I agree with Joe. I know the tower resembles something that I've seen, but it's
been over 25 years since I finished 27 years of military service.
73 es DX,
Gary - AB9M
Sent via the Samsung Galaxy Tab® 3 Lite
-------- Original message --------
From: "Joe Subich, W4TV" <lists@subich.com>
Date:07/24/2016 7:06 PM (GMT-06:00)
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Need to identify aluminum tower
The guy wire assemblies are a military design (used on the AB-577 and
AB-621 that I'm aware of). I suspect the tower is military surplus
based on the use of the SM-D-423650/423651 guy assemblies and the
captive pin junction design.
Any design specifications would be buried deep in military procurement
- if you can find them <G>.
73,
... Joe, W4TV
On 7/24/2016 3:43 PM, EZ Rhino wrote:
> I like the design too, but haven't ever seen it before. It looks like it may
> have been intended as a temporary/portable type set up with the shorter
> sections and the pins that are attached with wire lanyards. Let us know what
> you find out.
>
> Chris
> KF7P
>
>
> On Jul 24, 2016, at 11:24 , JVarney wrote:
>
> I'm not familiar with this tower, but at first glance this looks to
> be an excellent design for aluminum, very intriguing. One,
> the mechanical collars for the brace joints are so much
> better than welding as it avoids the large strength reduction
> (over 50%) due to the loss of temper in the heat affected zone.
> Two, the use of round legs and round braces -- much, much
> better than angle shapes, which vary in strength depending
> on load direction and are prone to local buckling. Three, the
> use of collars for the brace joints avoid the loss of strength
> due to drilling a hole in the leg for a bolt.
>
> A formal analysis would have to be done but I would not
> be surprised if this design turns out to be one the most
> efficient uses of aluminum for a tower possible.
>
> 73 Jim K6OK
>
>
> Jeff Liebermann wrote:
>
>>> JV (K6HJU) obtained a rather odd aluminum tower and needs
>>> help identifying the manufacture in order to obtain a spec
>>> sheet. ... GALCO 13-199ASSY786G420-110
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