Topband: Shunt Fed Tower

[Herbert L. Schoenbohm]

mike stokes wrote:
> I plan on shunt feeding my 88' Rohn 45 Tower for 160M.  It has 12 feet of
> mast out the top.  The only antenna is an 40M Inverted Vee @ 80' 
>
> My question is, is this tall enough to shunt feed on 160M without any Yagis
> for for the Tophat effect ?
>
>
> Suggestions:

   1. Make sure the inverted V is not going to interact and distort  the
      vertical TOA.
   2. Try to at least get a 30 foot horizontal  boom on the mast in the
      mean time. This will bring you very close to a 1/4 wave.
   3. Use a 3 wire cage to make the feed a bit more manageable and
      broaden the B/W.
   4. A 100 foot standing alone is overall a very good radiator low
      angle radiator on 1.8 if the ATU can be perfected.

Good Luck,

Herb, KV4FZ