I am at a loss to know how to model it with any confidence, for wires close
to or on the ground.
David G3UNA
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Carl
Luetzelschwab
Sent: 01 August 2018 23:02
To: Joe Subich, W4TV; topBand List
Subject: Re: Topband: WB6RSE Flag type loop question
Joe,
> However, the Waller Flag is a dual loop that trades off signal for
> pattern.
I agree. But I believe it's gain is very low mostly because it's made up of
electrically very small loops.
A very small loop has its main lobes in the plane of the loop - not
perpendicular to the plane of the loop as in a quarter-wave-on-a-side loop
in a Quad antenna. When a very small loop is mounted horizontally, there's a
null in the pattern towards the ground. So even though it's mounted
horizontally, it is less susceptible to the effects of the ground.
> The LOG is a horizontally polarized antenna nearly on the "boundary"
> where the horizontally polarized signal goes to zero. The better the
> ground (higher conductivity), the worse (lower) the signal level from
> the LOG (thank you Dr. Maxwell).
I also agree with Dr. Maxwell. But a very small loop mounted horizontally is
not like a big antenna mounted horizontally.
And Nick is correct - KK5JY shows a two-loop system farther on down - it's
kind of approaching a horizontal Waller Flag.
Carl K9LA
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