Yaesu G-800DXA User manual

G-800DXA
G-1000DXA
G-2800DXA
Antenna Rotator & Controller
User Manual

Important !
The installation of a rotatable antenna on a tower system is a dangerous and potentially life-threatening task, if due care is
not taken.
A tower must never be installed in a position where it could fall across power distribution cables in the event of a cata-
strophic tower failure during a windstorm or earthquake.
The control cable attached to this rotator could, in the event of a nearby or direct lightning strike, carry lethal voltages down
the cable and into your home. Yaesu strongly recommends the installation of suitable lightning arrestors on all control
cables and coaxial lead-in cables from your antenna installation. See your dealer for details of available lightning-protection
devices.
If an electrical storm should be reported in your area, quickly unplug the control cable from the rear of the rotator's control-
ler box, and disconnect the AC cable from the wall outlet. Disconnect the coaxial cable(s) from the antenna(s) as well. Do
this only if the lightning is not in your immediate area, as you could be killed instantly if lightning should strike while you
are holding a cable.
If you have any doubts about your ability to install this rotator safely, enlist the services of a professional antenna installa-
tion company.

1
G-800DXA / -1000DXA / -2800DXA User Manual
The Yaesu G-800DXA, G-1000DXA and G-2800DXA are designed to rotate large tower-mounted amateur and profes-
sional antenna arrays under remote control from the station operating position. The clamshell rotator design utilizes 98 3/8-
inch dual-stacked circumferential ball bearings to distribute load over the full diameter of the housing. This design mini-
mizes 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-800DXA, G-1000DXA and G-2800DXA use a
variable-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 operation under all climatic conditions. A mast alignment gauge on the rotator housing simpli-
es 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-800DXA and G-
1000DXA, G-2800DXA: 50 to 120 seconds per (360°) rotation), and can preset a desired heading for the rotator, to which
it then turns automatically.
In the G-2800DXA model, when a fast rotating speed is selected, special “auto slow start” and “auto slow stop” features
avoid sharp jolts to the antenna array and tower. Activating the rotator causes it to begin turning at slow speed. As the an-
tenna approaches the desired heading rotation automatically slows before bringing the antenna to a gentle stop. The opera-
tor may select the stopper heading (the bearing through which the rotator cannot be turned) most convenient for his location
and operation, allowing full rotation through north, south or both, if desired. In any case, 90° overlapping rotation allows
rotation through the selected stopper heading (450° total 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.
The G-800DXA and G-1000DXA includes one mast clamp and related hardware, plus plug connectors for both the rota-
tor and controller. A six conductor cable of the necessary length must be supplied by the owner. The G-2800DXA model
includes one mast clamp and related hardware, plus a 40 m length control cable, to simplify installation.
The GS-232B Computer Control Unit is available as an option, allowing positioning of the antenna by a personal com-
puter, via an RS-232 serial interface.
Please read this manual through carefully before installing the rotator, to acquaint yourself with the procedures that will be
required, and to ensure that you have all necessary items for your installation.

2G-800DXA / -1000DXA / -2800DXA User Manual
Controller Front Panel
ÀPOWER switch
Press this switch to turn the controller on to rotate the
antenna. Turn it off when the rotator is not in use.
ÁLEFT/RIGHT Seesaw Switch
Press the LEFT side of this switch to rotate the anten-
na counter-clockwise (CCW). Press the RIGHT side
to rotate the antenna clockwise (CW).
ÂPRESET Control and START Switch
Set the PRESET control to the desired antenna
heading according to the outer angular scale (180 ~
270) around this control, then press the (momentary)
START switch to activate automatic rotation to the
desired heading. You can press the LEFT/RIGHT
switch to abort preset operation.
Note: If you change the rotator starting position to
the 0° (N: North), set the PRESET control to
the desired antenna heading according to the
inner angular scale (0 ~ 90) around this con-
trol.
ÃSPEED Control
Set this control for the desired rotating speed between
approximately 30 and 100 seconds per 360° revolu-
tion.
ÄOVERLAP Indicator
This red LED glows when the antenna is rotated
beyond about 180° (to 270°) from its original instal-
lation direction (180°). Check this indicator before
rotating the antenna clockwise, and turn the antenna
counter-clockwise to the desired position if the indi-
cator is on.

