[TowerTalk] MA-550 Tubular Tower

[David Greer]

I have just installed my second free-standing,
crank-up tower made by U.S. Tower. Mine is the TX-455,
a 55-foot model. I have been pleased with the quality
and workmanship of their products. They have been
inconsistent in replying to phone calls and e-mails
though. Sometimes they do, sometimes they don't. But I
must say that when I've gotten through to them, they
were pleasant and helpful. And they seem to know their
tower stuff.

73, Dave, N4KZ




--- Richard Karlquist <richard at karlquist.com> wrote:
> Stiffness (not strength) of a tube of a 
> given wall thickness is roughly proportional
> to the *cube* of the diameter.  A pipe tower
> only 2 inches in diameter for the top 20 feet
> is nowhere near as stiff as any kind of tower
> that is 12 inches or more wide.  This is simply
> physics.
> 
> I have an MA-550 and you should have seen it
> move during the 1989 earthquake!  At least
> it stayed up.
> 
> Rick N6RK
> 
> (Note:  the actual stiffness coefficient is the
> outer diameter to the 4th power minus the
> inner diameter to the 4th power)
> 
> > -----Original Message-----
> > From: towertalk-bounces at contesting.com
> > [mailto:towertalk-bounces at contesting.com]On Behalf
> Of Ralph Danyluk
> > Sent: Sunday, July 27, 2003 2:14 PM
> > To: towertalk at contesting.com
> > Subject: [TowerTalk] MA-550 Tubular Tower
> > Importance: High
> > 
> > 
> > 
> >    Has anyone had any experience with MA-550
> tubular crank-up 
> > tower made by
> > US Tower Corporation?
> >    Comments, advice would be much appreciated.
> > 
> >    I am considering buying one - it appears to be
> a perfect fit 
> > for my site.
> >    It will support a Force-12 C-3SS.
> >    One of my questions is the amount of sway at
> the top when 
> > fully extended,
> > compared to a standard lattice tower.
> > 
> >    I phoned US Tower, but have yet to get a call
> back.   Comments 
> > on dealing
> > with US Tower will also be welcome.
> > 
> >    Thanks,
> >    Ralph - VE7AOP
> > 
> > 
> > _______________________________________________
> > 
> > See: http://www.mscomputer.com  for "Self
> Supporting Towers", 
> > "Wireless Weather Stations", and lot's more.  Call
> Toll Free, 
> > 1-800-333-9041 with any questions and ask for
> Sherman, W2FLA.
> > 
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk at contesting.com
> >
>
http://lists.contesting.com/mailman/listinfo/towertalk
> > 
> _______________________________________________
> 
> See: http://www.mscomputer.com  for "Self Supporting
> Towers", "Wireless Weather Stations", and lot's
> more.  Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
>
http://lists.contesting.com/mailman/listinfo/towertalk


=====
David Greer

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