AN-PRC-47_serv_user_TM11-5820-509-12_1974.pdf

TM 11-5820-509-12 TECHNICAL MANUAL OPERATORS AND ORGANIZATIONAL MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST RADIO SET AN/PRC-47 H E A D Q U A R T E R S , D E P A R T M E N T O F T H E A R M Y JULY 1974 WARNING DO NOT store a charged or activated battery in Case, Radio Set CY-3700/PRC-47. Storage for a long period of time may allow hydrogen fumes from a battery to seep into Receiver Transmitter, Radio RT-671 /PRC-47. When the receiver-transmitter unit is removed from the case and energized, an explosion may occur. Any receiver- transmitter unit that is suspected of containing hydrogen fumes should be vented by removing Cover, Panel CW- 647/PRC-47 and then removing the receiver-transmitter chassis from its case. Before stowing or shipping a radio set, the used batteries should be exchanged for unused batteries. Operator and maintenance personnel should be familiar with the requirements of TB SIG 291 before attempting installation or operation of the equipment covered in this manual. Failure to follow the requirements of TB SIG 291 can result in injury or DEATH. DEATH or SERIOUS injury may result from hazards in this equipment unless proper safety measures are ob- served when operating and maintaining the equipment. In addition to the 115- volt primary power source used in shelters, dc voltages to 1500 volts exist in the receiver-transmitter. *TM 11-5820-509-12 TECHNICAL MANUAL HEADQUARTERS DEPARTMENT OF THE ARMY No. 11-5820 -509-12 WASHINGTON, D.C., 26 July 1974 OPERATORS AND ORGANIZATIONAL MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST RADIO SET AN/PRC-47 Current as of 22 April 1974 CHAPTER 1.INTRODUCTION SECTIONI.General Paragraph Page Scope .1-11-1 Indexes of publications .1-21-1 Forms and records. .1-31-1 II.Description and data Purpose and use .1-41-1 Technical characteristics.1-51-2 Items comprising an operable equipment .1-61-2 Description CHAPTER2.INSTALLATION SECTIONI.Service upon receipt of equipment Siting instructions.2-12-1 Shelter requirements .2-22-1 Packaging data.2-32-1 Unpacking instructions.2-42-1 Checking unpacked equipment .2-52-4 II.Installation instructions Tools, test equipment, and materials required.2-62-4 Assembly of component items.2-72-4 Vehicular installation. .2-82-5 Power check .2-92-6 Preparation of radio set for man/pack transportation.2-102-6 CHAPTER3.OPERATION SECTIONI.Controls and indicators Control panel .3-13-1 Description of front panel controls, indicators, and receptacles.3-23-1 II.Operation under usual conditions General .3-33-3 Preliminary starting procedures .3-43-3 Receive operation.3-53-3 Transmit operation .3-63-3 Voice (usb) operation .3-73-4 Telegraph (cw) operation .3-83-4 Teletype (fsk) operation.3-93-4 Remote control operation .3-103-4 Tuning power amplifier.3-113-4 Tuning with 50-ohm load .3-123-6 Stopping procedures .3-133-6 III.Operation under unusual conditions General .3-143-7 Operation in extreme cold.3-153-7 Operation in tropical conditions.3-163-7 Operation in desert conditions .3-173-7 Emergency operation .3-183-7 Operation during electronic jamming .3-193-7 _ *This manual supersedes TM 11-5820-509 - 12, 19 November 1963 and TM 11 5820 - 509-12P, 30 September 1963. i TM 11-5820-509-12 Section III (continued )ParagraphPage Antijamming techniques.3-203-8 CHAPTER4.OPERATOR AND ORGANIZATIONAL MAINTENANCE SECTIONI.Operators maintenance Scope of operators maintenance .4-14-1 Materials required.4-24-1 Operators preventive maintenance.4-34-1 Operators preventive maintenance checks and services periods.4-44-1 Daily preventive maintenance checks and services chart .4-54-1 Cleaning .4-64-1 II.Organizational maintenance Scope of organizational maintenance .4-74-2 Test equipment, tools, and material required.4-84-2 Organizational maintenance.4-94-2 Weekly maintenance .4-104-2 Weekly preventive maintenance checks and services chart .4-114-2 Quarterly maintenance.4-124-2 Quarterly preventive maintenance checks and services chart .4-134-3 Touch up painting instruction. .4-144-3 III. Organizational troubleshooting General .4-154-3 Organizational troubleshooting chart.4-164-3 Removal and replacement procedures .4-174-3 APPENDIXA.REFERENCES.A-1 B.BASIC ISSUE ITEMS LIST AND ITEMS TROOP INSTALLED OR AUTHORIZED LIST AND ORGANIZATIONAL MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LIST. SECTION I. Introduction.B-1 II.Basic