[TowerTalk] Re: End Fed W8JK versus Quad

[George, W2VJN]

An 8JK consists of 2 elements fed OUT of phase.

George

----- Original Message -----
From: DavidC <eDoc@netzero.net>
To: <towertalk@contesting.com>; Pete Smith <n4zr@contesting.com>
Sent: Monday, June 19, 2000 8:10 PM
Subject: Re: [TowerTalk] Re: End Fed W8JK versus Quad


>
> If your modeling is correct then the value of this antenna is
... ?
>
> Can you "close the loop" at the top and see what happens
> when a similar shape is fed as a quad?
>
> - Thanks! & 73, DavidC  K1YP in Hudson, FL
>
>
*****************************************************************
*******
>
> > >In the vertical position how would it compare side-by-side
> > >with a very narrow (tall) rectangular "quad"?  (roughly the
> > >same overall dimensions)
> > >
> >
> > David, I just did a quick and dirty model, based on W2VJN's
description.
> > It is just 2 half-wave verticals, an eighth wavelength apart,
fed in
> phase.
> >  For fun, I made the elements start .1 wavelengths above
ground.  The
> > initial results are very unsatisfying -- essentially no
azimuth
> directivity
> > and a maximum gain (at about 12 degrees above the horizon) of
.7 to 1.7
> dBi
> > depending on frequency.  Now I can't be sure I'm modeling
this properly,
> > but that's what it seems like.
> >
> > 73, Pete Smith N4ZR
> > n4zr@contesting.com
>
>
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