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-boun...@contesting.com [mailto:topband-boun...@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:bi...@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 _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK ======= Email scanned by PC Tools - No viruses or spyware found. (Email Guard: 9.0.0.2308, Virus/Spyware Database: 6.20360) http://www.pctools.com/ ======= ======= Email scanned by PC Tools - No viruses or spyware found. (Email Guard: 9.0.0.2308, Virus/Spyware Database: 6.20360) http://www.pctools.com/ ======= _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK