AN-GRA-50_serv_user_TM11-5820-467-15_1961.pdf

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1、T M 1 1 - 5 8 2 0 - 4 6 7 - 1 5 D E P A R T M E N T O F T H E A R M Y T E C H N I C A L M A N U A L OPERATOR, ORGANIZATIONAL, FIELD, AND DEPOT MAINTENANCE MANUAL ANTENNA GROUP AN/GRA-50 Headquarters, Department of the Army, Washington 25, D. C. 19 July 1961 W A R N I N G DANGEROUS VOLTAGES EXIST ON

2、THE ANTENNA WHEN IN OPERATION Before working on any part of the antenna, be sure that all equipment has been disconnected from Paragraph Page CHAPTER 1. S e c t i o n I . I I . C H A P T E R 2 . CHAPTER 3. S e c t i o n I . I I . I N T R O D U C T I O N G e n e r a l the power source. DONT TAKE CHAN

3、CES ! S c o p e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Forms and records . . . . . . . . . . . . . . . . . . . . . . . D e s c r i p t i o n a n d d a t a P u r p o s e a n d U s e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Techncal chara

4、cteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C o m p o n e n t s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . . . .

5、 . . . . . . . . . . . . . . . . . . I N S T A L L A T I O N Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C h e c k i n g u n p a c k e d e q u i p m e n t. . . . . . . . . . . . . . . . . . . . . . . . . . Siting . . . . . . . . . . . . . . . . . . . . . .

6、 . . . . . . . . . . . . . . . . . . . . Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M A I N T E N A N C E O p e r a t o r s m a i n t e n a n c e S c o p e o f o p e r a t o r s m a i n t e n a n c e. . . . . . . . . . . . . . . . . . . . . . . Operators

7、 preventive maintenance . . . . . . . . . . . . . . . . . . . . . . . Operators visual inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . O r g a n i z a t i o n a l a n d f i e l d m a i n t e n a n c e ( t h i r d e c h e l o n ) S c o p e o f o r g a n i z a t i o n a l m a i n t e

8、n a n c e . . . . . . . . . . . . . . . . . . . . . . T o o l s , m a t e r i a l s , a n d t e s t e q u i p m e n t r e q u i r e d . . . . . . . . . . . . . . . . O r g a n i z a t i o n a l p r e v e n t i v e m a i n t e n a n c e . . . . . . . . . . . . . . . . . . . . . T r o u b l e s h o o

9、t i n g. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R e p a i r o f r f c a b l e ( t h i r d e c h e l o n ). . . . . . . . . . . . . . . . . . . . . . . T H E O R Y Chapter 4. Antenna theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Theory of an

10、tenna assembly . . . . . . . . . . . . . . . . . . . . . . 5 3 15 25 5 35 45 56 67 77 8 88 98 1 0 8 1 1 8 14 14 12 14 13 14 14 14 17 15 17 16 17 17 17 18 17 19 17 19 20 19 21 19 T h i s r e p r i n t i n c l u d e s a l l c h a n g e s i n e f f e c t a t t h e t i m e o f p u b l i c a t i o n ; c

11、h a n g e s 3 , 5 , a n d 6 . 1 P a r a g r a p h C H A P T E R 5 . S H I P M E N T , L I M I T E D S T O R A G E , A N D D E M O L I T I O N T O P R E V E N T E N E M Y U S E S e c t i o n I .S h i p m e n t a n d l i m i t e d s t o r a g e Disassembly . . . . . . . . . . . . . . . . . . . . . . .

12、 . . . . . . . . . . . . . .2 2 R e p a c k i n g f o r s h i p m e n t o r l i m i t e d s t o r a g e . . . . . . . . . . . . . . . . . . .2 3 I I .D e m o l i t i o n o f m a t e r i a l t o p r e v e n t e n e m y u s e . Authority for demolition . . . . . . . . . . . . . . . . . . . . . . . . .

13、 . . . . .2 4 Methods of destruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 5 APPENDIX I.REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I I .B A S I C I S S U E I T E M S L I S T . . . . . . . . . . . . . . . . . . . . . . . . .

