John,
As you realise, adding a choke to the G5RV is not primarily about
improving the match or saving dB - it's about stopping the ladderline,
and more importantly the coax, from becoming part of the radiating
structure.
Chances are the coax comes very close to equipment in the shack/home
that is susceptible to RFI, and that generates noise on RX; it probably
then connects directly to the household mains earth. You don't want it
becoming a part of the antenna!
Varney didn't have that problem - no PCs, digital 'phones, plasma TVs
etc in his shack when he developed the antenna ;)
Steve G3TXQ
On 03/02/2011 03:44, John Geiger wrote:
> I agree with Barry's observations as well. I have worked some decent DX
> with less than perfect matches. Worked my first C5 on 80 meters with a 3.5:1
> SWR. My only question about the balun was to minimize the radiation from
> the coax portion of the feedline. I have gotten some good ideas from this
> discussion as to the balun to use.
>
> 73s John AA5JG
>
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