Hi Robert,
there was an article in Radcom in the late 80's on shunt feeding
towers, think it was by G3TKN?
He was using a P60 with tribander on top, and if my memory serves me
using it on 40, 80 & 160.
Would be worthwhile getting your hands on it. Good luck with the
project
73 Gavin
GM0GAV
----- Original Message -----
From: "Robert Webb" <G0urr@btopenworld.com>
To: <towertalk@contesting.com>
Sent: Thursday, August 08, 2002 8:43 AM
Subject: [Towertalk] Fw: Shunt fed towers.on 80m maybe 160m
> OK Guys, i have read the literature at various sources, from
websites to
the
> ARRL antenna book ( best buy ) on how to shunt feed a tower. Now it
comes
to
> doing it, a few things occurr to me.
> Should the shunt feed run exactly parallel to the tower.?
> Should the shunt feed be adjacent to a leg or a flat side ?
> How can i be certain that the tower is actually being used as a
radiator.
> Maybe the shunt feed is acting as a vertical against the tower as a
ground.
> FYI the tower is a Versatower PB60 with a Cushcraft A3S on the top,
a 40m
> loop in a triangle config fed at the top is at the 55ft point, and a
small
> 2/70 vertical is on a side arm at abt 30ft. The sidearm is steel and
is
> electrically connected to the tower. I intend to attach the Shunt
feed to
> this arm as it is directly above my ground termination conections.
Youre
> thoughts please, Thanks in advance,
> Robert Webb
> G0URR
>
>
>
>
>
>
>
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