6. Raise the mast into position. Rotate the mast by
hand until the antenna director is headed North.
Tighten the base clamp. Line up the mast in the
vertical position and tighten the guy wires.
TOP OF TOWER INSTALLATION
1. Mounting the rotator on top of a tower is similar
to the mast mounting except the lower mast
support is not used. (See Figure 8.)
2. The rotator is attached to the tower plate by means
of four bolts and lockwashers (see Figure 7).
Spacer washers must be used between the
rotator and plate for clearance of the rotator
housing bolt heads. The flat tower plate must be
drilled in four places using the template
provided with this manual unless the tower plate
is already properly drilled. A fifth hole must be
drilled to cut to clear the control cable.
3. Connect the control cable to the rotator after pass-
ing it through the tower plate. Tighten the
mounting bolts securely.
4. Assemble the mast and antenna to the top of the
rotator using the U-bolts, nuts and lockwashers
through the rotator and clamps as shown in
Figure 7. The maximum mast diameter that may
be used is 2 1/16" O.D.. Turn the antenna by
hand until the director is pointed North, then
tighten the U-bolts securely.
5.
Tape the rotator control cable to the tower at
points 18" to 24" apart.
6. Connect the antenna cable to the antenna (follow
manufacturer's recommendation). Make sure you
have enough slack for the 360° rotation. (the an-
tenna rotates "S" to "E" [counterclockwise] on
the first turn, therefore, slack should wrap
counterclockwise around the mast.) See Figure 7.
Figure 8
Rotator Mounting on a Tower Top Plate
9
