Learning Event 1:
INSTALL THE AN/UXC-7
Situation. Tactical scenario to environmental condition. The soldier is in the desert assigned to a
headquarters bivouacked in a rear echelon area, and he has been ordered to perform an operation test in
both A and B modes. He is given AN/UXC-7 for installation in a communication shelter to replace an
AN/UXC-7 that is producing poor quality reception. The soldier must perform installation procedures
for Mode A and Mode B self-test operation, within a minimum time limit as incoming traffic is
important to the commander for proper tactical decision making. The AN/UXC-7 may be installed in
either a tactical or nontactical configuration. The AN/UXC-7 may be installed at a tactical site or
nontactical site, or it may be mounted within a vehicle.
NOTE: The AN/UXC-7 may be referred to as the LDF throughout the remainder of this lesson.
a. Fixed site installation. Installation at a fixed site requires only connecting the power cable,
signal cables, and voice communications equipment as described in paragraphs 2-4 and 2-5 of TM 11-
5815-615-10 and unlocking the carriage.
b. Vehicle installation. Mount the LDF in a vehicle as follows:
(1) Place the LDF on vehicle mounting adapter engaging slot on the rear wall of the LDF
with raised lip of adapter.
(2) Engage latches on front of adapter with extension flanges on the LDF.
(3) Tighten adapter latch knurled knobs to secure the LDF in adapter.
(4) Connect ground, power, and signal cables and voice communications equipment as
described in paragraphs 2-4 and 2-5 of TM 11-5815-615-10.
Power Cable Connection.
a. When the LDF is powered from an AC source, it is imperative that the chassis be
connected to earth ground. This connection is automatic when the power cord is plugged
into a conventional grounded three-pole outlet. However, many AC power systems, such as those
found at some field installations, do not provide a ground at the outlet, and an alternate
grounding method must be used.
This is accomplished by connecting a grounding wire