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|  TM 11-5820-401-34-3/0967-LP-432-3060
4-17. TUNER A1000 ALINEMENT.
PURPOSE. This procedure tunes the A1000 assembly to produce maximum amplification of low-level
signals and maximum attenuation of noise.
TEST EQUIPMENT AND MATERIALS
Test Set AN/GRM-114
Maintenance Kit MK-1978/VRC
Power Supply PP-1104(*)/G
TEST SETUP. Connect the equipment as shown in test setup diagram
. Remove R-442/VRC top
and bottom covers. (See paragraph 2-7.)
INITIAL EQUIPMENT CONTROL SETTINGS. Set equipment controls as indicated in the following
table.
CONTROL AND SWITCH SETTINGS
EQUIPMENT
CONTROL OR SWITCH
POSITION/SETTING
R-442/VRC
POWER
ON-RESET
BAND
MC-TUNE-KC
30. 00
VOLUME
Fully clockwise
SQUELCH
NEW OFF
4-117
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