Tnx Dave,
That would be very helpful.
73,
N2TK, Tony
-----Original Message-----
From: topband-bounces@contesting.com [mailto:topband-bounces@contesting.com]
On Behalf Of DAVID CUTHBERT
Sent: Friday, August 10, 2012 12:20 PM
To: Herb Schoenbohm
Cc: N2TK, Tony; topband
Subject: Re: Topband: Radials over a stone wall
I can run a NEC simulation tomorrow to see how much radials up and over
affect things.
Dave WX7G
On Aug 10, 2012 10:16 AM, "Herb Schoenbohm" <herbs@vitelcom.net> wrote:
> On 8/10/2012 11:17 AM, N2TK, Tony wrote:
> > I shunt feed my tower for topband. I use variable vacuum caps and a
> vacuum
> > relay at the base to switch between the low end and the high end of
> > the band. It seems to work okay. I have 100' buried radials spaced
> > 10' at the ends from o degrees going clockwise through about 220
> > degrees. I have a
> 4'
> > high stone wall that runs about 20/200 degrees that is about 35' at
> > its closest point to the tower. So the radials are progressively
> > shorter on
> the
> > West side of the tower.
> >
> >
> >
> > I am making an assumption that going up over the wall will distort
> > any benefits of extending the radials on the West side? Is that a
> > true assumption.
> >
> > I can't really have the radials go from the tower base up at an
> > angle to clear the stone wall and continue on. If I am to extend
> > them the radials would have to go on the ground to the wall then up
> > and over and back
> down to
> > the ground.
> >
> >
> >
> >
> Tony, A long masonry drill used in the cable TV industry (which has a
> hole on the pointed end to attach the wire and pull it through the
> wall, is your best option in my view.
>
> Herb Schoenbohm, KV4FZ
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|