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Re: [TowerTalk] [Antennas] Carbon Fiber Boom

To: "Richard (Rick) Karlquist" <richard@karlquist.com>,Jeffrey Okamitsu <jokamitsu@yahoo.com>
Subject: Re: [TowerTalk] [Antennas] Carbon Fiber Boom
From: Pat Barthelow <aa6eg@hotmail.com>
Date: Fri, 9 Nov 2007 22:30:00 -0800
List-post: <mailto:towertalk@contesting.com>


3 years back, I worked on marine electronics aboard the Derek Baylis, a 
special, twin masted 65 ft  Sailing Research Vessel. Ketch rigged,   unusual 
for its carbon fiber masts which needed no stays, shrouds,  etc aloft.   
Extremely fast.
We serviced the masts one time, so I saw them horizontal in the shipyard.  
Awesome.  and Awesomely expensive.  probably  > $100K per mast.  But,  you can 
check with Wylie boats out of Watsonville CA to find the manufacturer of the 
masts.  They could probably quote for smaller carbon fiber tubes, structures 
such as Antenna Booms, flagpoles, etc.
See the beautiful Baylis:   
http://www.baycrossings.com/archives/2003/09_October/derek_m_baylis_sails_sf.htm

All the Best, 73,
Pat Barthelow     aa6eg@hotmail.com
http://www.jamesburgdish.org
Subscribe: http://bambi.net/jamesburg.html
Jamesburg Earth Station  Moon Bounce Team




> Date: Fri, 9 Nov 2007 21:45:02 -0800
> From: richard@karlquist.com
> To: jokamitsu@yahoo.com
> CC: towertalk@contesting.com; Antennas@mailman.qth.net
> Subject: Re: [TowerTalk] [Antennas] Carbon Fiber Boom
> 
> There is a lattice tower made of carbon fiber.  You can
> raise at least 300 ft of it in one piece, due to the
> high strength to weight ratio.  I think it was discussed
> on the towertalk reflector, check the archives.  Of
> course, the price is equally impressive.
> 
> Rick N6RK
> 
> Jeffrey Okamitsu wrote:
> > Has anyone ever thought about using carbon fiber
> > composite as boom material for a really big array?
> > 
> > Strength to weight ratio of the material is, of
> > course, fantastic.  However...it would be very
> > expensive.
> > 
> > I'm interested to hear if anyone has attempted
> > something like this.
> > 
> > 73, Jeff W3KL
> > 
> > 
> >        
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