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Old September 27th 11, 07:02 AM posted to rec.radio.amateur.antenna
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Default Back yard tower advice??/

On Mon, 26 Sep 2011 22:08:23 -0700, "Sal" wrote:

"Jeff Liebermann" wrote in message
.. .
Well, if you're going to go through all that trouble to install a
proper ground, you can do as well using Unistrut instead of a 2x4.
http://www.unistrut.us


Unistrut is wonderful. About 20 years ago, I used to engineer installations
in a big government lab in San Diego and it was the customer's preferred
method for anything structural that didn't involve concrete. :-)

I learned you could do anything with Unistrut. It's the Erector Set / Lego
Blocks for grown-up kids.

"Sal"


Agreed. However, you have to be careful using Unistrut for outriggers
on towers. Unistrut doesn't do well when twisted (in torsion) by a
top heavy antenna. The only way that seems to work well on a tower
are two 1 1/2" channel Unistrut outriggers, with a connecting pipe for
mounting the antenna, dish, or whatever. A single outrigger usually
results in a the antenna twisting around in the wind. (1 1/4" will
work with light antennas).

Something like this:
http://i668.photobucket.com/albums/vv44/ahwwwjeah/My%20Tower/DSCF6120.jpg
--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
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