Subject: Re: [Antennas] Telescoping Aluminum Tubing

[Chris BONDE]

Didnot someone here talk about pulling up a vertical of about 60ft by using 
a tall tree?

I have been thinking about a method of pulling part of the telescoping part 
up by itself.  Now how do the telescoping antennas for cars work? This I 
have been trying to find out.

  I think that the stain on the 'walking' up may prove too much.  I tried 
on some of my putting together of a mast of various pipes.  Put a small 
kink in one section.

Chris opr VE7HCB



At 09:34 PM 2002-01-03 -0800, you wrote:
>Thanks to all for the useful information my post generated.
>Assuming I purchase 6' lengths of 6063-T832 drawn aluminum tubing (the 
>tubing where each size telescopes into the adjacent sizes) from Texas 
>Towers, how high a vertical do you think I could erect with one person 
>walking the tubing up and another person holding the bottom on the ground? 
>If I purchased each size and telescoped them with a 1' overlap, I 
>calculate I would have a 76' length.  Assuming the tubing didn't buckle, I 
>think erecting it would be a big problem.  I would like to be able to 
>erect an 80 meter vertical, which ideally would be around 60' high. Those 
>of you who erected 40' antennas,  could you have gone higher without 
>serious difficulties? What was the maximum size tubing you used?
>Thanks, Jim, w6ivw
>_______________________________________________
>Antennas mailing list
>Antennas@mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/antennas