3
G-800DXA / -1000DXA / -2800DXA User Manual
Controller Rear Panel
ÀEXT CONTROL Connector
This 6 pin mini-DIN connector is used for connection
to the optional GS-232B Computer Control Unit.
ÁSELECT SWITCH
Set this switch to the “ADJ. MODE” position while
calibrating the internal adjustments of the controller.
During normal operation, however, set this switch to
the “OPERATION MODE” position.
ÂFULL SCALE ADJ Potentiometer
This control calibrates the maximum rotation angle
(range) of the azimuth indicating needle to match the
maximum angle of the rotator.
ÃOVERLAP LED ADJ Potentiometer
This control calibrates the OVERLAP Indicator to
match the azimuth indicating needle.
ÄPRESET ADJ (A& B) Potentiometers
These controls calibrate the angle of the PRESET
control on the front panel to match the azimuth indi-
cating needle. Pot. Ashould be adjusted only near the
180 ｰposition, and Pot. Bonly near the 270° (450°)
position.
ÅOUT VOL ADJ Potentiometer
This control presets the voltage range at pin 4 of the 6
pin mini-DIN EXT CONTROL Connector, for cali-
bration of the A-to-D converter on the (optional) GS-
232B Computer Control Unit.
ÆRotator Control Cable Jack
The control cable from the rotator connects to this 6
pin jack.
ÇFUSE Holder
This holder requires a 2 A fuse for 117 V AC, and a
1 A fuse for 220 V AC. If the fuse is blown, replace
only with a fuse of the same rating.
ÈAC Cable
Connect this cable to the AC mains supply or wall
outlet. The AC line voltage must match that on the
label.
YAESU MUSEN CO., LTD.

4G-800DXA / -1000DXA / -2800DXA User Manual
Antenna Considerations
The types of antennas that can be attached to this product differ widely, depending on the installation method, local terrain,
and the maximum expected wind speeds at your location.
The following pages described typical antennas which are acceptable for installation with the G-800DXA, G-1000DXA or
G-2800DXA. The discussion below assumes maximum wind speeds of 30 meters per second, and it is recommended that
you include a safety margin of at least 40 % to account for higher wind gusts or other factors which might potentially cause
damage to your installation.
Pole-Mounted Antennas
Mounting of the rotator on a pole or mast results in a signicant de-rating of the size of the antenna which can be mounted,
due to the tremendous bending forces applied to the rotator’s clamps. For pole mounting, the product of multiplying the
[Antenna Wind Load Area (in m2)] by the [Height of the Antenna Mast (in m)] must be less than 0.45 (G-800DXA/-
1000DXA) or 0.8 (G-2800DXA). See below Table and Figure.
[Antenna Wind Load Area] x [Height of Antenna Mast] = 0.45 (G-800DXA/-1000DXA)
0.8 (G-2800DXA)
Refer to the antenna manufacturer’s specication sheet for determining the weight and the surface area of the proposed an-
tenna.
Example: For a 14 MHz 3-element Yagi of Surface area of 0.7 m2 (see Table), the above specications for pole mounting
will be met if the antenna is mounted on a mast not longer than 0.3 m (0.7 m2x 0.3 m = 0.21 < 0.27 [0.45 x 40
% safety margin]: G-800DXA/-1000DXA), or 0.6 m (0.7 m2x 0.6 m = 0.42 < 0.48 [0.8 x 40 % safety mar-
gin]: G-2800DXA).
Advice: We recommend that your antennas/mast should not exceed 60 % of the maximum rating, to ensure a safety
margin.
Less than 0.3m (G-800DXA/-1000DXA)
Less than 0.6 m (G-2800DXA)
Optional Mast Clamp
GC-038 (for G-800DXA/-1000DXA) or GC-048 (for G-2800DXA)
Example of a 14 MHz Band, 3-Element Yagi Antenna
Wind Loading Areas for Common Antennas (Typical)
Band
(MHz) Elements Area (m2)Band (MHz) Elements Area (m2)Band (MHz) Elements Area (m2)
7 2-element 2.2 28 3-element 0.3 50 4-element 0.25
7 1-element, w/loading coils 0.2 28 4-element 0.42 50 5-element 0.3
7 2-element, w/loading coils 0.5 28 5-element 0.6 50 6-element 0.37
7 3-element, w/loading coils 1.1 28 2-element, Swiss Quad 0.3 50 2-element, Swiss Quad 0.3
14 3-element 0.7 7/14 3-element, trapped 0.5 144 10-element 0.2
14 4-element 1.2 7/14 4-element, trapped 0.8 144 10-element, stacked 0.44
14 5-element 1.7 14/21 3-element, trapped 0.4 144 10-element, x 4 0.95
21 3-element 0.45 14/21 4-element, trapped 0.5 144 10-element, x 4 x 2 2
21 4-element 0.6 21/28 4-element, trapped 0.3 430 12-element 0.06
21 5-element 0.8 21/28 5-element, trapped 0.4 430 12-element, stacked 0.12
21 6-element 1.3 14/21/28 3-element, trapped 0.4 430 12-element, x 4 0.3
21 2-element, Swiss Quad 0.3 14/21/28 4-element, trapped 0.5 430 12-element, x 4 x 2 0.6