14、. . . . . . . . . . . I I I .MAINTENANCE ALLOCATION CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . P a g e 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 2 2 3 2 5 2 CHANGE No. 7 Changes in force: C 3, C 5, C 6 and C 7 TM 11-5820-467-15 C7 HEADQUARTERS DEPARTMENT OF THE ARMY Washington, DC, 1 July 1989

15、Operators, Organizational, Direct Support, General Support, and Depot Maintenance Manual ANTENNA GROUP AN/GRA-50 (NSN 5985-00-892-0758) TM 11-5820-467-15, 19 July 1961, is changed as follows: Inside front cover. After the inside front cover, add the following warning and first aid safety steps. FIXE

16、D OPERATION WITH LONG RANGE ANTENNAS TELESCOPING WARNING TYPICAL TOWEREXTENDED RANGE ANTENNA MAST ANTENNA DOUBLET ANTENNA NEVER ERECT THESE LONG RANGE ANTENNAS DIRECTLY UNDER POWERLINES. IF YOU MUST ERECT THESE LONG RANGE ANTENNAS NEAR POWERLINES, POWERLINE POLES OR TOWERS, OR BUILDINGS WITH OVERHEA

17、D POWERLINE CONNECTIONS, NEVER PUT THE ANTENNA CLOSER THAN TWO TIMES THE ANTENNA HEIGHT FROM THE BASE OF THE POWERLINE, POLE. TOWER OR BUILDINGS. NEVER ATTEMPT TO ERECT ANY LONG RANGE ANTENNA WITHOUT A FULL TEAM. BEFORE ERECTING ANY LONG RANGE ANTENNA, INSPECT ALL THE PARTS MAKING UP THE ANTENNA KIT

18、. DO NOT ERECT THE ANTENNA IF ANY PARTS ARE MISSING OR DAMAGED. DO AS MUCH OF THE ASSEMBLY WORK AS POSSIBLE ON THE GROUND. WHEN ERECTING THE ANTENNA, ALLOW ONLY TEAM PERSONNEL IN THE ERECTION AREA. MAKE SURE THAT THE AREA FOR THE ANCHORS IS FIRM. IF THE GROUND IS MARSHY OR SANDY, GET SPECIFIC INSTRU

19、CTIONS FROM YOUR CREW CHIEF OR SUPERVISOR ON HOW TO REINFORCE THE ANCHORS. WHEN SELECTING LOCATlONS FOR ANCHORS, AVOID TRAVELED AREAS AND ROADS. IF YOU CANNOT AVOID THESE AREAS, GET SPECIFIC lNSTRUCTlONS FROM YOUR SUPERVISOR AS TO WHAT CLEAR- ANCE YOUR GUY WIRES AND ROPES MUST HAVE OVER THE TRAVELED

20、 AREAS AND ROAD. CLEARLY MARK ALL GUY WIRES AND ROPES WITH THE WARNING FLAGS OR SIGNS SUPPLIED BY YOUR UNIT. IN AN EMERGENCY, USE STRIPS OF WHITE CLOTH AS WARNING STREAMERS. IF YOU SUSPECT THAT POWERLINES HAVE MADE ACCIDENTAL CONTACT WITH YOUR ANTENNA, STOP OPERATING, ROPE OFF THE ANTENNA AREA, AND

21、NOTIFY YOUR SUPERIORS. IF THE WEATHER IN YOUR AREA CAN CAUSE ICE TO FORM ON YOUR LONG RANGE ANTENNA AND ITS GUY WIRES AND ROPES, ADD EXTRA GUYS TO SUPPORT THE SYSTEM. ROPE OFF THE AREA AND POST IT WITH WARNING SIGNS LIKE BEWARE OF FALLING ICE. DO NOT TRY TO ERECT ANY ANTENNA DURING AN ELECTRICAL STO

22、RM. KEEP A SHARP EYE ON YOUR ANCHORS AND GUYS. CHECK THEM DAILY AND IMMEDIATELY BEFORE AND AFTER BAD WEATHER. SAFETY STEPS TO FOLLOW IF SOMEONE IS THE VICTIM OF ELECTRICAL SHOCK DO NOT TRY TO PULL OR GRAB THE INDIVIDUAL IF POSSIBLE, TURN OFF THE ELECTRICAL POWER IF YOU CANNOT TURN OFF THE ELECTRICAL

