[TowerTalk] 80/40 coax trap dipole design

Tod - ID tod at k0to.us
Tue Dec 14 19:10:33 PST 2010


See the Ham Radio article by Yardley Beers in which he discusses
non-resonant trap dipoles and how you select the non-resonant frequency.

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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