issue items list (not applicable III.Items troop installed or authorized list (not applicable) IV. Repair tools list.B-3 V.Special tools list (not applicable) VI. Federal Stock Number and Part Number (Not applicable) APPENDIX C.MAINTENANCE ALLOCATION SECTION I.Introduction.C-1 II.Maintenance allocation chart .C-3 LIST OF ILLUSTRATIONS Figure No.TitlePage 1-1Radio Set AN/PRC-47.1-0 1-2Antenna AS-1320/PRC-47.1-6 1-3Ac and dc power cables.1-6 1-4Radio set rucksack frames.1-7 1-5Case, Radio Set CY-3700/PRC-47.1-8 1-6Receiver-Transmitter, Radio RT-671 /PRC-47.1-9 1-7Radio set ground plane radial system placement.1-10 1-8Radio set accessories.1-11 2-1Packaging details, Radio Set Case CY-3700/PRC-47 (less electrolyte).2-2 2-2Case. Radio Set CY-3700/PRC-47, packing details.2-3 2-3Receiver-transmitter rucksack frame packing.2-7 2-4Battery rucksack frame packing.2-7 3-1Receiver-Transmitter. Radio RT-671 /PRC-47, front panel controls, indicators, and receptacles.3-1 3-2Power amplifier load-tune chart.3-6 3-3Power amplifier load and tune controls.3-6 B-1Receiver-Transmitter, Radio RT-671/PRC-47, parts location.B-4 ii TM 11-5820-509-12 Figure 1-1. Radio Set AN/PRC-47 1-0 TM 11-5820-509-12 CHAPTER 1 INTRODUCTION Section I. GENERAL 1-1. Scope This manual describes Radio Set AN /PRC-47 (fig. 1-1) and includes instructions for installation, operation, or- ganizational maintenance, shipment and limited storage, and demolition to prevent enemy use. The manual pro- vides instructions for operation under usual and unusual conditions, and includes procedures for the cleaning, in- spection, and maintenance of the AN/PRC-47 by the op- erator and organizational maintenance personnel. The repair parts list is contained in Appendix B and the maintenance allocation in Appendix C. 1-2. Indexes of Publications a. DA Pam 310-4. Refer to the latest issue of DA Pam 310-4 to determine whether there are new editions, changes, or additional publications pertaining to this equipment. b. DA PAM 310-7. Refer to DA Pam 310-7 to deter- mine whether there are modification work orders (MWOs) pertaining to this equipment. 1-3. Forms and Records a. Reports of Maintenance and Unsatisfactory Equip- ment. Maintenance forms, records, and reports which are to be used by maintenance personnel at all maintenance levels are listed in and prescribed by TM 38-750. b. Report of Packaging and Handling Deficiencies. Fill out and forward DD Form 6 (Report of Packaging and Handling Deficiencies) as prescribed in AR 700- 58/NAVSUP PUB 378/AFR 71-4/MCO P4030.29, and DSAR 4145.8. c. Discrepancy in Shipment Report DISREP SF 361. Fill out and forward Discrepancy in Shipment Re- port (DISREP) (SF 361) as prescribed in AR 65- 38/NAVSUPINST 4610.33/AFM 75-18MCO P4610.19A, and DSAR 4500.15. d. Reporting of Equipment Manual Improvements. Re- port of errors, omissions, and recommendations for im- proving this publication by the individual user is encour- aged. Reports should be submitted on DA form 2028 (Recommended Changes to Publications and Blank Forms) and forwarded direct to Commander, U.S. Army Electronics Command, ATTN: AMSEL- Fort Monmouth, NJ 07703. e. Administrative Storage. For procedures, forms and records, and inspections required during administrative storage of this equipment, refer to TM 740-90-1. f. Destruction of Army Materiel to Prevent Enemy Use. For information on this subject, refer to TM 750-244-2. Section II. DESCRIPTION AND DATA 1-4. Purpose and Use a. Purpose. Radio Set AN/PRC-47 (fig. 1-1) is a high frequency radio communications system. The radio set primarily provides 10,000 channels of upper sideband (usb) voice transmission and reception, continuous wave (cw) telegraphy, or frequency shift keying (fsk) teletype in the 2.000- 11.999-mHz frequency range. The radio set can be operated from its own control panel or con- trolled by a remote power control panel, such as Control Group AN/GRA-6, for at least a 2-mile distance. b. Use. Radio Set AN/PRC-47 is used for two-way high-frequency (hf) radio communications. It is nor- mally used in the portable (man carried) configuration, but can be vehicular-mounted or used as a fixed station, such as in a shelter. In the portable configuration, one member of the two- team carries the receiver- transmitter, and the other member carries the battery pack and accessories. When the radio set is vehicular- power is supplied from the dc vehicular