Has anyone suggested to just tunnel under the wall? I don't know the
construction of that particular wall, but stone fences in Kentucky are just
dry stone stacked. A sharp stick would poke a hole under it and then you
could just pull the radial under and take it where you wanted to go. BTW
-- stone fences in KY are usually registered historical things and one must
be careful doing thing to or with them. But on a dark night, who would
notice ?? ;-)
73,
Dave, K4TO
On Mon, May 14, 2018 at 12:20 PM, Jim Thomson <jim.thom@telus.net> wrote:
> Date: Mon, 14 May 2018 10:00:10 -0500
> From: Kelly Taylor <ve4xt@mymts.net>
> To: Les Kalmus <w2lk@bk-lk.com>
> Cc: towertalk@contesting.com
> Subject: Re: [TowerTalk] Laying out radials around a stone fence
>
>
> Sent from my iPhone
>
> > On May 14, 2018, at 08:50, Les Kalmus <w2lk@bk-lk.com> wrote:
> >
> > Radials on/in the ground aren't resonant. Most of the current in them
> will be close to the tower regardless of the length of those radials so put
> down as many as you can at whatever length they come out which will be
> better than no radials.
> >
> > Les W2LK
> >
>
> >Yes, however the engineering on radials has progressed past asking
> whether on- or in-ground radials are resonant and now considers the
> benefits of reducing resisitivity of the soil, as Jim Lux so aptly
> described. It?s not just about being part of a return path.
>
> >The axiom about more short radials being better than fewer long radials
> remains, especially if your space or wire supply is limited. But if you
> have more of each, radials farther out are still beneficial.
>
> >It?s probably still wise to not sacrifice a dense field of radials near
> the antenna at the altar of fewer longer radials, but it didn?t seem space
> or wire was limited, merely that there?s an obstacle in the way.
>
> >73, kelly, ve4xt
>
>
> ## AM broadcast stations around here all use 120 radials..and all are at
> least .4 wave long. Thats a min of four tenths of a wavelength. At .4
> wave long, the distance between the far ends of any
> 2 adjacent radials is optimized. In ON4UNs low band book, he depicts
> the bulk of the ground reflection occuring .25 wave lengths out from the
> base of the vertical. If thats the case, then I can see
> why you would want them a little longer. If I had a rock wall in the
> way, I think I would be inclined to go over top of it...or stop at the
> wall, then continue on the other side. But that would all depend
> on how close the wall was to the base of the vertical.
>
> Jim VE7RF
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