TM 11-5985-284-15
direction label on top of the case
TUNE control for a greater output sig-
nal on the receiver. A maximum signal
(b) Extend the sense whip antenna. This
indication will be indicated by a loud
action will cause a signal output from
audio output on the receiver because of
a modulated carrier or by maximum re-
the receiver. Starting with the broad-
side position ( (a) above), listen for the
ceiver quieting because of an unmodu-
maximum output signal while rotating
lated carrier.
the loop antenna clockwise and then
Caution: Do not use the FINE
counterclockwise from the broadside
TUNE control setting as a standard in
position. Set the AT-1082/PRC to
the position that provides the strongest
quency.
signal indication in the receiver. The
(3) Adjust the ATTENUATOR control for
loop antenna is again in line with the
transmitting signal source, and the sig-
comfortable audio output from the re-
ceiver. At this point, the AT-1082/PRC
nal source is in the direction away from
the sense whip antenna, as indicated
loop antenna is oriented edgewise to the
by the SIGNAL MAX arrow on the
transmitting source.
(4: To determine the direction of the signal
signal direction label. (* See below.)
(5) Retract the sense whip antenna, and,
source, proceed as follows:
using the loop antenna, home-in on the
(a) Rotate the loop antenna 90 to obtain
signal source with the null indication.
a null indication on the receiver. The
(6) Adjust the ATTENUATOR control for
loop antenna is now broadside to the
a comfortable listening level of the re-
signal source and is indicated by the
SIGNAL NULL arrows on the signal
ceived signal.
d. Moisture will condense on equipment that
has been exposed to the cold and is brought into a
Operation of Antenna AT-1082/PRC may be
warm room; it will continue to do so until room
difficult in regions where extreme cold, heat, hu-
temperature is reached. This condition also
midity and moisture, sand conditions, etc., pre-
arises when equipment warms up during the day
after exposure during a cold night. When the
are given on procedures for minimizing the effect
equipment has reached room temperature dry it
of unusual operating conditions.
thoroughly.
2-10. Operation in Arctic Climates
2-11. Operation in Desert Climates
Subzero temperatures and climatic conditions
The main problem when operating this equip-
associated with cold weather affect the efficient
operation of this equipment. Instructions and
ment in desert areas is the large amount of sand
precautions for AT-1082/PRC operation under
or dust and dirt which enters its moving parts.
such adverse conditions are as follows:
Therefore, Antenna AT-1082/PRC should be
a. Handle the equipment carefully.
stored in dust proof cent ainers when it is not in
b. Keep the equipment warm and dry.
use. When using this equipment, keep it as free
c. Keep frost or ice from accumulating on the
from dust and sand as possible. Excessive accu-
loop frame; such accumulations will prevent the
mulation of sand, dust, or dirt on the loop frame
loop from being opened or closed and will prevent
will prevent the sense whip antenna from being
the sense whip antenna from being extended or
extended or retracted as required.
retracted.
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