[TowerTalk] Fwd: [Tower Talk] Anti-climbing technology

[Pete Smith N4ZR]

I don't know if this would work with a crank-up or tilt-over, but I 
simply wrapped my Rohn 25 in hardware cloth (two passes x 3 feet wide, 
starting about 3 feet up) and thoroughly wired it to the legs with heavy 
wire and a big pair of pliers.  When I need to climb I bring a 10-foot 
stepladder. Don't know if that would satisfy.

73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

On 1/21/2014 2:39 PM, Hans Hammarquist wrote:
> Larry,
>
>
> I was required, in order to get the tower permit, to provide "adequate protection of the tower for unauthorized access". I put together three panels, four (5) feet long. The cross piece, that holds the 4 foot long wood piece (4"x1") together "hangs" on the screws that are attached to the tower legs. I drilled holes in the cross members at a distance so the cross members are lightly press the devise onto the tower legs. When I need access I simply remove two screws, upper and lower, open the panel like a door and start climbing.
>
>
> There are no parts
>
>
> I think it is picture #38 that show the anticlimb devise. As you can see, it starts at 4 feet above the curb and reach 9 feet, too high to react over.
>
>
> If you need more detailed pictures, write me back and I will send them directly to you.
>
>
> Best 73 de,
>
>
> Hans - N2JFS
>
>
>
> -----Original Message-----
> From: Larry Loen <lwloen at gmail.com>
> To: TowerTalk <towertalk at contesting.com>
> Sent: Tue, Jan 21, 2014 12:39 pm
> Subject: [TowerTalk] [Tower Talk] Anti-climbing technology
>
>
> As some may remember, I have a remote shack.  I'm not there a lot,
> obviously.  So, the site has to basically "protect itself" when I'm not
> there.
>
> Accordingly, compared to some here, I have to seriously consider some sort
> of anti-climbing technology for my tower.
>
> I should have done this lone since, but I see a lot of problems:
>
> 1.  I am having trouble finding vendors that make anti-climbing panels.  A
> vendor I've worked with on other things, emailed me and admitted he's
> stopped making them -- too custom apparently to bother with. They would
> have to resist removal without interfering with tower raising and lowering
> -- a neat trick.
>
> 2.  Another contractor I've worked with suggested I surround the tower with
> cement block, festooned with wrought iron points on top.  That would work
> pretty well, except it is very expensive and it would have to be designed
> carefully not to interfere with my tower tilt-over and my NN4ZZ tilt
> plate.  And, I'd have to have a big gate, making it a questionable
> improvement overall compared to ordinary chain link fence which is probably
> cheaper.
>
> 3.  My Force 12 6BA already has tight tolerances when I tilt over; two of
> the elements, on either side of it, barely clear the retracted tower's
> triangle.
>
> 4.  A wall that should be about 8 feet high plus spikes also has to be
> wholly outside of the tilt over "foot print" as it lowers in 3 dimensions,
> including the antenna tilting.
>
> 5.  A European technology I've seen might actually be a better solution, if
> I could find it.  It basically would be a series of downward sloping spikes
> that one would attach at, say, about 11 feet up and so be something the
> erstwhile climber could not get around.  In my case, it would have to
> include an open ring and basically be an extra standoff for the coax and
> stuff.  I like this idea, but I would have to get on a ladder to install it
> and then take it down (see clearances above) before every tower lowering.
>
> 6.  The other scheme I've dreamed up is chain link with really huge gates
> that swing entirely out of the antenna "sight lines" on lowering.
>
>
> Ideas on this?
>
>
> Larry WO7R
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