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[TowerTalk] mechanical construction of 80m vertical

To: <>
Subject: [TowerTalk] mechanical construction of 80m vertical
From: (Jim Hill)
Date: Sat Mar 22 02:44:31 2003
Could be, but N6RK, what is the wall thickness of the tubing you 
used?  Next time I'm in that area, I'll stop by, talk to them again and get 
more info.
73's Jim

At 08:03 PM 3/21/2003 -0600, you wrote:
>The stuff I saw on the rainforrent Web site seems entirely unsuited to large
>vertical antennas. They call it lightweight aluminum, which would suggest
>its designed to cross horizontal spans and be supported at regular
>Seems to me the cheapest solution is to simply build a non-conductively
>guyed tower using used bits. I think 40 or even 50 feet of guyed GN or
>whatever is available, topped with an appropriately sized stinger (or
>top-loading of some description) would not be that difficult or costly,
>compared with trying to engineer complicated plastic towers or risking
>mechanical failure by failing to get proper materials. It's probably even
>easier when you consider the nightmare that trying to get flimsy tubing
>vertical would be. It would be like pushing on a string. Shouldn't be too
>hard to either insulate from base or feed with a gamma.
>You can often get GN for free just by taking it down for someone who no
>longer uses it. Properly inspected, there's no reason it couldn't continue
>to provide years of service. Even if you had to order it from RS, I think
>the sections are still cheaper than Chris's estimated shipping costs plus
>material. Looking at the TT web page, even if he started with 2.125 OD drawn
>tubing, that's $3.50 US per foot, or almost $150 Cdn (assuming a 20-foot
>first section and including shipping). Heck, 2 sections of GN new won't cost
>that and the tubing vertical would still need to be guyed.
>I would worry that trying to be frugal on this project will end up being
>more expensive, particularly if it results in personal liability claims.
>Probably best to do it right or not at all.
>73, kelly
>----- Original Message -----
>From: "Jim Hill" <>
>To: <>
>Sent: Friday, March 21, 2003 4:45 PM
>Subject: RE: [TowerTalk] mechanical construction of 80m vertical
> > Finding tubing isn't easy.  I've stopped at a number of businesses in
> > farming areas with little luck. plastic tubing seems to be currently used.
> > However, the following store in Bakersfield CA  is a good choice:
> >
> > The Irrigation Store, 4001 State Road, Bakersfield, CA 93303  661-4421 or
> > 800-742-7246. Their web site is:  Their web
> > site shows tubing with end connections, but I thought I saw just plain
> > when I visited them.  The web site also shows stores at other locations.
> >
> > 73's Jim
> >
> > _______________________________________________
> >
> > See:  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.
> >
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> >
>See:  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

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