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Page Title: Section IV ALINEMENT AND ADJUSTMENT PROCEDURES
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TM 11-5820-670-30
Section IV ALINEMENT AND ADJUSTMENT PROCEDURES
Subject
Para
Page
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rf Amplifier Assembly A6500 Alinement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gearbox Assembly A9700 Alinement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Carrier Squelch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
150 Hz Tone Modulation Frequency and Deviation Adjustment . . . . . . . . . . . . . . . . . . . . . . . .
Tone Squelch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Narrow Band Deviation Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Sensitivity Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Oscillator Alinement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Homing Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-27. GENERAL.
This section contains alinement instructions for use with Maintenance Kit MK-1035/ARC-131 and
TMDE (discrete test equipment). The instructions are presented in individual procedures which apply
to a specific stage of the rt receiver or transmitter section.
Each procedure is self-contained; that is, all necessary instructions are provided without reference to
any previously performed alinement. Therefore, it is possible to use the procedures in this section to
aline an individual module without doing any work on other stages in the radio.
However, this maintenance approach is not recommended. It is best to perform a complete realine-
ment of all modules after replacing an individual module. This should be done even if the radio has
undergone its annual realinement less than one year prior to the repair.
Careful performance of all the instructions contained in the alinement procedures ensures that the
radio will meet all performance standards outlined in section I of this chapter. Although the radio may
seem to work satisfactorily if other quick-fix methods are used, there is no guarantee that such
methods will result in proper performance when the radio is used along with secure equipment, or for
other than voice communication.
2-126


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