Chapter 1. THEORY
Figure 8.1 Gain and Frequency response test setup.
Gain and Frequency Response Test
Figure 8-2. Distortion and noise level test setup.
Distortion and Noise Level Test
Summary of Performance Standards
TECHNICAL MANUAL
Special Requirements
Figure 1. Amplifier, Radio Frequency AM1881/U, block diagram.
Figure 2. First and second amplifiers and cathode follower, schematic diagram
Figure 3. Power transformer and power rectifier, schematic diagram.
Figure 4. Series regulator, regulator control, and voltage reference, schematic diagram.
Chapter 2. TROUBLESHOOTING
Section II. TROUBLESHOOTING AMPLIFIER, RADIO FREQUENCY AM-1881/11
Test Setup
Figure 5. Tube socket and terminal board voltage and resistance diagram
Stage-Gain Measurements
Troubleshooting Chart.
Figure 7. Rf amplifier chassis, bottom view.
Section Ill. REPAIRS AND ADJUSTMENTS
RF Amplifier Gain Adjustment
Adjustment Procedure.
Chapter 3. FINAL TESTING
Figure 9. Connections for final testing.
Figure 10. MIL-STD resistor color-code marking.
Figure 11. MIL-STD capacitor color-code marking.
Figure 12. Amplifier, Radio Frequency AM-1881/U, schematic diagram
Appendix I. REFERENCES - TM-11-6625-353-350031
TM-11-6625-353-35 Amplifers Radio Frequency AM-1881/U Manual
Figure 8.1 Gain and Frequency response test setup.
Gain and Frequency Response Test
Figure 8-2. Distortion and noise level test setup.
Distortion and Noise Level Test
Summary of Performance Standards
TECHNICAL MANUAL
Special Requirements
Figure 1. Amplifier, Radio Frequency AM1881/U, block diagram.
Figure 2. First and second amplifiers and cathode follower, schematic diagram
Figure 3. Power transformer and power rectifier, schematic diagram.
Figure 4. Series regulator, regulator control, and voltage reference, schematic diagram.
Chapter 2. TROUBLESHOOTING
Section II. TROUBLESHOOTING AMPLIFIER, RADIO FREQUENCY AM-1881/11
Test Setup
Figure 5. Tube socket and terminal board voltage and resistance diagram
Stage-Gain Measurements
Troubleshooting Chart.
Figure 7. Rf amplifier chassis, bottom view.
Section Ill. REPAIRS AND ADJUSTMENTS
RF Amplifier Gain Adjustment
Adjustment Procedure.
Chapter 3. FINAL TESTING
Figure 9. Connections for final testing.
Figure 10. MIL-STD resistor color-code marking.
Figure 11. MIL-STD capacitor color-code marking.
Figure 12. Amplifier, Radio Frequency AM-1881/U, schematic diagram
Appendix I. REFERENCES - TM-11-6625-353-350031
TM-11-6625-353-35 Amplifers Radio Frequency AM-1881/U Manual