5
G-800DXA / -1000DXA / -2800DXA User Manual
Antenna Considerations
Tower-Mounted Antennas
In the preferred tower-mounting conguration, the antenna Wind Loading Area must be less than 2 m2(G-800DXA), 2.2
m2(G-1000DXA) or 3 m2(G-2800DXA), and the “K” factor (see below) must not exceed 180 (G-800DXA), 230 (G-
1000DXA) or 950 (G-2800DXA), where K= [Antenna Turning Radius (m)] x [Antenna + Mast Weight (kg)].
MODEL “K” Factor Wind Loading Area
G-2800DXA 950 3m2
G-1000DXA 230 2.2m2
G-800DXA 180 2m2
Refer to the antenna manufacturer’s specication sheet for determining the turning radius and weight of the antenna.
Example: In this example, mount the following antennas stacked on a 6 kg mast.
(1) 14/21/28 MHz 5-element Yagi of Turning Radius 5.6 m, Weight of 26 kg, and Surface area 0.7 m2
(2) 18 MHz 3-element Yagi of Turning Radius 5.0 m, Weight of 14 kg, and Surface area 0.7 m2
(3) 50 MHz 5-element Yagi of Turning Radius 2.6 m, Weight of 5 kg, and Surface area 0.3 m2
Note: In such “Christmas Tree” installations, compute the mast weight separately for each antenna, using the relative
heights of the antennas to apportion the mast weight.
The antenna system Kfactor, then, is the sum of the three antenna Kfactors:
K1= Kfactor of 14/21/28 MHz 5-element Yagi.
K1= Turning Radius (5.6 m) x Weight (26 kg + 2 kg) = 156.8
Antenna Weight
Mast Weight (6 kg/3)
K2= Kfactor of 18 MHz 3-element Yagi.
K2= Turning Radius (5.0 m) x Weight (14 kg + 2 kg) = 80
Antenna Weight
Mast Weight (6 kg/3)
K3= Kfactor of 50 MHz 5-element Yagi.
K3= Turning Radius (2.6 m) x Weight (5 kg + 2 kg) = 18.2
Antenna Weight
Mast Weight (6 kg/3)
KTOTAL = K1+ K2+ K3= 156.8 + 80 + 18.2 = 255
The antenna system Wind Loading Area is: 0.7 m2+ 0.7 m2+ 0.3 m2= 1.7 m2
The Wind Loading Area (1.7 m2) is within the specications for the G-800DXA, G-1000DXA and G-2800DXA, but the
net Kfactor (255) can only be met by the G-2800DXA. Therefore, the above antenna system should only be mounted us-
ing a G-2800DXA.
Advice: We recommend that your antennas/mast should not exceed 60 % of the maximum rating, to ensure a safety mar-
gin.
Mast Bearing GS-065 (option)
Note: Installation of a Thrust Bear-
ing such as the GS-065 does
not allow the elimination of the
mast weight from the K-factor
calculations above.
Sq. Ft m2Sq. Ft m2
1 0.093 12 1.115
2 0.186 13 1.208
3 0.279 14 1.301
4 0.372 15 1.396
5 0.465 16 1.486
6 0.557 17 1.579
7 0.650 18 1.672
8 0.743 19 1.765
9 0.836 20 1.858
10 0.929 21 1.951
11 1.022 22 2.044

