Yaesu G-1000DXC Bedienungsanleitung Seite 3

G-1000DXC/G-2800DXC
Heavy-Duty Antenna Rotator & Controller
The Yaesu G-1000DXC and G-2800DXC are designed
to rotate large tower-mounted amateur and professional
antenna arrays under remote control from the station
operating position. The clamshell rotator design utilizes
100 7/16-inch dual-stacked circumferential ball bearings
to distribute load over the full diameter of the housing.
This design minimizes stress and wear, and practically
eliminates the possibility of destructive water entry: there
is no shaft hole in the top of the housing.
Instead of the usual AC motor drive used in older rotator
designs, the G-1000DXC and G-2800DXC use a vari-
able-voltage DC motor, obviating the need for a large
starting capacitor with its potential for failure exposed
to outside temperature variations. The factory-lubricated
rotator unit is housed in melamine resin-coated die-cast
aluminum, intended to provide maintenance-free opera-
tion under all climatic conditions. A mast alignment gauge
on the rotator housing simplifies accurate mechanical
alignment during installation.
The handsome desktop controller matches the design of
modern transceivers, providing 360° radial indication of
actual antenna bearing azimuth. You can select rotating
speeds from 40 to 100 seconds per (360°) rotation (G-
1000DXC, G-2800DXC: 50 to 120 seconds per (360°)
rotation), and can preset a desired heading for the rota-
tor, to which it then turns automatically.
In the G-2800DXC model, when a fast rotating speed is
selected, special "auto slow start" and "auto slow stop"
G-1000DXC/-2800DXC User Manual
features avoid sharp jolts to the antenna array and tower.
Activating the rotator causes it to begin turning at slow
speed. As the antenna approaches the desired heading
rotation automatically slows before bringing the antenna
to a gentle stop. The operator may select the stopper
heading (the bearing through which the rotator cannot
be turned) most convenient for his location and opera-
tion, allowing full rotation through north, south or both,
if desired. In any case, 90° overlapping rotation allows
rotation through the selected stopper heading (450° to-
tal rotation).
The rotator is intended for mounting inside a support
tower (not supplied), at least 1 meter from the top, with
an optional (Yaesu model GS-680U) thrust bearing
above. This kit includes one mast clamp and related hard-
ware, plus plug connectors for both the rotator and con-
troller to simplify installation and servicing. The G-
40MWP 40 m length Control Cable is optional.
The GS-232A Computer Control Unit is available as an
option, allowing positioning of the antenna by a personal
computer, via an RS-232 serial interface.
Please read this manual through carefully before install-
ing the rotator, to acquaint yourself with the procedures
that will be required, and to ensure that you have all nec-
essary items for your installation.
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