Construct the boom's feedline with the inversions, etc and use a
single source.
Only way you actually will model the REAL performance closely.
Multiple sources allows you to specify levels and phasing that may not
be possible with the real feedline configuration.
Good Luck, Guy.
----- Original Message -----
From: "jljarvis" <jljarvis@abs.adelphia.net>
To: <towertalk@contesting.com>
Sent: Monday, March 25, 2002 1:33 PM
Subject: [Towertalk] NEC 4 Windows limitations?
>
> Folks,
>
> I'm attempting to model stacked Log Periodics, and have run
> into what looks like a limitation in NEC 4 Windows.
>
> Each LPDA has 8 elements. Each element has a source, with
> the phase reversing by 180 degrees on alternating elements.
>
> To stack, I duplicate the first LPDA, and change the Z height
> dimension. When assigning sources, I discovered that they
> are limited to 9. Must be some kind of stack overflow error,
> as the program crashes.
>
> Anyone care to offer an alternate approach to the problem?
>
> N2EA
>
>
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