and that will not interfere with elevator operation. The
tower faces B and C, in tower section No. 4, about 3 feet
person who attaches the antenna elements should have
below base of tower adapter.
(2) Bolt flooring onto these channels. Flooring
should be either 2by 6-inch fir planks of good quality or
aluminum alloy plates.
(a) Use a 20-foot ladder and tower leg
ladders to reach antenna.
d. Antenna Attachment.
(b) Raise elevator assembly high enough so
that one or more antenna elements can be attached by
persons standing on tower leg ladders.
When antenna is assembled, be sure
(c) Raise elevator assembly as often as
necessary to complete antenna assembly.
elements will face tower after
(d) Use tower adapter winch to raise
antenna is attached to carriage.
antenna elements to persons on tower legs ladders.
(1) The antenna to be mounted is of the
(8) Raise elevator assembly. Follow procedure
AN/GSA131(V) series. Refer to TM 32-5985-201-15 for
given in paragraph b, steps (2) and (3), above.
the assembly of this antenna and of the mast. As TM
(9) Install antenna installation platform (paragraph
32-5985-201-15 states, before it can be installed, the
c, above) to reduce hazards and other problems in
antenna must be built with elements protruding from
unbolting antenna carriage.
three sides. The side that does not have protruding
(10) Wrap two loops of cable of tower adapter
elements must be the side that faces the tower when the
winch around antenna.
antenna is mounted onto the elevator.
(11) Crank winch to move antenna onto adapter.
(12) Remove winch cable from antenna, roll
Test elevator and carriage for proper
carriage into position on elevator assembly, and lower
operation and for alignment before
elevator. Elevator assembly should be removed now.
sure that crank axis of tower adapter
(13) Attach transmission lines to one tower leg
winch is parallel to tower face A.
and position cable to another tower leg. Connect
Then the winch can move the
transmission lines to antenna and control cable to
antenna carriage as it rides on tower
2-18 REMOVAL OF ELEVATOR ASSEMBLY.
(2) Perform the elevator and carriage tests
Remove elevator assembly by procedures below. Item
described in paragraph b, above. Check orientation of
numbers refer to figure 2-9, unless otherwise indicated.
(3) Attach antenna positioner to antenna carriage
The bottom rollers of the elevator
assembly must always be at least 6
(4) Raise antenna into position for mounting by
inches from the bottom ends of
the procedure given in TM 32-5985-201-15.
lowest track section.
(5) Before setting antenna down, be sure that the
three holes in platform of antenna carriage properly
align with holes in positioner flange. If not, correct
Before raising or lowering load with
controls momentarily to eliminate all
(a) For type 1 antennas, remove positioner
slack in cable.
access cover and manually propel drive belt until holes
loading may result which can cause
damage to hoist or rigging.
screw. Manually turn pedestal to align holes and relock.
a. Lower elevator assembly.
(6) Lower antenna mast onto pedestal. Secure
b. With elevator hoist, raise elevator assembly
with proper attaching hardware.
above tower section No. 1.
(7) Before raising the elevator assembly, attach
the remaining antenna elements that can be attached