[TowerTalk] 80/40 coax trap dipole design

Tod - ID tod at k0to.us
Wed Dec 15 13:40:55 PST 2010


Here is the link to my web site. On the page in the antenna column you can
click on the Yardley Beers article that details about how to build a dual
band dipole that has traps which are NOT resonant on either of the bands. 

I had thought it would be available on the ARRL web site but it is not,  so
I posted it on mine for those who wish to examine it.

I sent the .pdf file directly to WW3S . 
The URL to the web site is http://www.k0to.us/HAM/ham.htm

Tod, K0TO

> -----Original Message-----
> From: towertalk-bounces at contesting.com 
> [mailto:towertalk-bounces at contesting.com] On Behalf Of WW3S
> Sent: Tuesday, December 14, 2010 7:16 PM
> To: towertalk at contesting.com
> Subject: [TowerTalk] 80/40 coax trap dipole design
> 
> Anyone have a good design for one of these? I got the 40m 
> length ok, on a 
> fence about the traps...some designs say to make them resonant, W8JI 
> recommends again that....so if they aren't resonant on 40m, 
> what freq do you 
> make them resonant for? And does that affect the length of 
> the 80m leg?
> 
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