23、 POWER, PULL, PUSH, OR LIFT THE PERSON TO SAFETY USING A DRY WOODEN POLE OR A DRY ROPE OR SOME OTHER INSULATING MATERIAL SEND FOR HELP AS SOON AS POSSIBLE AFTER THE INJURED PERSON IS FREE OF CONTACT WITH THE SOURCE OF ELECTRICAL SHOCK, MOVE THE PERSON A SHORT DISTANCE AWAY AND IMMEDIATELY START ARTI

24、FICIAL RESUSCITATION Page 5. Paragraph 1.1 is superseded as follows: 1.1.Consolidated Index of Army Publications and Blank Forms Refer to the latest issue of DA Pam 25-30 to determine whether there are new editions, changes or additional publications pertaining to the equipment. Page 5. Paragraph 2

25、is superseded as follows: 2.Maintenance Forms, Records and Reports a. Reports of Maintenance and Unsatisfactory Equipment. Department of the Army forms and procedures used for equipment maintenance will be those prescribed by DA Pam 738-750 as contained in Maintenance Management Update. b. Report of

26、 Item and Packaging Deficiencies. Fill out and forward SF 364 (Report of Discrepancy ROD) as prescribed in AR 735-11-2/DLAR 4140.55/SECNAVINST 4355.73B/AFR 400-54/MCO 4430.3J. c. Transportation Discrepancy Report (TDR) (SF 361). Fill out and forward Transportation Discrepancy Report (TDR) (SF 361) a

27、s prescribed in AR 55-38/NAVSUPINST 4610.33C/AFR 75-18/MCO P4610.19D/DLAR 4500.15. Page 5. Paragraph 2.1 is superseded as follows: 2.1 Reporting Errors and Recommending Improvements You can help improve this manual. If you find any mistakes or if you know of a way to improve the procedures, please l

28、et us know. Mail your letter, DA Form 2028 (Recommended Changes to Publications and Blank Forms), or DA Form 2028-2 located in back of this manual direct to: Commander, US Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-LC-ME-PS, Fort Monmouth, New Jersey 07703-5000. In either

29、 case, a reply will be furnished direct to you. Page 5. Paragraph 2.3 is superseded as follows: 2.3 Destruction of Army Electronics Material Destruction of Army electronics material to prevent enemy use shall be in accordance with TM 750-244-2. Page 5. Paragraph 2.4 is superseded as follows: 2.4 Rep

30、orting Equipment Improvement Recommendations (EIR) If your AN/GRA-50 needs improvement, let us know. Send us an EIR. You, the user, are the only one who can tell us what you dont like about your equipment. Let us know why you dont like the design or performance. Put it on an SF 368 (Product Quality

31、Deficiency Report). Mail it to: Commander, US Amy Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-PA-MA-D, Fort Monmouth, New Jersey 07703-5000. Well send you a reply. Page 9. The following note is added after paragraph llb(3): NOTE To determine the correct length of antenna wire t

32、hat is required to obtain the desired corresponding frequency, use the following formula: This formula should be imprinted on the case of the tape measure as a ready reference and con- venience to installation personnel. Page 14. Paragraph 13.2 is superseded as follows: 13.2. Operators Daily Prevent

33、ive Maintenance Checks and Services B - BEFOREA - AFTERW - WEEKLY ITEM NO. 1 2 3 INTERVAL w ITEM Antenna Assembly Antenna Assembly RF Cable Antenna Assembly ITEM TO BE INSPECTED PROCEDURE Inspect the antenna assembly for completeness (App. II) Inspect the antenna assembly for cleanliness (para. 13.3

34、) Inspect the rf cable for cuts, breaks, and undue strain (fig. 1). Check the antenna assembly for normal operation when connected to a transmitter or receiver. EQUIPMENT IS NOT READY/AVAILABLE IF: RF cable lacks continuity. Weak or no transmission or reception. 4 Page 22. Appendix I is superseded a

35、s follows: APPENDIX I REFERENCES Following is a list of applicable references that are available to the operator and unit repairman of Antenna Group AN/GRA-50. DA Pam 25-30Consolidated Index of Army Publications and Blank Forms. DA Pam 738-750The Army Maintenance Management System (TAMMS). TM 11-582

