jrob@epix.net wrote:
>
> Howdy all,
>
> I wonder what people use for mast that sticks up about 10 or so
> feet above the tower and holds more than one multiband antenna?
> I put up 1 1/2" galvanized steel pipe and it failed......bent right
> over. Wow!
> If I use 1 1/2" galvanized steel again,only this time schedule 80,
> which is 1/4" wall thickness,is that sufficient? And if that is
> sufficient, what would be the difference between steel or aluminum pipe
> if they both are the same thickness?I don't have time for this "chrome
> molley" or whatever it is as this must be changed immedietly, no time to
> wait for freight! One last question, I also suppose I could use 2"
> instead of 1 1/2", but adding all this more weight,is it really going
> to add all that more strength? Helping answers appreciated!!!
> Jeff,N3MLV
>
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Jeff, I see your from PA. I dont know how far you are from Baltimore,
but there are all kinds of steel suppliers there. What you want is,
2" x .250 wall tubing. You can also get it in .375 wall. If Baltimore
is to far for you to drive, you can look in your phone book under
steel fabricators and let them order it for you. They should have it
for you in a couple of days. Make sure its tubing, not pipe. I don't
have any experience with aluminum masts but, I know it can get stress
cracks from repeated movement. So, I would think the wind rocking it
around could cause this. There should be others on here that can tell
you more about aluminum then I can. Hope this helps.
Bill
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
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Sponsored by Akorn Access, Inc & KM9P
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