BC-191C_E_serv_user_1941.pdf

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1、INSTRUCTION BOOK FOR RADIO TRANSMITTER BC-191-C RADIO TRANSMITTER BC-191-D RADIO TRANSMITTER BC-191-E AND ASSOCIATED EQUIPMENT MANUFACTURED BY GENERAL ELECTRIC COMPANY U.S.A. . EPLPr tED BY .t-u. .TI11 1-.t.t:Jt? (. t e . _l/l:._di.fl.J!.eR.t.b er I? t;?,.,. RESTRICTED PUBLISHED BY AUTHORITY OF THE

2、CHIEF SIGNAL OFFICER ORDER NO. 6868-NY-41 ORDER NO. 1488-NY-42 INSTRUCTION BOOK FOR RADIO TRANSMITTER BC-191-C RADIO TRANSMITTER BC-191-D RADIO TRANSMITTER BC-191-E AND ASSOCIATED EQUIPMENT RESTRICTED NOTICE-This document contains information affecting the national defense of the United States withi

3、n the meaning of the Espionage Act (U.S.C. 50:31, 32). The transmission of this document or the revelation of its contents in any manner to any unauthorized person is prohibited. The information contained in documents marked RESTRICTED will not be communicated to the public or to the press, but it m

4、ay be communicated to any person known to be in the service of the United States and to persons of undoubted loyalty and discretion who are co-operating in government work. (A 3805). PUBLISHED BY AUTHORITY OF THE CHIEF SIGNAL OFFICER ORDER NO. 6868-NY-41 775 (1041) ORDER NO. 1488-NY-42 80 (10U) (GEI

5、-13934A) SAFETY TO HUMAN LIFE OPERATION OF THIS EQUIPMENT INVOLVES THE USE OF HIGH VOLTAGES WHICH ARE DANGER- OUS TO LIFE. OPERATING PERSONNEL MUST AT ALL TIMES OBSERVE ALL SAFETY REGULATIONS. DO NOT CHANGE TUBES OR MAKE ADJUSTMENTS INSIDE EQUIPMENT WITH HIGH-VOLT AGE SUP- PLY ON. DO NOT COMPLETE OR

6、 MAINTAIN ANY CONNECTION BETWEEN RADIO TRANSMIT- TER AND DYNAMOTOR UNIT UNLESS ALL DUPLI- CATE UNUSED SOCKETS ON THE RADIO TRANS- MITTER ARE COVERED BY SOCKET CAPS WITH CATCHES PROPERLY SNAPPED IN PLACE. KEEP AWAY FROM LIVE CIRCUITS 1. Under no circumstances should any person be per- mitted to opera

7、te the dynamotor unit with relay fuse box covers or end bells removed; or to replace fuses with power on; or to remove, place, or handle removed plugs with the dynamotor unit running. 2. Under no circumstances adjust circuits or service the equipment when only the carrier is keyed off. The radio tra

8、nsmitter uses a grid-bias keying circuit, which does not remove high voltage when the key is open. DO NOT OPERATE THE EQUIPMENT WITH SHIELDS REMOVED -m- TABLE OF CONTENTS Page I. DESCRIPTION OF COMPLETE EQUIPMENT GENERAL. . . . . . . . . 1 ANTENNA TUNING UNIT BC-306-A. . . . . . . . . . . . . . . .

9、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 CASE CS-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 DYNAMOTOR UNIT BD-77-C. . . . . . . . 2 RADIO CONTROL

10、 BOX BC-309 . . . . . 4 RADIO TRANSMITTERS BC-191-C, BC-191-D, AND BC-191-E . . . . . -I- TRANSMITTER TUNING UNITS TU-3-B, ETC. . . . . . . . 5 CO-ORDINATION OF UNITS. . . . . . . . . . G AIRCRAFT RADIO SETS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11、 . . . . . . . . . . . . . . . . . . 6 LIST OF MAIN UNITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 II. EMPLOYMENT INSTALlATION . R Radio Transmitters BC-191-C, BC-191 -D, and BC-191-E . . . . . 8 Radio Cont

12、rol Box BC-309. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Dynamotor Unit BD-77-C . . . . . . 8 Junction Boxes TM-178 and TM-17R-A . . . . . 9 Cords. . . . . 9 Antennas. . . . . . . . . . . . . . . . . . . . . . . . .

13、 . . . . . . . . . . . . . . . . . . . . . . . . . 9 Antenna Tuning Unit BC-306-A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Reel RL-30-B and Connector Clamp MC-163 . . . . 9 Interconnection with Radio Receiver in Aircraft . , . . 1

14、1 PREPARATION FOR USE . 11 Radio Transmitters BC-191-C, BC-191-D, and BC-191-E. . . . . 11 Dynamotor Unit BD-77-C . . 13 OPERATION . . . . . 13 At High Altitudes . : . . . . . 13 Transmitter Adjustment . . . . . . . . . . 13 Antenna Circuits . . . . . . . . . 15 Dynamotor Unit BD-77-C . . . . . . .

