[TowerTalk] Musing on G5RVs, baluns et al......

[Steve Hunt]

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
>