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[TowerTalk] Modeling the Moxon

To: Central KY CW/DX Operators <CW-DX-OPS@LSV.UKY.EDU>, Bill via TowerTalk <towertalk@contesting.com>
Subject: [TowerTalk] Modeling the Moxon
From: Dave Sublette <k4to@arrl.net>
Date: Wed, 26 Jul 2017 18:28:42 -0400
List-post: <mailto:towertalk@contesting.com>
I have spent a fair amount of time reading a few of the Moxon construction 
articles about the modified Moxon for 40 meters.  I have a spare 6 element 20 
meter Telrex monobander for 20 meters in my barn.  Doing some scratching on 
paper, it looks like I could build two, two element Moxons for 40 using the 
material in that yagi.  I would need to buy the tubing necessary to build the 
Tee sections on the end.

Since all of the element diameters and taper schedules would be different, I 
should model it.  I have the Antenna Model Software package.  I haven’t used it 
much.  I haven’t modeled antennas in over 15 years. I used to use K6STI 
software when I did and I loved it.  Some of the articles I have read say good 
things about the Antenna Model program.  I am wondering if that would be good 
enough to use on the Moxon.

Now I know the Moxon doesn’t model well. The W6NL version is the standard and 
the best advice is to build it like that.  But I have all this beautiful 
aluminum that I don’t want to waste.  Plus, the 3 1/2 inch boom on the T-rex is 
really stout enough to handle this antenna.  At least one article says they 
wish they had used a larger boom diameter.

I suppose a good plan would be to model the W6NL and then my version on the 
same software and adjust my version until the results matched those obtained 
with the W6NL.  The question is ..  Is the Antenna Model package adequate for 
the job?

A really good answer would be that someone has already modeled the W6NL on 
Antenna Model and would share the file with me.  :-)

Thanks,

Dave, K4TO
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