Ray,
I have short (50') tower with a CC A3S and rotatable KLM 40-1 dipole on top. On
that tower
I also have three 70ft. slopers with a remote switch and SGC tuner so that I
can use
them on multiple bands. I don't know if they interact as you ask, but they do
have a
definite pattern especially on the upper bands. The unused slopers are open
circuit so
they act somewhat as reflectors to the one in use. I doubt there is much gain
in the
favored direction but there is some front to back that is helpful at times. On
80 they are
not quite as good as my HyTower setup. On 40m they show a little pattern but
are not
as good usually as the dipole. Same goes for 20, 15 and 10 where the beam is
definitely
better. They work really well on 17 and 12. I think they are slightly better on
17 than the
40M dipole.
Just my experience - ymmv.
Rod w7zrc
________________________________
From: Ray Benny <rayn6vr@cableone.net>
To: TowerTalk@contesting.com
Sent: Saturday, July 2, 2011 2:08 PM
Subject: [TowerTalk] Question on multiple slopers on a tower
Not sure if this is the proper reflector to ask about slopers. But here
goes.
I have a 70ft tower with a single 80m sloper on it. I move the end if it
around to point in the direction I want to work in the world. It works
great!
I am re-doing the yagis on this tower and have thought about adding other
80m slopers in different directions thru a remote coax switch. My question,
to get full directional coverage, do I need 4 slopers 90 degrees apart, or
are slopers broad enough that I can use three? If they radiate in about 60
degree beam width, I would need four, one each for ZL/VK, JA, EU, and SA
which are about 90 degrees steps from each here in AZ.
Any experience with multi slopers? Will they interact?
Tnx,
--
*Ray,*
*N6VR*
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