US Army Field Artillery School: Install and PErform Unit-Level Maintenance on AN/PRC-104(A) and AN/GRC-213
Lesson 1. Install and Reinstall AN/PRC-104(A) and AN/GRC-213
Figure 2. Mount part of MK-2447/GRC-213.
Figure 3. MK-1447/GRC-213.
Figure 4. Antenna bracket.
Figure 5. Antenna mounting.
Antenna base installation
Figure 6. Whip antenna.
Figure 7. Mounting antenna on bracket.
System cabling
Figure 8. Ground and (RF) connections.
Figure 9. Installing loud speaker.
Figure 10. Identification of components.
Installation and Preparation for Use
Figure 11. AN/PRC-104(A).
Figure 12. Latching together components.
Figure 13. Installation of components.
Antenna installation instructions for verifying installation.
Figure 14. Erecting NVIS antenna.
Figure 15. AN/GRA-50 antenna.
Table 1. Dipole antenna wire length (AN/GRA-50).
Dipole antenna installation.
Figure 16. Determining wire length and unwinding wire.
Figure 17. Reel assembly and two-support dipole antenna.
Figure 18. Sloping and inverted V dipole antennas.
Figure 19. Connector-cable location diagram.
Grounding Requirements
Figure 20. AN/PRC-104(A) for manpack operation.
Practice Exercise - ss071770036
Lesson 2: Evaluate Operation of AN/PRC-104(A) and AN/GRC-213 Radio Sets
Figure 21. Identification of components.
Figure 22. Control identification.
Receiver function.
Transmitter function.
System check.
Table 2. EPC steps.
Explanation of EPC steps.
Table 3. International stations.
Table 3. International stations. (Cont) - ss071770046
Table 3. International stations. (Cont) - ss071770047
Summary - ss071770048
Lesson 3: System Troubleshoot AN/PRC-104(A) and AN/GRC-213 to a Defective Component, Cable, or Accessory and Repair
Flowcharts
Figure 23. System troubleshooting the AN/GRC-213.
Figure 24. Troubleshooting AN/PRC-104(A).
System Troubleshooting AN/GRC-213.
Figure 25. Test equipment and interconnections.
Figure 26. Fault isolation flowchart (sheet 1).
Figure 27. Fault isolation flowchart (sheet 2).
Figure 28. Fault isolation flowchart (sheet 3).
Figure 29. Fault isolation flowchart (sheet 4).
Figure 30. Fault isolation flowchart (sheet 5).
Figure 31. Fault isolation flowchart (sheet 6).
Figure 32. Fault isolation flowchart (sheet 7).
Receiver-exciter removal instructions.
Figure 33. Connectors and components.
Amplifier-coupler removal instructions.
Amplifier-coupler installation instructions.
Amplifier-power supply removal instructions.
Amplifier-power supply installation instructions.
AN/PRC-104(A) power cable replacement instructions.
Telegraph key replacement instructions.
Figure 34. Dipole antenna.
Replacement and Repair
Practice Exercise - ss071770072
Practice Exercise (Cont) - ss071770073
Lesson 4. Perform Unit-Level Preventive Maintenance Checks and Services on AN/PRC-104(A) and AN/GRC-213
Preventive Maintenance
Table 4. PMCS extracted from TM 11-5820-923-12.
Table 4. PMCS extracted from TM 11-5820-923-12 (continued).
Practice Exercise - ss071770078
Summary - ss071770079
Lesson 1. Install and Reinstall AN/PRC-104(A) and AN/GRC-213
Figure 2. Mount part of MK-2447/GRC-213.
Figure 3. MK-1447/GRC-213.
Figure 4. Antenna bracket.
Figure 5. Antenna mounting.
Antenna base installation
Figure 6. Whip antenna.
Figure 7. Mounting antenna on bracket.
System cabling
Figure 8. Ground and (RF) connections.
Figure 9. Installing loud speaker.
Figure 10. Identification of components.
Installation and Preparation for Use
Figure 11. AN/PRC-104(A).
Figure 12. Latching together components.
Figure 13. Installation of components.
Antenna installation instructions for verifying installation.
Figure 14. Erecting NVIS antenna.
Figure 15. AN/GRA-50 antenna.
Table 1. Dipole antenna wire length (AN/GRA-50).
Dipole antenna installation.
Figure 16. Determining wire length and unwinding wire.
Figure 17. Reel assembly and two-support dipole antenna.
Figure 18. Sloping and inverted V dipole antennas.
Figure 19. Connector-cable location diagram.
Grounding Requirements
Figure 20. AN/PRC-104(A) for manpack operation.
Practice Exercise - ss071770036
Lesson 2: Evaluate Operation of AN/PRC-104(A) and AN/GRC-213 Radio Sets
Figure 21. Identification of components.
Figure 22. Control identification.
Receiver function.
Transmitter function.
System check.
Table 2. EPC steps.
Explanation of EPC steps.
Table 3. International stations.
Table 3. International stations. (Cont) - ss071770046
Table 3. International stations. (Cont) - ss071770047
Summary - ss071770048
Lesson 3: System Troubleshoot AN/PRC-104(A) and AN/GRC-213 to a Defective Component, Cable, or Accessory and Repair
Flowcharts
Figure 23. System troubleshooting the AN/GRC-213.
Figure 24. Troubleshooting AN/PRC-104(A).
System Troubleshooting AN/GRC-213.
Figure 25. Test equipment and interconnections.
Figure 26. Fault isolation flowchart (sheet 1).
Figure 27. Fault isolation flowchart (sheet 2).
Figure 28. Fault isolation flowchart (sheet 3).
Figure 29. Fault isolation flowchart (sheet 4).
Figure 30. Fault isolation flowchart (sheet 5).
Figure 31. Fault isolation flowchart (sheet 6).
Figure 32. Fault isolation flowchart (sheet 7).
Receiver-exciter removal instructions.
Figure 33. Connectors and components.
Amplifier-coupler removal instructions.
Amplifier-coupler installation instructions.
Amplifier-power supply removal instructions.
Amplifier-power supply installation instructions.
AN/PRC-104(A) power cable replacement instructions.
Telegraph key replacement instructions.
Figure 34. Dipole antenna.
Replacement and Repair
Practice Exercise - ss071770072
Practice Exercise (Cont) - ss071770073
Lesson 4. Perform Unit-Level Preventive Maintenance Checks and Services on AN/PRC-104(A) and AN/GRC-213
Preventive Maintenance
Table 4. PMCS extracted from TM 11-5820-923-12.
Table 4. PMCS extracted from TM 11-5820-923-12 (continued).
Practice Exercise - ss071770078
Summary - ss071770079
