Tony the walls of my house are Stone and about the thickness of your wall.
When I came to installing a good ground system I drilled through the stone
wall fairly easily and ran copper tubing through for the ground. I do not
see any difference between that and your Wall. Give it a try with a good
heavy drill. 73 Clive GM3POI
-----Original Message-----
From: topband-bounces@contesting.com [mailto:topband-bounces@contesting.com]
On Behalf Of N2TK, Tony
Sent: 10 August 2012 18:21
To: 'topband'
Subject: Re: Topband: Radials over a stone wall
Thanks Bill and Herb about drilling a hole through the wall. That could be
tough. It is a stone wall with no mortar. It is about 20-28" thick. It is
well constructed with large field stones. It would be rough to drill through
all of that. I had thought about taking portion of the wall apart but
figured I would never get it back to looking as good as it does now. The
stones go fairly deep so not much chance of going under the wall.
73,
N2TK, Tony
-----Original Message-----
From: Bill Wichers [mailto:billw@waveform.net]
Sent: Friday, August 10, 2012 12:26 PM
To: N2TK, Tony; topband
Subject: RE: Topband: Radials over a stone wall
I would expect an "up and over" to clear the wall would result in a
choke-like effect on the radial and would, at best, reduce the radial's
effectiveness.
It should be easy to just drill some small (maybe 1/4"?) holes through the
wall in a few places to pass the radials through. With a decent hammer drill
and a carbide bit a small hole like that is pretty quick and easy to
complete -- even in concrete or stone. Then just use a piece of coathanger
wire as a wire fishing tool to run the radials through the hole.
I use a wire pulling tool called a "creep-zit" to pull radials under fallen
trees and logs in the woods. It works great. I basically just take one of
the 6 foot long fiberglass rods (each of which is a little over 1/8"
diameter), tape the radial to one end, and then I can push it under fallen
debris easily. With a little practice you can even get around hidden
obstructions in the ground this way.
-Bill
> 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.
>
>
>
> 73,
>
> N2TK, Tony
>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
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