6G-800DXA / -1000DXA / -2800DXA User Manual
Control Cable Installation
The control cable to be used should have six stranded
conductors of at least 0.5 mm (#20 AWG) diameter if the
cable is shorter than 40 m in length (125’); if the cable is
longer than 40 m, use conductors with a diameter of 0.75
mm (#18 AWG) or larger.
1. Disassemble the supplied round plug: slide off the
rubber boot, remove the setscrew from the shell using
a small screwdriver, then unscrew the shell from the
plug. Save the setscrew in a safe place until step 10,
so you don lose it.
2. Slide the rubber boot, the round shell and the connec-
tor assembly components onto the “rotator” end of the
cable as illustrated. Leave enough cable protruding to
allow easily dressing the end of the cable.
3. Using special care to avoid nicking the insulation of
the individual wires, strip back 20 mm (about 25/32”)
of the outer jacket from the both ends of the cable.
Now strip 4 mm (about 5/32”) of insulation from each
wire, being careful not to nick the conductors.
4. Solder the wires to the (rotator end) round plug pins.
Note the color of the wire and the number associated
with each pin for reference later. Pin 7 of the round
connector is not used! Conrm that all solder joints
are firm and cleanly made, as this part of the cable
will be difcult to access once the rotator is installed
on top of the tower. Do not slide the shell onto the
connector at this time.
5. Crimp the supplied pin contacts onto the wires on the
opposite (controller) end of the cable, per the illustra-
tion on the next page.
6. Referring to your notes of the wire color at each pin
of the round (rotator end) connector, insert the pins
into the supplied rectangular plug at the opposite
(controller) end of the cable. Be sure that each wire
from the round connector is routed to the correspond-
ing pin number in the rectangular connector (i.e. 1 to 1,
2 to 2, etc.).
7. Temporarily connect the round plug to the rotator,
and the rectangular plug to the controller. Make sure
that the POWER switch on the controller is set to
“OFF”, then plug the controller’s AC cable into your
station’s AC outlet.
8. Set the controller’s POWER switch to “ON”. The pi-
lot lamps on the controller should become illuminat-
ed, and the meter needle on the controller may rotate
so as to align itself with the current position of the
rotator (remember the two units have not been aligned
with each other).
9. Press the LEFT (rotation) side of the seesaw switch,
and conrm that the rotator (when viewed from the
top) and the controller’s needle turn counter-clock-
wise together. Stop rotation, then press the RIGHT
(rotation) side of the seesaw switch, and conrm that
the rotator and indicator needle turn clockwise. If ro-
tation does not occur as indicated, turn the POWER
switch “OFF”, and re-check your cable connections.
10. If the rotator and controller are working as described,
replace the plug shells, setscrew, and rubber boot (re-
moved in step 1).
Before installing the rotator, mast, and antenna, prepare the rotator control cable and test rotator system performance on the
ground. Potential alignment, cabling, or other problems can quickly be resolved on the ground; once a rotator is mounted,
however, troubleshooting may require that the tower be climbed and/or the rotator be removed and lowered to the ground!
Control Cable Preparation (G-800DXA/-1000DXA)
In the G-800DXA and G-1000DXA models, the user must supply and prepare the control cable, per the simple instructions
below.
20mm
8.6〜10.5mm
4mm

7
G-800DXA / -1000DXA / -2800DXA User Manual
Control Cable Installation
Crimp with crimping tool or a pair of pliers
Insert to the fullest extent
Assembly of 6-pin Plastic Connector
Assembly of 7-pin Metal Connector
Tin the wires with solder
Make sure to insert the
Water Resist Boot first
1
2
5 3
6
6
345
12
7
4
7Terminal 7 is not used.
Pin # 7 of the seven pin metal connector is not used.
(as viewed from pin insertion side) (as viewed from solder side)
Wiring for the control cable (identical numbers to be connected)

8G-800DXA / -1000DXA / -2800DXA User Manual
Mounting the Rotator and Antenna
INDOOR PERFORMANCE CHECK AND ALIGNMENT
1. Temporarily connect the control cable between the
rotator unit and the controller.
2. Turn the SPEED control fully counter-clockwise,
and set the SELECT SWITCH on the rear panel to
the right (ADJ. MODE) position.
3. Check to be sure that the POWER switch on the con-
troller is set to “OFF”, then plug the controller’s AC
cable into your station’s AC outlet.
4. Set the controller’s POWER switch to “ON”. Verify
that the controller’s pilot lights have become illumi-
nated.
5. Press the LEFT (rotation) side of the seesaw switch,
and continue to hold it until the rotator reaches the
counter-clockwise position where it automatically
stops (“Left” represents counter-clockwise rotation
when the rotator is viewed from the top).
6. When the rotator has reached the left “stop” posi-
tion, release the LEFT switch, and check to see if the
controller’s indicator needle is pointing to 180° (S:
South).
If the indicator needle is out of alignment, grasp the
edge of the bezel around the bearing window, turn it
10° counter-clockwise, and pull it off. Then, grasp the
needle at its center and pull it straight off, replace the
needle to 180° (straight down), and replace the bezel.
7. Just above the round connector jack on the rotator
unit, you will observe two raised calibration marks
(one each on the “rotating” bell and “fixed” base
of the rotator). These two marks should be directly
aligned with each other. If not, place a small piece of
masking tape on the rotating bell and the xed base of
the rotator unit, and make a calibration mark will be
used to verify the amount of rotation in the next step.
8. Press the RIGHT (rotation) side of the seesaw switch,
and continue rotating to the right until the calibration
marks (from step 7) are again precisely aligned. Now
check the indicator needle, which should also have
rotated fully 360° so as to be pointing exactly to 180°.
If the indicator needle is not pointing exactly to 180°,
go to the rear panel of the controller, and use a small
screwdriver to adjust the FULL SCALE ADJ po-
tentiometer (see the drawing to the right) so that the
indicator needle points exactly to 180°.
9. Press the RIGHT switch again, and continue rotation
to the right. You should observe the OVERLAP LED
becoming illuminated as rotation passes the 180°
point.
If the OVERLAP LED does not light up at the 180°
position, the OVERLAP LED ADJ potentiometer (on
the rear panel of the controller) may be used to align
the illumination threshold to the 180° point.
10. Check to verify that rotation automatically stops at
approximately 270° (West; representing a total rota-
tion range of 450° from the original starting point).
11. Press the LEFT and RIGHT (rotation) switches a
few more times, verifying that rotation appears to be
normal. If so, press the LEFT or RIGHT (rotation)
switch to set the rotator to 270° (West).
12. Set the PRESET control to 180° (fully counter-
clockwise), and press the START switch. The rotator
should rotate counter-clockwise, and stop exactly at
180°.
If not, go to the rear panel of the controller, and use
a small screwdriver to adjust the PRESET ADJ A
potentiometer so that the rotator stops at exactly 180°.
13. Set the PRESET control to 270° (fully clockwise),
and press the PRESET switch. The rotator should ro-
tate clockwise, and stop at exactly 450° (270°; West).
If not, go to the rear panel of the controller, use a
small screwdriver to adjust the PRESET ADJ B po-
tentiometer so that the rotator stops at exactly 450°.
14. Repeat steps 12 and 13 several times until the indica-
tor responds reliably to presetting small angles when
the rotator is near both ends of its range.
15. Set the SELECT SWITCH on the rear panel to the
left (OPERATION MODE) position, and turn the
POWER switch “OFF”.
16. This completes the ground-based testing of the rotator
and controller.
Controller Rear Panel
YAESU MUSEN CO., LTD.
SELECT SWITCH

