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
Antennas".
73 and good luck, Steve K7LXC
TOWER TECH -- professional tower supplies and services for amateurs
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