On Mon, 02 Sep 1996 06:38:55 -0700 jrob@epix.net writes:
>Howdy all,
>
> I am thinking about putting up an array of slopers on the tower.
>The attached heighth would be about a quarter wave and a descent
>amount
>of radials would be attached to tower base. Are there possibly people
>here that run 4 slopers off their tower to a switchbox that could give
>me some indication on this installation compared to others....say an
>inverted vee or a vertical??? Is there much interaction between them?
>Are they very hard to tune? Is it really worth my trouble? Any
>helpful
>answers would be appreciated. The band I intend to use these on is 80
>meter phone. If I put an inverted vee for 160 above it.....any
>problem?
>And finally,on these slopers, what would be the easiest way to get use
>out of them on the cw part of the band,too? Lots of questions, but I
>know their are many intelligent antenna people out here who could lead
>me in the direction thats easiest and best for me! 73 de Jeff,N3MLV.
>
Hi Jeff,
Slopers are highly dependent upon the tower, what antennas
are on and near the tower, and ground conductivity. I would
recommend computer modeling to see how your proposed configuration
would work.
I was surprised to see, when I modeled my single sloper setup,
that by far the highest currents were in the tower itself and
that the pattern was omnidirectional within 1 dB in the azimuth
plane. I used ELnec software for modeling.
I have a ceramic switch in the low end of the sloper that is
accessible from a stepladder to add a short pigtail for the cw
end of the band.
Dave, K6LL
k6ll@juno.com
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