[TowerTalk] AB-252, AB-253, AB-254, AB-255, AB-256, AB-257 aluminum military masts info wanted

[Doug Ronald]

I have many AB-621G portable tower kits I purchased government surplus which
I tried to sell a few years ago for scrap aluminum prices. Understandably,
no one wanted to foot the shipping. They extend in 6 foot sections, to 50
feet, guyed of course, with the tubes 6 inches in diameter. I have the
complete tech orders which I found on the web someplace if you wish any
further details on that particular tower.

-Doug AE6SY

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
Richard (Rick) Karlquist
Sent: Sunday, July 06, 2014 7:46 PM
To: towertalk reflector
Subject: [TowerTalk] AB-252, AB-253, AB-254, AB-255, AB-256, AB-257 aluminum
military masts info wanted

Looking for info on this series of mast sections.
I bought them at a swap meet and have no info except that the sections are
badged with the above model numbers.
Each is 9 feet long, plus an insert into the next section.  They appear to
be designed to work together as a tapered mast.

Also looking for info on 5 foot sections of aluminum military mast in 3 inch
and 4 inch diameter.  The 4 inch sections have "spline" connections.  Also
obtained at a swap meet.  These are something like the 2 inch ones you see
all the time, only larger.

All of these are the usual olive drab color.

Has anyone seen a PSI stress limit for whatever the aluminum alloy is that
they used for military masts?

Rick N6RK
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