9
G-800DXA / -1000DXA / -2800DXA User Manual
Mounting the Rotator and Antenna
Installing the Dial Heading Sheet
A clear plastic round dial heading sheet is provided with
the kit, which can be installed with north at any position
you desire. This is particularly useful when you need to
have south at the top of the dial (or east or west) instead
of north.
To install the heading scale:
rTurn on the POWER switch and press the seesaw
switch to set the indicator needle to 180° (straight
down), then turn off the POWER switch.
rGrasp the edge of the bezel around the bearing win-
dow, turn it 10° counter-clockwise, and pull it off.
rNote the position of the needle, then grasp it at its
center, and pull it straight off.
rDetermine which compass direction you desire to be
upmost, and install the compass heading label sheet
against the azimuth scale, so that the small teeth in the
edges of the sheet lock around the edge.
rReplace the needle and bezel in the same direction as
they were before (see diagram at the below).
Bezel
Azimuth Indicator Needle
Dial Heading Sheet
PRESET Knob Calibration
Perform this procedure only if it is not possible to align
the PRESET knob tracking using the PRESET ADJ A
and PRESET ADJ B potentiometers on the rear panel,
as described in steps 12 ~ 14 on the previous page.
rPull off the PRESET control knob.
rSet the potentiometer shaft to the fully counter-clock-
wise position, then turn it 30° clockwise.
rUsing care not to disturb the PRESET potentiom-
eter, push the knob back on the shaft so that the knob
stopper is aligned with the counter-clockwise edge of
the slot in the panel behind the knob, as shown in the
drawing to the right.
rRepeat steps 12 and 13 on the previous page for the
PRESET Dial Tracking Alignment.
Do not forget to set the SELECT SWITCH on the
rear panel to the left (OPERATION MODE) position
after alignment.
30°
Stopper Limit
Potentiometer Shaft
Knob
Stopper

