In a message dated 4/27/2006 12:25:57 P.M. Pacific Daylight Time,
towertalk-request@contesting.com writes:
> Some installed MonstIR's are using Orion/M^2 2800's. Alfa Spid and
ProSysTel make big rotators that would work, but they only fit
inside fairly large towers (no crankups). Not even clear they
could fit R45. Since I already have a 2800, I am probably going
to go with that for my upcoming MonstIR installation. Alfa is
going to test their big rotator for mounting on top of the tower with
the antenna right above the rotator. Results should be announced
in a month or two.
It's becoming clear that while there are sometimes problems with the rotator
itself, the emerging reliability culprit is the mast clamp. The Orion one
has so little actual clamp-to-mast surface area that it is unable to hold any
large sized array. The mast clamp on the BigBoys seem to have their limits as
well.
BTW I'm having some more suitable clamps for the Orion fabricated
and they'll be available for sale in the near future. If you're going to have
an Orion/MonstIR installation, you'll need one of these.
Cheers,
Steve K7LXC
TOWER TECH -
Professional tower services for commercial and amateur
Cell: 206-890-4188
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