TM
11-5985-284-15
Procedure
Item to be inspected
References
12
AT-1082/PRC - - - - - -
Position the loop antenna so that the SIGNAL MAX arrow on
a.
the signal direction label is toward the transmitting station.
2-7d.
Note the level of the received signal.
lower.
c. Set the loop antenna in the original position (a above).
AT-1082/PRC,
13
a. Turn ATTENUATOR control to positions 1, 2, 3, and 4. At
ATTENUATOR
each position, signal level should be lower.
control.
b. Set the ATTENUATOR control for a comfortable listening level
on receiver.
14
AT-1082/PRC, FINE
a. Rotate the FINE TUNE control to each of its other positions.
TUNE control.
Received signal level should be lower as control is moved away
from the original setting.
b. Reset the FINE TUNE control to original position.
15
AT-1082/PRC,
a. Rotate the BANDSWITCH control to each of its other posi-
BANDSWITCH
tions; no signal is received on the receiver in the other positions.
b. Reset to the original position.
control.
16
a. Retract the sense whip antenna.
AT-1082/PRC, null
position.
b. Rotate the loop antenna 90; it is now broadside to the trans-
mitting station. The received signal level should lessen or
the signal should disappear.
Note. If the tactical situation permits use of other frequencies, use the pro-
cedures given in sequence numbers 17 through 20 below, to test the operation of
the AT-1082/PRC in 40-, 50-, 60-, and 70-MHz bands, and disconnect the AT-
1082/PRC from the radio receiver. Communicate with the distant radio station
and arrange for it to transmit using 45, 55, 65, and 75 MHz, in turn, while making
the tasts given in sequence numbers 17 through 20 below which are associated with
each frequency.
17
a. Set BANDSWITCH to 40 and FINE TUNE to 5,
AT-1082/PRC,
h. Tune receiver to 45 MHz.
BANDSWITCH and
c. Repeat procedures given in sequence lumbers 14 through 16
FINE TUNE con-
above.
trols (45 MHz).
18
a. Set BANDSWITCH to 50 and FINE TUNE to 5.
AT-1082/PRC,
b. Tune receiver to 55 MHZ.
BANDSWITCH and
c. Repeat procedures given in sequence numbers 14 through 16
FINE TUNE con-
above.
trols (55 MHz).
19
a. Set BANDSWITCH to 60 and FINE TUNE to 5.
AT-1082/PRC,
b. Tune receiver to 65 MHz.
BANDSWITCH and
FINE TUNE con-
trols (6.5 MHz).
c. Repeat procedures given in sequence numbers 14 through 16
above.
20
AT-1082/PRC,
a. Set BANDSWITCH to 70 and FINE TUNE to 5.
BANDSWITCH
b. Tune receiver to 7.5 MHz.
and FINE TUNE
c. Repeat procedures given in sequence numbcrs 14 through 16
controls (75 MHz).
above.
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