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[TowerTalk] NEC2 - Correcting for element taper on a loaded element?

To: towertalk reflector <towertalk@contesting.com>
Subject: [TowerTalk] NEC2 - Correcting for element taper on a loaded element?
From: Scott McClements <kc2pih@gmail.com>
Date: Sun, 26 Apr 2009 22:45:58 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Hi All,

I was modeling a Cushcraft 402CD loaded 40m yagi. I use Nec-Win Plus
and MultiNEC. I enabled stepped diameter correction in both programs
and noticed that in both programs a taper correction didn't occur. The
output from NEC-Win Plus during the taper correction seemed unhappy
because the element resonated around 11Mhz, but the simulation
frequency range was 7 Mhz.

I am not sure where the taper corrections are derived from in these
two programs, but is there a proper way to do this?

-Scott, WU2X
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