Topband: T Vertical feed

DAVID CUTHBERT telegrapher9 at gmail.com
Thu Jan 26 16:08:04 PST 2012


The simulated radiation resistance is 16 ohms, your GND loss is 9 ohms and
efficiency is 64%.

No balun is needed.

Dave WX7G
On Jan 26, 2012 3:57 PM, "Jim Brown" <jim at audiosystemsgroup.com> wrote:

> On 1/26/2012 2:12 PM, ct1ilt at sapo.pt wrote:
> > t is a common mode choke, you can
> > see it this picture from an Vertical I had (
> >
> http://paginas.fe.up.pt/~ee04056/CT1ILT/pics/tvertical/version1/thumbs/15.JPG
>
> You can build a MUCH better choke with MUCH less coax by winding turns
> through #31 Fair-Rite cores.  See my website for details.
> http://audiosysemsgroup.com/RFI-Ham.pdf
>
> 73, Jim K9YC
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>


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