15、. . . 17 Reel RL-30-B . . . . . . 17 Operating Routine . . . . . . 18 SUMMARY COVERING NORMAL OPERATION . . . . 18 III. DETAILED FUNCTIONING OF PARTS RADIO TRANSMITTERS BC-191-C, BC-191-D, AND BC-191-E . . 20 VACUUM TUBES . . . . . . . . . 27 TRANSMITTER TUNING UNITS . : . . . . . . 27 ANTENNA TUNIN

16、G UNIT BC.306-A . . . . . 28 DYNAMOTOR UNIT BD-77-C. . . . . . . . . . . . 29 IV. MAINTENANCE INSPECTION . . . . . . . 30 LUBRICATION . . 30 SERVICE NOTES . . . . . . . 31 V. SUPPLEMENTARY DATA AND LIST OF REPLACEABLE PARTS TABLE OF REPLACEABLE PARTS . . 40 TABLE OF INTERCHANGEABLE PARTS . . 55 RENE

17、WAL PARTS . . . . . . . . 56 -v- Fig. 1. Fig. 2. Fig. 3. Fig. 4. Fig. 5. Fig. 6. Fig. 7. Fig. 8. Fig. 9. Fig. 10. Fig. 11. Fig. 12. Fig. 13. Fig. 14. Fig. 15. Fig. 16. Fig. 17. Fig. 18. Fig. 19. Fig. 20. Fig. 21. Fig. 22. Fig. 23. Fig. 24. Fig. 25. Fig. 26. Fig. 27. Fig. 28. Fig. 29. Fig. 30. Fig. 3

18、1. Fig. 32. Fig. 33. Fig. 34. Fig. 35. Fig. 36. Fig. 37. Fig. 38. Fig. 39. LIST OF ILLUSTRATIONS Page Radio Transmitter BC-191-C, BC-191-D, or BC-191-E, and Associated Equipment . . viii Antenna Tuning Unit BC-306-A . 1 Case CS-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Dynamotor Unit BD-77-C . . 3 Radio Control Box BC-309 . Radio Transmitter BC-191-C with Transmitter Tuning Unit TU-22-B in place . 4 Typical Front View of a Transmitter Tuning Unit without a Band Change Switch . 5 Typic

20、al Front View of a Transmitting Tuning Unit with a Band Change Switch . . G Mounting FT-115-B . . . 8 Radio Transmitter BC-191-C with Tube Compartment Shield Removed and Transmitter Tuning Unit TU-22-B Being Inserted . 10 Radio Transmitter BC-191-C, Filament Resistor and Terminal Board . . 12 Radio

21、Transmitter BC-191-D or BC-191-E, Filament Resistor and Terminal Board . . . 12 Antenna Reactanc Curve . . 15 Radio Transmitter BC-191-C, BC-191-D, or BC-191-E, Functional Diagram of Radio-Fre- quency and High-voltage Circuits . 20 Radio Transmitter BC-191-C, BC-191-D, or BC-191-E, Functional Diagra

22、m of Antenna Tuning Circuits . . . 21 Radio Transmitter BC-191-C, BC-191-D, or BC-191-E, Fun tiona Diagram of Audio-Frequency Circuits- Tone Operation . 22 Radio Transmitter BC-191-C, BC-191-D, or BC-191-E, Functional Diagram of Audio-Fre- quency Circuits-CW Operation (Side Tone) . . . . 23 Radio Tr

23、ansmitter BC-1 91-C, BC-1 91-D, or BC-191-E, Functional Diagram of Audio-Frequency Circuits- Voice Operation . . . . 24 Radio Transmitter BC-191-C, BC-191-D, or BC-191-E, Functional Diagram of Low-Voltage and Control Circuits-D-C Operation . . . 25 Radio Transmitter BC-191-C, BC-191-D, or BC-191-E,

24、Funclional Diagram of Low-Voltage and Control Circuits- A-C Operation . 25 Tube VT-4-C, Characteristic Curves . . . . 27 Tube VT -25, Characteristic Curves . . . 27 Antenna Tuning Unit BC-306-A, Schematic Diagram . 28 Dynamotor Unit BD-77-C, Schematic Diagram . . 20 Antenna Tuning Unit BC-306-A, Jnt

25、erior View . 61 Dynamotor Unit BD-77-C, Mounting FT-107 and Low-Voltage End Bell Removed . 62 Dynamotor Unit BD-77-C, Mounting FT-107 and High-Voltage End Bell Removed . 63 Dynamotor Unit BD-77-C, Top View with Mounting FT-107 and Relay-fuse Box Cover Re- moved . . . . . 64 Radio Control Box BC-309,

