Fred Cady <cady@mainman.ee.montana.edu> writes:
> I've been helping and operating at N7ML's station with the stack of Force
> 12's. As Steve, K7LXC, points out, there are 6 stacked at 30' on a 190'
> rotating Rohn 55 tower. This stack plays very well, but...
>
> I think the stacking you propose depends on what you want to do and where
> you live. For contesting, having all antennas point in the same
> direction is not a good idea. In fact, its a bad idea. You need some
> diversity and the ability to put some rf in another direction than where
> the stack is pointing. I would put the top TH7 at the top of the tower
> on a separate rotor. You will need to keep track of its direction
> relative to the rotating tower but that should be too hard to do except
> at 3 o'clock in the morning! I'm trying to convince Mike to do that with
> his top antennas on the triband and 40 stack. It would be even better to
> be able to independently rotate all three TH7's. Is there a way to turn
> the guy rings into rotating antenna mounts? Just a thought.
Would it make sense (and save on the complexity and expense of a rotating
tower) to rotate the top TH7 with a conventional rotor, and rotate the
lower one(s) with a Ringrotor or a sidemount?
I find that I frequently have my two TH7s pointing in different
directions during a contest. 73 Barry
--
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Barry N. Kutner, W2UP Internet: barry@w2up.wells.com
Newtown, PA Packet Radio: W2UP @ WB3JOE.#EPA.PA.USA.NA
Packet Cluster: W2UP >WB2R (FRC)
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