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Author Topic: mast comparisons  (Read 416 times)
N4UE
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Posts: 292




Ignore
« on: August 21, 2002, 04:18:36 PM »

I know this topic has probably been run into the ground, but I havn't seen any of it.

I have had some experiences with stacking large VHF antennas and would like your comments.
I tried Schedule 40 water pipe. In addition to being real heavy, it bent (45 degrees)(both towers). Now, I understand that it is not designed for side loading but we all know we are cheap.
I replaced said pipe with 6061-T6 aluminum. I have to say, that I was very skeptical!. Those beams swayed in the wind, but never, ever bent. I still have a 10' and 20' section (1 1/2" o/s, .250" wall).
I am going to erect an even bigger array at the new house and found a supplier of the al mast. Although it's $, I only want to do this once. A really (really) stout piece of 6061 (2" o/s, .375" wall, 24' lond) is $400 without shipping.......
I am not braging, but I'm an acomplished TIG welder with the necessary tools. I have built a lot of race car suspension parts with chrome moly but have never used it for masting. Anyone have any comments?
I guess I'm concerned about the mast weight/cost. I would have no problems splicing either, but would rather not!

thanks,

ron
N4UE
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