[TowerTalk] 40 Meter Vertical Construction

[Tom Horton]

Copper pipe at the hardware stores is fairly inexpensive and
it's been said to be a pretty good conductor...hi
73, Tom K5IID



At 06:15 11/08/03, Gary K9GS wrote:
>Hi Jim,
>
>I really doubt the extra resistance makes much difference.  A lot of hams
>use steel tower sections for verticals...they work well.  Check out this
>link:
>
>http://www.qsl.net/k9ns/outk9ns4.html
>
>Both the 80 and 160M 4 squares use Rohn 25.  Plus, with aluminum tubing you
>are looking at having several aluminum-aluminum joints vs. only one with a
>steel top rail.  I'd be willing to bet that the actual resistance over a 32
>foot long piece of either is probably not a measurable difference.
>
>I think the last time I looked the 21' top rails at HD were something like
>$12 each.
>
>
>73,
>  Gary
>
>  ++++++++++++++++++++++++++++++++++++++++++++++++
>   K9GS
>   Gary Schwartz           email: k9gs at arrl.net
>   Check out K9NS on the web    http://www.qsl.net/k9ns/
>   Society of Midwest Contesters (SMC)     GMDXA
>  ++++++++++++++++++++++++++++++++++++++++++++++++
>
>
>----- Original Message -----
>From: "Jim Lux" <jimlux at earthlink.net>
>To: <towertalk at contesting.com>
>Sent: Friday, November 07, 2003 11:59 PM
>Subject: Re: [TowerTalk] 40 Meter Vertical Construction
>
>
> > Perhaps because it's steel, which isn't as good a conductor as aluminum
> > ----- Original Message -----
> > From: "Gary K9GS" <GaryK9GS at wi.rr.com>
> > To: "Macie, Gordon" <GMacie at innotrac.com>; <towertalk at contesting.com>
> > Sent: Friday, November 07, 2003 9:28 PM
> > Subject: Re: [TowerTalk] 40 Meter Vertical Construction
> >
> >
> > > Hello Gordon,
> > >
> > > Why not use chain link fence top rail instead?  It comes in several
> > > different sizes, is cheap, galvanized, comes in 21' lengths (1  1/2
>pieces
> > > do the job) and they are swaged on one end.
> > >
> > > Check them out at Home Depot.  If you think you need something different
> > > than what they carry look in the yellow pages for a chain link fence
> > dealer.
> > >
> > > 73,
> > >  Gary
> > >
> > >  ++++++++++++++++++++++++++++++++++++++++++++++++
> > >   K9GS
> > >   Gary Schwartz           email: k9gs at arrl.net
> > >   Check out K9NS on the web    http://www.qsl.net/k9ns/
> > >   Society of Midwest Contesters (SMC)     GMDXA
> > >  ++++++++++++++++++++++++++++++++++++++++++++++++
> > >
> > >
> > > ----- Original Message -----
> > > From: "Macie, Gordon" <GMacie at innotrac.com>
> > > To: <towertalk at contesting.com>
> > > Sent: Friday, November 07, 2003 04:17 PM
> > > Subject: [TowerTalk] 40 Meter Vertical Construction
> > >
> > >
> > > > I am building a 40 meter 4-square. I have decided to build it with
> > > aluminum
> > > > from Texas Towers. The bottom section will be 1.625 and reduce 1/8 per
> > > > section above that with the top peice being .875. How much do I need
>to
> > > > overlap or telescope into each section for mechanical strength ??.. I
>am
> > > > thinking 6 to 12 inches.
> > > >
> > > > Blurb below from Texas Towers web site.
> > > > 6063-T832 Drawn Aluminum Tubing
> > > > Typical yield strength of 40,000 psi. The chart shows all available
> > > > telescoping sizes which are specifically designed to fit together
> > > precisely,
> > > > making antenna construction easy, while offering professional results.
> > > >
> > > >
> > > > Gordon N4LR
> > > > n4lr at arrl.net
> > > >
> > > > _______________________________________________
> > > >
> > > > 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
> >
> > _______________________________________________
> >
> > 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

"E"  Sorter for the ARRL W5 QSL Bureau
Williamstown, WV