10 G-800DXA / -1000DXA / -2800DXA User Manual
Mounting the Rotator and Antenna
Installation of the G-800DXA/G-1000DXA Rotator and Antenna on Tower
Important!! Before mounting the mast to the rotator, a single hole must be drilled through the bottom of the mast to accom-
modate an anti-twist support bolt used in the base support clamp halves.
1. Drill a 9 mm diameter hole through both walls of the
mast, centered 50 mm from the mast bottom (see Fig-
ure 1). Ensure the drill is maintained perpendicular
and centered when making the holes, to ensure proper
alignment of the holes in the mast with those in the
base support clamp.
2. Attach the rotator to the tower’s rotator mounting
plate, using the supplied M8 x 16 bolts and spring
washers. It is recommended that the tips of the bolts
be lightly dipped in lubricating grease, to ease disas-
sembly in the future (see Figure 2).
3. If a thrust bearing (such as the optional Yaesu model
GS-065) is to be utilized, mount it on the top of the
tower (see Figure 3) using the supplied hardware.
4. Partly tighten the mast clamp À to the rotator hous-
ing using the supplied M8 x 25 bolts Áspring wash-
ers and at washers (see Figure 5).
5. Using a “gin pole” or other raising xture, insert the
antenna mast through the bearing from above, and
set the mast in the rotator’s mast clamps, then partly
tighten the mast clamps using the supplied M8 x 70
bolts Âand spring washer.
Advice: One side of the clamp has ridges on either
side of the bolt holes; the bolts should be in-
serted from this side, so the ridges hold the
bolt head from turning.
6. Pass the supplied M8 x 95 screw Äthrough the mast
clamps and through the mast, then partly tighten it us-
ing the supplied square nut Å.
7. Partly tighten the thrust bearing’s mast bolts, so as to
center the mast in the thrust bearing. When you are
satised that the mast is centered, tighten the thrust
bearing’s mast bolts to secure the mast in place.
8. Now tighten all the nuts of the mast clamp except
for the square nut holding the M8 x 95 bolt through
the mast clamps and mast. Leave the square nut only
lightly secured at this time.
Caution: Do not over-tighten the nuts on the mast
clamps. They should be tightened until the
spring washer becomes at, then tightened
further by 1/2 to one turn maximum.
9. Install the rotator control cable’s round plug into the
jack on the side of the rotator’s base, and tighten the
connector ring to secure the connector. Slide the rub-
ber boot over the connector; while putting a slight
amount of inward pressure on the rubber boot, use
electrical tape to secure the back end of the rubber
boot to the cable. This slight inward pressure on the
rubber boot will enhance the weatherproong of the
installation. Secure the control cable to the tower in
several places, using electrical tape and/or UV-resis-
tant cable ties.
10. Get a ground crew member to set the controller to
180° (South), which corresponds to 180° of rotation
clockwise from the left “stop” point. During rotation,
watch the M8 x 95 bolt to be sure it does not bind be-
tween the mast and the mast clamps. If binding is ob-
served, stop rotation and make slight adjustments to
the thrust bearing and/or mast clamps, so as to elimi-
nate the binding. If the M8 x 95 bolt is not binding,
you can go ahead and tighten the square nut securely.
11. Provide sufcient slack in the coaxial cable such that
the antenna can rotate over its full 450° range without
putting any tension on the coax (see Figure 8). Secure
the coax to the tower, using electrical tape and/or UV-
resistant cable ties.
12. Installation is now complete. If you have scratched
through the melamine coating of the rotator during
installation, you may wish to apply several coats of
clear acrylic spray to help protect the bare metal from
corrosion. After installation is complete, test the sys-
tem by operating the rotator through the entire range
of its rotation. It is helpful to do so with the help of
an observer, so that rotation can be stopped if some
obstruction, binding, or tension on the coaxial cable’s
turning loop should be encountered during the perfor-
mance test.
Installation Note
If using a roof tower with a long mast between the
top of the tower and the antenna, the use of a “Guy
Bearing” is highly recommended. The Yaesu GS-
050 and GS-065 include guying “ears” which allow
attachment of guy cables. As installing a guying sys-
tem may cause the center-lines of the guy bearing and
the rotator to become mis-aligned, be certain to check
the roof tower attachment and guy cable alignment to
ensure that the mast is straight.

11
G-800DXA / -1000DXA / -2800DXA User Manual
Mounting the Rotator and Antenna
Mast Bearing GS-065 (option)
Must be parallel
M8 x 16 (length: 16 mm)
Spring Washer
Less than 1 m
More than 1 m
Rotator
Mast Bearing
GS-065 (option) Provide sufcient slack
Figure 1 Figure 2 Figure 3
Figure 4
Figure 7 Figure 8
Figure 5
Antenna Mast
Figure 6
Installation of the G-800DXA/G-1000DXA Rotator and Antenna on Tower

