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Subject: Hello!
From: (
Date: Tue, 4 Jun 1996 11:36:43 -0400
In a message dated 96-06-04 09:59:42 EDT, you write:

>The torque introduced by a sidearm with a mid-sized Yagi seems to be 
>quite a bit. I don't recall seeing any twisting moment specs in the ROhn 
>catalog. Do you have any info on this? 73 Barry
Hi, Barry --

     I don't recall offhand seeing any sidemount forces in the Rohn book
specifically relating to sidemounted antennas.  I'll wade through it again if
I get a chance.

    The best analysis of sidearm stress was done by Dick Weber, K5IU, and
appeared in the DX Magazine, Sept/Oct 1995.  Chod may be able to supply you
with a back issue.  If not, let me know and I can mail you a copy.  It's
called "Torque Requirements for Side-ARm and Ringrotor Mounted Yagi

73 and good luck,  Steve  K7LXC

    TOWER TECH -- professional tower supplies and services for amateurs

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