36、0-295-10Operators Manual for Radio Set AN/GRC-19 (NSN 5820-00-030-0155). TM 11-5820-295-20Organizational Maintenance for Radio Set AN/GRC-19 5820-00-030-0155). TM 11-5820-467-24POrganizational, Direct Support and General Support Maintenance Repair Parts and Special Tools Lists (Including Depot Maint

37、enance Repair Parts and Special Tools) for Antenna Group AN/GRA-50 (NSN 5985-00-892-0758). TM 43-0139Painting Instructions for Field Use. TM 750-244-2Procedures for Destruction of Electronics Material to Prevent Enemy Use (Electronics Command). By Order of the Secretary of the Army: Official: WILLIA

38、M J. MEEHAN II Brigadier General, United States Army The Adjutant General CARL E. VUONO General, United States Army Chief of Staff DISTRIBUTION: To be distributed in accordance with DA Form 12-51 Operator, Unit, and DS/GS requirements for AN/GRA-50. PIN: 018745-007 Changes in force: C 3, C 5, and C

39、6 CHANGE No. 6 TM 11-5620-467-15 C 6 HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON, DC, 9 September 1977 Operators, Organizational, Direct Support, General Support, and Depot Maintenance Manual ANTENNA GROUP AN/GRA-50 (NSN 5985-00-892-0758) TM 11-5820-467-15, 19 July 1961, is changed as follows: Th

40、e title is changed as shown above. Page 5. Paragraph 2 is superseded as follows: 2. Forms and Records a. Reports of Maintenance and Unsatisfactory Equipment. Maintenance forms, records, and reports which are to be used by maintenance personnel at all maintenance levels are listed in and prescribed b

41、y TM 38-750. b. Report of Packaging and Handling De- ficiencies.Fill out and forward DD Form 6 (Packaging Improvement Report) as prescribed in AR 700-58/NAVSUPINST 4030.29/AFR 71- 13/MCO P4030.29A, and DSAR 4145.8. c. Discrepancy in Shipment Report (DISREP) (SF 361). Fill out and forward Discrepancy

42、 in Shipment Report (DISREP) (SF 361) as pre- scribed in AR 55-38/NAVSUPINST 4610.33A/ AFR 75-18/MCO P4610.19B and DSAR 4500.15. Paragraph 2.4 is added after paragraph 2.3. 2-4. Reporting Equipment Recommendations (EIR) EIRs will be prepared using Improvement DA Form 2407 (Maintenance Request). Inst

43、ructions for pre- paring EIRs are provided in TM 38-750, The Army Maintenance Management System. EIRs should be mailed direct to Commander, US Army Electronics Command, ATTN: DRSEL-MA-Q, Fort Monmouth, NJ 07703. A reply will be furnished direct to you. Paragraph 3b, line 7, change 100 watts to read

44、500W. Paragraph 4, line 4, change 100 watts to read 500 W. Page 25. Appendix III is superseded as follows: APPENDIX Ill MAINTENANCE ALLOCATION Section 1. INTRODUCTION 1. General specific maintenance functions on repairable items and components and the tools and equip- This appendix provides a summar

45、y of thement required to perform each function. This maintenance operations for AN/GRA-50. It appendix may be used as an aid in planning authorizes categories of maintenance formaintenance operations. 1 2. Maintenance Function Maintenance functions will be limited to and defined as follows: a. Inspe

46、ct. To determine the serviceability of an item by comparing its physical, mechanical, and/or electrical characteristics with estab- lished standards through examination. b. Test. To verify serviceability and to detect incipient failure by measuring the mechanical or electrical characteristics of an

47、item and comparing those characteristics with prescribed standards. c. Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean (decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hy- draulic fluids, or compressed air sup

48、plies. d. Adjust. To maintain, within prescribed limits, by bringing into proper or exact position, or by setting the operating characteristics to the specified parameters. e. Align. To adjust specified variable elements of an item to bring about optimum or desired performance. f. Calibrate. To dete

49、rmine and cause correc- tions to be made or to be adjusted on instru- ments or test measuring and diagnostic equip- ments used in precision measurement. Consists of comparisons of two instruments, one of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being compared. g. Install. The act of emplacing, seating, or fixing into position an item, part, module (component or assembly) in a manner to allow the proper functioning of the equipment or system. h. Replace. The act of substituting a service- able l