12 G-800DXA / -1000DXA / -2800DXA User Manual
Mounting the Rotator and Antenna
Installation of the G-2800DXA Rotator and Antenna on Tower
Important!! Before mounting the mast to the rotator, a single hole must be drilled through the bottom of the mast to accom-
modate an anti-twist support bolt used in the base support clamp halves.
1. Drill a 9 mm diameter hole through both walls of the
mast, centered 82 mm from the mast bottom (see Fig-
ure 9). Ensure the drill is maintained perpendicular
and centered when making the holes, to ensure proper
alignment of the holes in the mast with those in the
base support clamp.
2. Attach the rotator to the tower’s rotator mounting
plate, using the supplied M8 x 18 bolts and spring
washers. It is recommended that the tips of the bolts
be lightly dipped in lubricating grease, to ease disas-
sembly in the future (see Figure 10).
3. If a thrust bearing (such as the optional Yaesu model
GS-065) is to be utilized, mount it on the top of the
tower (see Figure 11) using the supplied hardware.
4. Partly tighten the mast clamp À to the rotator hous-
ing using the supplied M8 x 30 bolts Áspring wash-
ers and at washers (see Figure 13).
5. Using a “gin pole” or other raising xture, insert the
antenna mast through the bearing from above, and
set the mast in the rotator’s mast clamps, then partly
tighten the mast clamps using the supplied M8 x 70
bolts Â, spring washers and at washers.
Advice: One side of the clamp has ridges on either
side of the bolt holes; the bolts should be in-
serted from this side, so the ridges hold the
bolt head from turning.
6. Pass the supplied M8 x 95 screw Äthrough the mast
clamps and through the mast, then partly tighten it us-
ing the supplied nut Å.
7. Partly tighten the thrust bearing’s mast bolts, so as to
center the mast in the thrust bearing. When you are
satised that the mast is centered, tighten the thrust
bearing’s mast bolts to secure the mast in place.
8. Now tighten all the nuts of the mast clamp except for
the nut holding the M8 x 95 bolt through the mast
clamps and mast. Leave this nut only lighly secured at
this time.
Caution: Do not over-tighten the nuts on the mast
clamps. They should be tightened until the
spring washer becomes at, then tightened
further by 1/2 to one turn maximum.
9. Install the rotator control cable’s round plug into the
jack on the side of the rotator’s base, and tighten the
connector ring to secure the connector. Slide the rub-
ber boot over the connector; while putting a slight
amount of inward pressure on the rubber boot, use
electrical tape to secure the back end of the rubber
boot to the cable. This slight inward pressure on the
rubber boot will enhance the weatherproong of the
installation. Secure the control cable to the tower in
several places, using electrical tape and/or UV-resis-
tant cable ties.
10. Get a ground crew member to set the controller to
180° (South), which corresponds to 180° of rotation
clockwise from the left “stop” point. During rotation,
watch the M8 x 95 bolt to be sure it does not bind
between the mast and the mast clamps. If binding is
observed, stop rotation and make slight adjustments
to the thrust bearing and/or mast clamps, so as to
eliminate the binding. If the M8 x 95 bolt is not bind-
ing, you can go ahead and tighten the nut securely.
11. Provide sufcient slack in the coaxial cable such that
the antenna can rotate over its full 450° range without
putting any tension on the coax (see Figure 16). Se-
cure the coax to the tower, using electrical tape and/or
UV-resistant cable ties.
12. Installation is now complete. If you have scratched
through the melamine coating of the rotator during
installation, you may wish to apply several coats of
clear acrylic spray to help protect the bare metal from
corrosion. After installation is complete, test the sys-
tem by operating the rotator through the entire range
of its rotation. It is helpful to do so with the help of
an observer, so that rotation can be stopped if some
obstruction, binding, or tension on the coaxial cable’s
turning loop should be encountered during the perfor-
mance test.
Installation Note
If using a roof tower with a long mast between the
top of the tower and the antenna, the use of a “Guy
Bearing” is highly recommended. The Yaesu GS-
050 and GS-065 include guying “ears” which allow
attachment of guy cables. As installing a guying sys-
tem may cause the center-lines of the guy bearing and
the rotator to become mis-aligned, be certain to check
the roof tower attachment and guy cable alignment to
ensure that the mast is straight.

13
G-800DXA / -1000DXA / -2800DXA User Manual
Mounting the Rotator and Antenna
Mast Bearing GS-065 (option)
Must be parallel
M8 x 18 (length: 18 mm)
Spring Washer
Antenna Mast
Less than 1 m
More than 1 m
Rotator
Mast Bearing
GS-065 (option) Provide sufcient slack
Figure 9 Figure 10 Figure 11
Figure 12
Figure 15 Figure 16
Figure 13 Figure 14
Installation of the G-2800DXA Rotator and Antenna on Tower

14 G-800DXA / -1000DXA / -2800DXA User Manual
External Control
The optional GS-232B Computer Control Interface Unit allows the Rotator to be controlled by a personal computer.
Pin Function
1 Connect Pin 1 to Pin 5 to rotate clockwise
2 Connect Pin 2 to Pin 5 to rotate counterclockwise
3 Apply 0V to 5V to control rotator speed proportionally
4 Outputs 2 to 4.5 VDC, corresponding to 0° to 450° rotation
5 Common ground
6 N.C.
● The Rotor Rotation Angle Detection Output voltage at connector pin 4 can be adjusted using OUT VOL ADJ on the
controller rear panel.
● By adjusting the pin 4 output voltage to 4.5V when the rotor rotates to 450°, rotation from 0° to 450°can be converted
to approximately 0V to 4.5V. Because of the cable and component resistance values, the 0° voltage may not start from
exactly 0V.
YAESU MUSEN CO., LTD.
①
③④
⑥ ⑤
②

