground dependent, have a lower elevation peak over
real ground and in most cases be a better low angle radiator. Not very
practical on 160 however unless you move into an abandoned BCB site with a
big tower.
Carl
KM1H
Carl
KM1H
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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