Topband: Shunt fed tower

[Price Smith]

Hello George and all.

I have been shunt feeding my tower since 1991. It is is 80ft of Rohn 45G 
with a stack above. At 80ft
is a Telrex 20M546 (20mtr 5el 46ft boom). Guy wires are Phillystrand. That 
made a big difference.
E-mail me and I will send the info.
73.Price WØRI


> Hi Phil
>
> There is an excellent article in Ham Radio May 1975 by John True, W4OQ on
> "shunt-feed systems for grounded vertical radiators".  His system uses an
> omega match for matching the gamma rod (or wires) to the radiator.
>
> Using large diameter tubing or multiple wires for the gamma will result in
> more usable bandwidth on top band.
>
> And the article makes several other suggestions that are worthwhile.
>
> I have personally used his system and can recommend it.
>
> If you don't have access to this article, send me a biz size SASE and I 
> will
> forward a copy.
>
> As to the radials - put as many (up to 60) as you can in all directions,
> irregardless of their length.  But with 5K feet already down,  I wouldn't
> worry abt more.
>
> 73  George  W8UVZ
>