[TowerTalk] 402CD Modeling Help

[john at kk9a.com]

Brilliant Terry! Insulated elements are much easier to model. Unless you
want to  model the exact antenna that you have (and I am not sure how you
would do the loading coils), I would build it according to the manual.  If
you really want to improve the 402CD either swap in Hi-Q coils for the
little ones or make it in to a Moxon.

John KK9A




To:	"towertalk at contesting.com" <towertalk at contesting.com>
Subject:	Re: [TowerTalk] 402CD Modeling Help.
From:	"Zivney, Terry" <00tlzivney at bsu.edu>
Date:	Thu, 30 Nov 2017 19:15:23 +0000
List-post:	<mailto:towertalk at contesting.com>
Ted:

The Reflector is grounded to the boom in the 402CD
while the Reflector is insulated from the boom in the newer  XM240, I think.
So, part of the difference in element length is probably a correction for the
element mount.

Note that the Driven Elements are insulated from the boom in both models.

73

Terry N4TZ