[TowerTalk] Need to identify aluminum tower

[Joe Subich, W4TV]

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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