Loosen the two screws holding the switch actuator block on the elevation yoke and position the
block until the ohmmeter just indicates zero.
Tighten the screws loosened in step d.
Position the elevation housing to +95 degrees, as indicated on the elevation vernier, and repeat
steps d and e for the other switch actuator.
SCHEMATIC DIAGRAM AND PARTS LIST - The schematic diagram for the elevation drive assembly is
contained in Figure 5-11. The parts list for the elevation drive assembly is contained in Table 5-7 and referenced to
I of this manual contains information concerning the radome-platform circuits which are
interconnected with other circuits in the Antenna System. The schematic diagram for the radome box is shown in Figure
DESCRIPTION - The portable stand and hoisting unit consists of four tubular aluminum alloy winch support
legs approximately six feet high; four hoisting unit baseplates 14 inches square; four pairs (eight identical) of tubular
aluminum outrigger support tie rods which form the braces for the wind support legs; eight blue/white end tensioning tie
rods; four winches, four T-bar assemblies, four red end tensioning tie rods; eight adjustable tie rods, four horizontal
bottom braces, four horizontal top braces, and four box supports. The winch support legs are spaced and braced in place
by the tensioning tie rods, which have threaded clevis bolts at the ends. The clevis bolts have right-hand and left-hand
threads which permit tightening each corner assembly into a rigid structure. The tensioning tie rods and corner outrigger
support tie rods are attached with bolts to mating pads welded to the winch support legs, hoisting unit support baseplate,
and outrigger support tie rods. A hand-operated winch is mounted on each vertical support. A cable from the winch
passes over two pulleys mounted on the T-bar and is attached to the radome-platform base. When the hand crank on
the winch is turned, it raises or lowers the radome. Holes in the corners of each hoisting unit support and outrigger
support tie rod baseplate are provided for securing the baseplates in place with ground stakes. The portable hoisting unit
is used for lifting a radome-platform out of the transporting trailers for lowering them to the ground. This is done when
the radome-platform is installed on an 80-foot tower. The same hoisting procedure is used for lifting the radome-platform
to mount it on the portable stand so that the radome-platform can be operated while it is supported by the portable
hoisting unit. Box supports bolt to the radome base to hold it securely in operating position.