Re: [TowerTalk] Conversion to W6NL 40M MOXON

[Pete Smith <n4zr@contesting.com>]

At 01:52 PM 5/25/2004, GALE STEWARD wrote:
> I read with interest the transcript of the Dayton
> presentation by W6NL of his 2 element 40M MOXON type
> yagi.
>
> http://www.kkn.net/dayton2004/W6NL_40M_MOXON_YAGI.pdf
>
> I wondered if anyone has thought about converting a CC
> 40-2CD (or equivalent) to the W6NL MOXON design. This
> would eliminate the loading coils and cap hats. Maybe
> someone has even tried this already.

After a quick look at the paper and the associated .gif drawing that gave 
the tubing sizes, I couldn't help wondering about the structural soundness 
of the intersection between the elements and the loading structures, which 
involve two different sizes of element tubing and a third size in the cross 
pieces.  Dave literally wrote the book on physical design of yagis, but 
that looks like a pretty critical area.  Didn't I hear somewhere that 
NT1Y's new 80M F12 yagi failed at similar points in the elements?

Maybe Dave or someone familiar with the design can explain how to properly 
fabricate that 4-way connection.  The antenna modeling results sure look 
fabulous.


73, Pete N4ZR
The World HF Contest Station Database
was updated on April 26, 2004
2706 contest stations at
www.pvrc.org/WCSD/WCSDsearch.htm  

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