YUP...our emergency command vehicles have 60ft pneumatic mast and each tube
has two pins. The entire weight of the mast rest on two pins with a surface
area of less than a 1/2 inch square (that includes the surface area for both
pins).
These towers are designed to carry heavy loads 100s of lbs and also be
guyed.
73,
Dave
Wa3gin
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Joe Subich, W4TV
Sent: Thursday, May 08, 2008 10:04 AM
To: wc1m@msn.com; towertalk@contesting.com
Subject: Re: [TowerTalk] Experience with MA550 tower
> It also doesn't appear to have any
> support pins. I don't know where I got that idea. Maybe
> someone told me about a tubular tower that had such a
> mechanism and I got it mixed up with the 77B. Sorry.
Commercial/Military masts made by Wil-Burt are available with
locking pins and guyed versions for large antennas/tall heights.
They are often used for COW (cell on wheels) and tactical military
microwave as quick deploy, temporary facilities.
73,
... Joe, W4TV
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