26、 Interior View . . . . . 65 Radio Transmitter BC-191-C, Tube Compartment Shield and Top Cover Off, and Transmitter Tuning Unit in Place . . 66 Radio Transmitter BC-191-D or BC-191-E, Tube Compartment Shield and Top Cover Off, and Transmitter Tuning Unit in Place . 67 Radio Transmitter BC-191-C or BC

27、-191-D, Rear View; Mounting FT-151-A and Shields Re- moved . 68 Radio Transmitter BC-191-E, Rear View; Mounting FT -151-A and Shields Removed . 69 Radio Transmitter BC-191-C or BC-191-D Rear View; Mounting FT-151-A and Shields Re- moved . . 70 Radio Transmitter BC-191-E, Rear View; Mounting FT-151-A

28、 and Shields Removed . . 71 Radio Transmitter BC-191-C or BC-191-D, Bottom Rear View; Mounting FT-151-A and Shields Removed . 72 Radio Transmitter BC-191-E, Bottom Rear View; Mounting FT-151-A and Shields Removed . 73 Radio Transmitter BC-191-C, BC-1 91-D, or BC-191-E, Detail View of Interior . 74 T

29、ransmitter Tuning Unit TU-3-B, Top View, Cover Removed . 75 -vi- Fig. 40. Fig. 41. Fig. 42. Fig. 43. Fig. 44. Fig. 45. Fig. 46. Fig. 47. Fig. 48. Fig. 49. Fig. 50. Fig. 51. Fig. 52. Fig. 53. Fig. 54. Fig. 55. Fig. 56. Fig. 57. Fig. 58. Fig. 59. Fig. 60. Fig. 61. Fig. 62. Fig. 63. Fig. 64. Fig. 65. F

30、ig. 66. Fig. 67. Fig. 68. Fig. 69. Fig. 70. Fig. 71. Fig. 72. Fig. 73. Fig. 74. Fig. 75. Fig. 76. Fig. 77. LIST OF ILLUSTRATIONS (Continued) Page Transmitter Tuning Unit TU-3-B, Bottom View, Cover Removed . . . . . 75 Transmitter Tuning Unit TU -5-B, Top View, Cover Removed. . . . . . . . . . . . .

31、. . . . . . . . . . . . . . . 76 Transmitter Tuning Unit TU-5-B, Bottom View, Cover Removed . 76 Transmitter Tuning Unit TU-6-B, Top View, Cover Removed . . . . . 77 Transmitter Tuning Unit TU-6-B, Bottom View, Cover Removed . . . , . . . 77 Transmitter Tuning Unit TU-7-B, Top View, Cover Removed .

32、. . . . . . . . . 78 Transmitter Tuning Unit TU-7-B, Bottom View, Cover Removed . . . 78 Transmitter Tuning Unit TU-8-B, Top View, Cover Removed . . . . 79 Transmitter Tuning Unit TU-8-B, Bottom View, Cover Removed. . . 79 Transmitter Tuning Unit TU-9-B, Top View, Cover Removed . . . . . . 80 Transm

33、itter Tuning Unit TU-9-B, Bottom View, Cover Removed . . . , . . . . 80 Transmitter Tuning Unit TU-10-B, Top View, Cover Removed . . . . . 81 Transmitter Tuning Unit TU-10-B, Bottom View, Cover Removed . 81 Transmitter Tuning Unit TU-22-B, Top View, Cover Removed. . . . . . . . . . . . . . . . . . 8

34、2 Transmitter Tuning Unit TU-22-B, Bottom View, Cover Removed . . . . 82 Antenna Tuning Unit BC-306-A, Connection Diagram. . . . . . . . . . . . . . 83 Antenna Tuning Unit BC-306-A, Outline Dimensional Sketch . . 84 Case CS-48, Outline Dimensional Sketch . . . . . . 85 Dynamotor Unit BD-77-C, Connec

35、tion Diagram . . . . . . . . . . . 86 Dynamotor Unit BD-77-C, Outline Dimensional Sketch . . . 87 Mounting FT -115-B, Outline Dimensional Sketch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Radio Control Box BC-309, Connection Diagram . 89 Radio Control Box BC-309,

36、 Outline Dimensional Sketch . . 90 Radio Transmitter BC-191-C, Schematic Diagram . . . . 91 Radio Transmitter BC-191-C, Connection Diagram . . 93 Radio Transmitter BC-191-D or BC-191-E, Schematic Diagram. . . . . . . . . . . . 95 Radio Transmitter BC-191-D or BC-191-E, Connection Diagram . . . 97 Radio Transmitter BC-191-C, BC-191-D or BC-191-E, Outline Dimensional Sketch