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Operation Outside Amateur Bands - TM-11-5820-554-120083
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TM-11-5820-554-12 Radio Set AN/FRC-93(V)1 AN/FRC-93(V)2 AN/FRC-93(V)3. AN/FRC-93(V)4 AN/FRC-93(V)5 AN/FRC-93(V)6 AN/FRC-93(V)7 Manual
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CHAPTER 12. COUPLER, ANTENNA CU-2004/U


TM 11-5820-554-12
Table 11-2. Multimeter Scale Values.
Meter switch setting
Full scale indication
Normal indication
TUNE .................................
Not applicable ......................
Zero when Collins 30L-1 is properly loaded
DC VOLTS .........................
2,000 volts ...........................
1,800 volts (no modulation)
1,600 volts (at rated load)
DC AMPS ...........................
1.0 amp (1,000 ma) ..............
600 ma (keydown cw)
300 to 350 ma (ssb voice peaks)
110 ma (keyed, no excitation)
Section IV. OPERATOR'S MAINTENANCE INSTRUCTIONS
11-12. General
Operator's maintenance instructions are covered in paragraphs 3-19 through 3-22. Cleaning is covered in
11-13. Operator's Preventive Maintenance Checks and Services Chart for Amplifier, RF
AM-3979/FRC-93 (Collins 30L-1)
B-Before
Interval
Item
B
D
A
W
M
Item to be inspected
Procedure
Equipment is not
No.
ready/available if:
Multimeter checks
Perform steps in table 11-2.
Equipment meter readings
given in table 11-2 are
5% off given values.
Section V. ORGANIZATIONAL MAINTENANCE INSTRUCTIONS
11-14. General
Organizational preventive maintenance instructions are covered in paragraph 3-25, 3-26, and 3-27. Touchup
painting is covered in paragraph 3-29.
11-15. Organization Preventive Maintenance Checks and Services Chart for Amplifier,
RF AM-3979/FRC-93 (Collins 30L-1
W-Weekly
M-Monthly
Q-Quarterly
Interval
Item
W
M
Q
Item to be inspected
Procedure
No.
Equipment performance..
Check meter checks as outlined in table 11-2 above.
Check condition of output tank coils and tuning assemblies for
evidence of rf damage.
Change 6
11-7


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