I'm not sure there was anything that ever really resembled a manual. My father
wa0eaf has a 10 & 15 meter Force 12 antenna from back in the day. It has 4
elements on each band with separate feeds, and no 20 meters all on one boom.
It is a good antenna - has held up well in KS weather - and is still a good
performer. We never got anything like a manual, just a drawing with some (not
all) of the dimensions. Tuning the hairpins was a nightmare of trial and error.
73,
Joe kk0sd
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Richard
Vincent
Sent: Sunday, December 06, 2015 8:36 AM
To: towertalk@contesting com
Subject: [TowerTalk] Force 12 c3 xl
Thanks everyone for the replies. I tried contacting Force 12 but was told they
don't have any records that old. I have also sent Tom an email but never got a
reply, I may have gotten the wrong email and will try again.
I put this beam up for my Elmer when he bought it. It was on top of a 82 foot
crank up with a 2 element 40 meter and an 80 rotatable dipole. These antennas
were up about a year and a half when he moved to a new QTH. At the new QTH he
decided on 2 towers and instead of using this antenna he went with stacked mono
handers. This triband has been bundled up in a shed since.
My biggest concern putting this back up is the hairpin. They are soft aluminium
tubing that have been straightened out for storage. I am assuming the longest
is for 20, next for 15, etc. What about the shape of the hairpin, shorter with
wide spacing, or longer with narrow spacing?
I plan on putting this on top of 80-90 feet of Rohn 45 with a 6 and 2 meter
beams on top. I weighed the bundles and it totaled right at 80 pounds. I would
also like to know the wind load specs. I have a Yaesu 1000 rotator but also
wondering if it will be hefty enough.
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