As the kids in my neighborhood get older, I think it's time to
consider an anti-climbing guard around the base of my tower.
I have seen articles in the past (long before I had a tower) but
can't seem to locate the articles now. How do you folks do it?
73, Kirk WR3O
>From Fred Hopengarten" <k1vr@k1vr.jjm.com Sat Sep 30 06:05:12 1995
From: Fred Hopengarten" <k1vr@k1vr.jjm.com (Fred Hopengarten)
Subject: Rust prevention.; TOWERS
Message-ID: <306cd00a.k1vr@k1vr.jjm.com>
On Fri, 29 Sep 1995 08:21:27 -0500, perring@ICSI.Net wrote:
> "Matthew S. Trott" <0007288678@mcimail.com> asked:
>
> "How do you center the plumb bob"?
>
> The answer is:
> There is no need to center it.
> The desire is to just have a vertical sight line for the legs.
> The plumb bob may be hung from any of the tower struts with no
concern for it's being centered.
>
> N5RP, Bob
> Houston, Texas
> Email: perring@icsi.net
K1VR adds: Actually, I've always put my plum bob hanging
from a string on a nearby tree. That way, when trying to
make the first few sections vertical, I can tap the tower
and I don't have to wait for the plumb bob to stop swaying.
It is just as easy to line up to a plumb bob 10 feet away,
as to a plumb bob hanging from the tower. The human eye is
able to see parallel lines, or out-of-parallel lines, very
easily, and to a great degree of accuracy.
--
Fred Hopengarten K1VR
Six Willarch Road * Lincoln, MA 01773-5105
home + office telephone: 617/259-0088 (FAX on demand)
internet: k1vr@k1vr.jjm.com
"Big antennas, high in the sky, are better
than small ones, low."
>From Fred Hopengarten" <k1vr@k1vr.jjm.com Sat Sep 30 06:16:50 1995
From: Fred Hopengarten" <k1vr@k1vr.jjm.com (Fred Hopengarten)
Subject: more on guywires and insulators
Message-ID: <306cd2c4.k1vr@k1vr.jjm.com>
On Fri, 29 Sep 1995 10:47:06 -0700 (PDT), "Big Don" <bigdon@eskimo.com>
wrote:
> Philly sounds good ... on paper. Does anyone (besides the company) have
> any long term real world experience with it they can share?
> Particularly, how does it survive say 15 years of solar UV radiation,
> birds and squirrels digging their claws into it, windborne debris
> abrasion, friction with vegetation you didn't get around to trimming back
> right away, etc.
K1VR replies: I've had Phillystran, equivalent to Rohn 1/4
inch EHS galvinized steel cable, supporting my 97' Rohn 25
tower since 1981. The only problem I've encountered is
abrasion. It was rubbing against a tree branch and I
eventually had to splice the cable. I've subsequently used,
on another guy where occasional abrasion was unavoidable as
branches bent down under heavy snow loads, automobile gas
line hose OVER the Philly. The gas line hose has fiberglass
woven into it and has excellent abrasion resistance.
--
Fred Hopengarten K1VR
Six Willarch Road * Lincoln, MA 01773-5105
home + office telephone: 617/259-0088 (FAX on demand)
internet: k1vr@k1vr.jjm.com
"Big antennas, high in the sky, are better
than small ones, low."
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