I'd be very much interested in the same info, plus height of the mast
clamps. Will the rotor fit a hole pattern drilled for Hy-Gain rotors?
73, Dick, WC1M
-----Original Message-----
From: Dave Hawes <n3rd@ix.netcom.com>
To: towertalk@contesting.com <towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: Monday, July 06, 1998 9:16 PM
Subject: [TowerTalk] Orion 2800 - Need info
When we lost the reflector on the 3 element 40 meter beam at N3RS
(full size, old Hygain 403B Long John), the resultant imbalance was
too much for the rotator, which has bitten the dust. In fairness,
the rotator, an Emoto 1300 MSAX, had performed flawlessly for about 4
years. No complaints. It is just not designed to restrain a large
weather vane, as it was asked to do when the reflector came off the
beam (another story).
Repair of the Emoto is an option, but we are also considering the
Orion 2800. As with any retrofit, installation difficulty depends
upon how much rework of the existing hardware will need to be done.
To determine this, we need the following information for the Orion
2800:
1. Dimensions/geometry of the hole pattern for the rotor mounting
shelf. (This will tell us if we need to drop the shelf for
redrilling. Incidentally, we understand that a new version of the
2800 will be introduced shortly that has six mounting bolts versus
the present four. For now, any information at all would be helpful
in this regard.)
2. Height from bottom of rotator to bottom of mast, assuming that
the mast settles down in the clamp and rests on the top of the
rotator. (This will tell us if we need to move the shelf up or down
from its current location. The tower is AB-105, so to relocate the
shelf will require drilling some new holes in the AB-105 verticals.
Cutting the mast is not an option for this particular installation.)
We have requested this information from M-Squared (e-mail and two
telephone calls), but so far all we've managed to get is a brochure,
which gives none of the necessary information. You wouldn't think it
would be this hard to get simple information.
Textual data would be very helpful. A scanned image of the
dimensioned drawings would be even better. (The M-Squared web page
has a drawing of the 2800, but no dimensions of use.)
Any help anybody?
Thanks in advance.
73 - Dave, N3RD
Co-Captain, N3RS Contesting Team
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