CHAPTER 1 INTRODUCTION - TM-11-12580012
Figure 1. Signal Generator AN/URM-70.
Figure 2. Signal Generator AN/URM-70, with cables and adapters
Packaging Data
Description of Cables and Connectors
CHAPTER 2 INSTALLATION - TM-11-12580017
Figure 3. Typical packaging of Signal Generator AN/URM-70
Figure 4. Signal Generator AN/URM-70, tube location
Service Upon Receipt of Used or Reconditioned
CHAPTER 3 OPERATION
Figure 5. Signal Generator SG-3/U, front panel
Section II. OPERATION UNDER USUAL CONDITIONS
Adjustments for Unmodulated Output (Cw)
Operation in Tropical Climates
CHAPTER 4 ORGANIZATIONAL MAINTENANCE
Figure 6. DA Form 11-238
Figure 7. DA Form 11-239
Performing Preventive Maintenance
Section III. TROUBLESHOOTING AT ORGANIZATIONAL MAINTENANCE LEVEL
Equipment Performance Checklist
CHAPTER 5 THEORY
Rf Oscillator V5
Figure 9. R oscillator circuit
Figure 10. Modulator V10 and V11
First Doubler V6
Rf Amplifier V7 and Variable Attenuator
Figure 12. Rf amplifier V7
Figure 13. Second and third doublers
Figure 14. Output indicator circuit
Figure 15. Audio-oscillator circuit, 1,000-cps operation
Deviation Indicator Circuit V1 and V2
Surge Circuit V16 and V17
Power Supply V12, V13, V14, and V15, and Filter Assembly - TM-11-12580044
Power Supply V12, V13, V14, and V15, and Filter Assembly - TM-11-12580045
Chapter 6 FIELD MAINTENANCE
Troubleshooting Data
Power Supply Circuit Failures
Troubleshooting Chart - TM-11-12580049
Troubleshooting Chart - TM-11-12580050
Section II. REPAIRS
Figure 19. Signal Generator SG-3/U, top view of interior
Figure 20. Signal Generator SG-3/U, bottom view of interior
Figure 21. Rf assembly, left side view
Figure 22. Rf assembly, top view
Figure 23. Mounting plate
Figure 24. Typical tuning capacitor
Figure 26. Signal generator, shooing attenuators
Figure 27. Typical attenuator core
Figure 28. Frequency range selector switch, interior
Figure 30. Modulation switch assembly, top view
Figure 32. Deviation multiplier switch assembly
Figure 33. Filter assembly, interior view
Figure 34. Audio oscillator and deviation indicator assembly, bottom view
Figure 35. Audio oscillator and deviation indicator assembly, top view
Figure 36. Power supply section, bottom view
Figure 37. Voltage, resistance, and parts location of terminal boards
Figure 38. Tube-socket voltage and resistance diagram
Section III. ALINEMENT AND ADJUSTMENT PROCEDURES
Figure 39. Signal Generator SG4/U, alinement points
Alining Second Doubler
Calibrating Deviation Multiplier
Figure 41. Deviation frequency compensation setup
Output Tests
Rf Distortion Test
Chapter 7 SHIPMENT AND LIMITED STORAGE AND DEMOLITION TO PREVENT ENEMY USE
Section II. DEMOLITION OF MATERIEL TO PREVENT ENEMY USE
Figure 42. Resistor color code
Figure 43. Capacitor color code
TM-11-1258 Signal Generator AN/URM-70 Manual
Figure 1. Signal Generator AN/URM-70.
Figure 2. Signal Generator AN/URM-70, with cables and adapters
Packaging Data
Description of Cables and Connectors
CHAPTER 2 INSTALLATION - TM-11-12580017
Figure 3. Typical packaging of Signal Generator AN/URM-70
Figure 4. Signal Generator AN/URM-70, tube location
Service Upon Receipt of Used or Reconditioned
CHAPTER 3 OPERATION
Figure 5. Signal Generator SG-3/U, front panel
Section II. OPERATION UNDER USUAL CONDITIONS
Adjustments for Unmodulated Output (Cw)
Operation in Tropical Climates
CHAPTER 4 ORGANIZATIONAL MAINTENANCE
Figure 6. DA Form 11-238
Figure 7. DA Form 11-239
Performing Preventive Maintenance
Section III. TROUBLESHOOTING AT ORGANIZATIONAL MAINTENANCE LEVEL
Equipment Performance Checklist
CHAPTER 5 THEORY
Rf Oscillator V5
Figure 9. R oscillator circuit
Figure 10. Modulator V10 and V11
First Doubler V6
Rf Amplifier V7 and Variable Attenuator
Figure 12. Rf amplifier V7
Figure 13. Second and third doublers
Figure 14. Output indicator circuit
Figure 15. Audio-oscillator circuit, 1,000-cps operation
Deviation Indicator Circuit V1 and V2
Surge Circuit V16 and V17
Power Supply V12, V13, V14, and V15, and Filter Assembly - TM-11-12580044
Power Supply V12, V13, V14, and V15, and Filter Assembly - TM-11-12580045
Chapter 6 FIELD MAINTENANCE
Troubleshooting Data
Power Supply Circuit Failures
Troubleshooting Chart - TM-11-12580049
Troubleshooting Chart - TM-11-12580050
Section II. REPAIRS
Figure 19. Signal Generator SG-3/U, top view of interior
Figure 20. Signal Generator SG-3/U, bottom view of interior
Figure 21. Rf assembly, left side view
Figure 22. Rf assembly, top view
Figure 23. Mounting plate
Figure 24. Typical tuning capacitor
Figure 26. Signal generator, shooing attenuators
Figure 27. Typical attenuator core
Figure 28. Frequency range selector switch, interior
Figure 30. Modulation switch assembly, top view
Figure 32. Deviation multiplier switch assembly
Figure 33. Filter assembly, interior view
Figure 34. Audio oscillator and deviation indicator assembly, bottom view
Figure 35. Audio oscillator and deviation indicator assembly, top view
Figure 36. Power supply section, bottom view
Figure 37. Voltage, resistance, and parts location of terminal boards
Figure 38. Tube-socket voltage and resistance diagram
Section III. ALINEMENT AND ADJUSTMENT PROCEDURES
Figure 39. Signal Generator SG4/U, alinement points
Alining Second Doubler
Calibrating Deviation Multiplier
Figure 41. Deviation frequency compensation setup
Output Tests
Rf Distortion Test
Chapter 7 SHIPMENT AND LIMITED STORAGE AND DEMOLITION TO PREVENT ENEMY USE
Section II. DEMOLITION OF MATERIEL TO PREVENT ENEMY USE
Figure 42. Resistor color code
Figure 43. Capacitor color code
TM-11-1258 Signal Generator AN/URM-70 Manual
