Dave is correct of course
However when I put mt 40m 329 in service about 5 years ago
I decided to go with a commercially built balun
bought a 4:1 from WX0B and it has worked extremely well
73
steve
KG5VK
On Fri, Nov 21, 2008 at 11:58 PM, David Pruett <k8cc@comcast.net> wrote:
> Rick Dougherty NQ4I wrote:
> > Hi all...maybe not the right forum, but definately the right audience...I
> am
> > looking for the length of phasing/feedline that is installed on the
> Telrex
> > 40m329....is it 1/2 wave of 50 ohm?? Thanks de Rick NQ4I
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> >
> Rick,
>
> The coax is 1/2 wave length, forming a half-wave balun which steps up
> the 50 ohm feedline impedance to the 200 ohm feedpoint impedance of the
> 40M329. Strictly speaking, the coax impedance is irrelevent, but 50
> ohms is what I believe the original Telrex documentation called for and
> should certainly work fine.
>
> 73,
>
> Dave/K8CC
>
>
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