15
G-800DXA / -1000DXA / -2800DXA User Manual
Specications
Rotator Attachment Dimensions
G-800DXA G-1000DXA G-2800DXA
Power Supply Voltage 117/220 VAC, 50/60 Hz 117 VAC, 50/60 Hz
Power Supply Current Consumption 1 A (117 VAC)
0.5 A (220 VAC) 1.5 A
Rotor Voltage 11 ~ 24 VDC
360° Rotation Time (Non Loaded) 100 ± 10 sec to 40 ± 5 sec (Variable) 120 ± 10 sec to 50 ± 5 sec (Variable)
Rotation Range 450°±3°
Rotation Torque 600 to 1,100 kgf-cm (43 to 80 ft-lbs) 800 to 2,500 kgf-cm (57 to 180 ft-lbs)
Braking Torque 4,000 kgf-cm (289 ft-lbs) 6,000 kgf-cm (434 ft-lbs) 25,000 kgf-cm (1800 ft-lbs)
Maximum Vertical Load 200 kg (441 lbs) or less (continuous)
800 kg (1764 lbs) (momentary)
300 kg (661 lbs) or less (continuous)
1,200 kg (2646 lbs) (momentary)
Mast Outside
Diameter φ38 to φ63 φ48 to φ63
Braking Type Mechanical and Electrical stoppers
Antenna K Coefcient 180 or less 230 or less 950 or less
Wind Loading Area
0.75 m2 x 0.6 m or less
(Pole Type)
2 m2or less (Tower Type)
0.75 m2 x 0.6 m or less
(Pole Type)
2.2 m2or less (Tower Type)
1 m2 x 0.8 m or less (Pole Type)
3 m2or less (Tower Type)
Maximum Continuous Duty 3 minutes
Operating Temperature Range 0 °C to +40 °C (Controller)
–20 °C to +40 °C (Rotator)
Rotator Dimensions φ186 x 300 mm (φ7.3 x 11.8 inch) φ200 x 345 mm (φ7.8 x 13.6 inch)
Rotator Weight Αpprox. 3.6 kg (7.9 lbs) Αpprox. 6.5 kg (14.3 lbs)
Controller Dimensions
(W) x (H) x (D) 200 x 130 x 193 mm (7.8 x 5.1 x 7.6 inch)
Controller Weight Approx. 2.8 kg (6.2 lbs) Approx. 3.8 kg (8.4 lbs)
84mm
φ9（4 locations）
84mm
φ119

16 G-800DXA / -1000DXA / -2800DXA User Manual
Accessories & Options
UNPACKING & INSPECTION
When unpacking the rotator make sure you nd the following items:
G-800DXA/G-1000DXA Quantity
Controller Unit 1
Rotor Unit 1
Mast Clamp 1 pair
7-pin Round Plug (with Rubber Boot) 1 set
6-pin Rectanglar Plug 1 set
M8 x 95 mm Socket Head Cap Screw 1
M8 x 16 mm Hex Bolts 4
M8 x 25 mm Hex Bolts 4
M8 x 70 mm Hex Bolts 4
Split Washers 14
Flat Washers 4
M8 Nuts 4
Square Nut 1
Plastic Dial Heading Sheet 1
G-2800DXA Quantity
Controller Unit 1
Rotor Unit 1
Mast Clamp 1 pair
Control Cable (40 m, 6 core cable) 1
M8 x 95 mm Socket Head Cap Screw 1
M8 x 18 mm Hex Bolts 4
M8 x 30 mm Hex Bolts 4
M8 x 70 mm Hex Bolts 6
Split Washers 14
Flat Washers 10
M8 Nuts 7
Plastic Dial Heading Sheet 1
Optional Accessories
GC-038 Mast Clamp (for the G-800DXA and G-1000DXA)
GC-048 Mast Clamp (for the G-2800DXA)
GS-050 Universal Thrust Bearing (for 28 - 50 mm mast)
GS-065 Universal Thrust Bearing (for 38 - 65 mm mast)
GS-680U Universal Bearing (for 35 - 68 mm mast)
GS-232B Computer Control Unit (RS-232C Serial)
C-25MWP Control Cable (25 m)
C-40MWP Control Cable (40 m)
WP 7PIN Rotator Connector
GA-2500 Absorber Joint (for the G-800DXA and G-1000DXA)
GA-3000 Absorber Joint (for the G-2800DXA)

Printed in Japan
Copyright 2018
YAESU MUSEN CO., LTD.
All rights reserved.
No portion of this manual may be
reproduced without the permission of
YAESU MUSEN CO., LTD.
YAESU MUSEN CO., LTD.
Tennozu Parkside Building
2-5-8 Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-0002 Japan
YAESU USA
6125 Phyllis Drive, Cypress, CA 90630, U.S.A.
YAESU UK
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
1803N-AS