Chapter 1 GENERAL
Chapter 2 FUNCTIONING OF EQUIPMENT
Analysis of Modulation Amplifier Circuit
Analysis of Klystron Oscillator Circuit
Analysis of Power Monitor Bridge Circuit
Analysis of Beam Power Supply
Analysis of Klystron Filament Power Supply
Chapter 3 GENERAL SUPPORT MAINTENANCE
Figure 3-1. Signal Generator AN/URM-149, top view
Figure 3-2. Signal Generator AN/URM-149, bottom view
Checking Filament and Plate Voltage Circuits for Shorts
Figure 3-4. Signal Generator AN/URM-149, left view
Figure 3-5. RF Oscillator Section, top view
Figure 3-6. RF Oscillator Section, right side view
Figure 3-8. Tracking Subassembly, bottom view
Figure 3-9. Terminal Board TB2-A1, parts location diagram
Figure 3-10. Terminal Board TB3-A2, parts location diagram
Figure 3-11. Terminal Board TB4-A3, parts location diagram.
Figure 3-12. Chassis terminal boards parts location diagram
Troubleshooting Chart - TM-11-6625-1633-450024
Troubleshooting Chart - TM-11-6625-1633-450025
Stage Gain Measurements
Analysis of Measurements
In-Circuit Transistor Tests
Out-of-Circuit Transistor Tests
Isolating Trouble to a Diode
Chpater 4 REPAIRS AND ADJUSTMENTS
Removal and Replacement of Terminal Boards
Removal and Replacement of Thermistor A4RT2 and A4RT3
Replacement of Tape Cam
Replacement of Frequency Tracking Springs
Klystron Beam Current Adjustment
Modulation Oscillator Output Adjustment
Deviation Accuracy Adjustments
Chapter 5 DEPOT MAINTENANCE AND DEPOT OVERHAUL STANDARDS
Replacement of Klystron
RF Output Frequency Test
Figure 5-1. Rf output frequency, test setup diagram
Figure 5-2. Rf output power, test setup diagram.
Rf Output Resistance Test
RF Noise Level Test
Figure 5-4. Rf noise level measurement, test setup diagram
RF Noise Level Test cont'd
APPENDIX REFERENCES - TM-11-6625-1633-450048
INDEX - TM-11-6625-1633-450049
INDEX - TM-11-6625-1633-450050
Figure 5-5. Tube socket voltage and resistance diagram
Figure 5-6. Resistor, inductor, and capacitor color code diagram
Figure 5-7. Signal generator AN/URM-149, block diagram.
Figure 5-81 . Signal Generator AN/URM-149, schematic diagram (part 1 of 2).
Figure 5-82 . Signal Generator AN/URM-149, schematic diagram (part 2 of 2).
TM-11-6625-1633-45 Signal Generator AN/URM-149 Manual
Chapter 2 FUNCTIONING OF EQUIPMENT
Analysis of Modulation Amplifier Circuit
Analysis of Klystron Oscillator Circuit
Analysis of Power Monitor Bridge Circuit
Analysis of Beam Power Supply
Analysis of Klystron Filament Power Supply
Chapter 3 GENERAL SUPPORT MAINTENANCE
Figure 3-1. Signal Generator AN/URM-149, top view
Figure 3-2. Signal Generator AN/URM-149, bottom view
Checking Filament and Plate Voltage Circuits for Shorts
Figure 3-4. Signal Generator AN/URM-149, left view
Figure 3-5. RF Oscillator Section, top view
Figure 3-6. RF Oscillator Section, right side view
Figure 3-8. Tracking Subassembly, bottom view
Figure 3-9. Terminal Board TB2-A1, parts location diagram
Figure 3-10. Terminal Board TB3-A2, parts location diagram
Figure 3-11. Terminal Board TB4-A3, parts location diagram.
Figure 3-12. Chassis terminal boards parts location diagram
Troubleshooting Chart - TM-11-6625-1633-450024
Troubleshooting Chart - TM-11-6625-1633-450025
Stage Gain Measurements
Analysis of Measurements
In-Circuit Transistor Tests
Out-of-Circuit Transistor Tests
Isolating Trouble to a Diode
Chpater 4 REPAIRS AND ADJUSTMENTS
Removal and Replacement of Terminal Boards
Removal and Replacement of Thermistor A4RT2 and A4RT3
Replacement of Tape Cam
Replacement of Frequency Tracking Springs
Klystron Beam Current Adjustment
Modulation Oscillator Output Adjustment
Deviation Accuracy Adjustments
Chapter 5 DEPOT MAINTENANCE AND DEPOT OVERHAUL STANDARDS
Replacement of Klystron
RF Output Frequency Test
Figure 5-1. Rf output frequency, test setup diagram
Figure 5-2. Rf output power, test setup diagram.
Rf Output Resistance Test
RF Noise Level Test
Figure 5-4. Rf noise level measurement, test setup diagram
RF Noise Level Test cont'd
APPENDIX REFERENCES - TM-11-6625-1633-450048
INDEX - TM-11-6625-1633-450049
INDEX - TM-11-6625-1633-450050
Figure 5-5. Tube socket voltage and resistance diagram
Figure 5-6. Resistor, inductor, and capacitor color code diagram
Figure 5-7. Signal generator AN/URM-149, block diagram.
Figure 5-81 . Signal Generator AN/URM-149, schematic diagram (part 1 of 2).
Figure 5-82 . Signal Generator AN/URM-149, schematic diagram (part 2 of 2).
TM-11-6625-1633-45 Signal Generator AN/URM-149 Manual
