Radio Set SCR-503-A
Publisher: U.S. G.P.O.
Published: 1944
Place of publication: Washington, D.C., USA
Language: eng
Description: TM 11-246A Radio Set SCR-503-A, 1944-03-30
Table of contents: title: TM 11-246A Radio Set SCR-503-A, 1944-03-30; title: Prepared under direction of the Chief Signal Officer; title: TABLE OF CONTENTS; title: Section I. Description.; title: General 1 1; title: Main components 2 3; title: Individual components 3 4; title: II. Installation and operation.; title: Precautionary measures 4 8; title: Installation 5 8; title: Normal operation 6 15; title: Operation with fixed loop 7 23; title: Emergency operation 8 23; title: III. Functioning of parts.; title: Principles of direction finding with single loop 9 28; title: Principle of double loop pperation 10 29; title: Balance circuit functioning 11 31; title: Sense circuit functioning 12 34; title: Reading the angle directly on the meter 13 35; title: Receiver circuit 14 37; title: IV. Maintenance.; title: Servicing 15 39; title: Trouble location and remedy chart 16 39; title: Localizing the trouble 17 41; title: Cleaning of contacts 18 47; title: Battery replacement and care 19 49; title: Fuse replacement 20 51; title: Dynamotor brush replacement and bearing lubrication 21 51; title: Pilot light replacement 22 52; title: Tube replacement 23 53; title: Removal and assembly of parts 24 53; title: Alignment 25 54; title: Oscillator tracking 26 59; title: Beat frequency oscillator 27 61; title: Special precautions 28 61; title: V. Supplementary data.; title: Table of replaceable parts 29 63; title: List of manufacturers 30 118; title: LIST OF ILLUSTRATIONS; title: Fig. No. Title. Page.; title: 1. Radio Set SCR-503-A, main components less Radio Receiver BC-973-A 2; title: 2. Radio Receiver BC-973-A, block diagram 6; title: 3. Radio Receiver BC-1003-A, block diagram 7; title: 4. Receiver Chest CH-103-A, packed for transportation 9; title: 5. Battery Chest CH-113-A, packed for transportation 10; title: 6. Radio Set SCR-503-A, set up for operation 11; title: 7. Compass MC-323-A, mounted on tripod 12; title: 8. Compass calibration 13; title: 9. Radio Receiver BC-973-A or BC-1003-A, orientation 16; title: 10. Azimuth scale M-333-A and flange base, showing adjustments for loops and scale 17; title: 11. Radio Receiver BC-973-A, front view, showing controls 18; title: 12. Radio Receiver BC-1003-A, front view, showing controls 19; title: 13. Control unit RM-35-A, front view 20; title: 14. Crossed pointer indication 24; title: 15. Diagram of loop patterns for emergency single channel operation using null method 26; title: 16. Basic loop response pattern 28; title: 17. Double loop response pattern 30; title: 18. Radio Receiver BC-973-A, functional diagram of balance circuit for band A 32; title: 19. Radio Receiver BC-973-A, functional diagram of sense circuit for band A 33; title: 20. Equivalent diagram of sense circuit 34; title: 21. Crossed pointer sense indications 36; title: 22. Radio Receiver BC-973-A, tube socket voltages 43; title: 23. Radio Receiver BC-973-A, tube socket resistances 44; title: 24. Radio Receiver BC-1003-A, tube socket voltages 45; title: 25. Radio Receiver BC-1003-A, tube socket resistances 46; title: 26. Loop assembly and appendage 48; title: 27. Radio Receiver BC-973-A, top view 55; title: 28. Radio Receiver BC-1003-A, top view 56; title: 29. Radio Receiver BC-973-A, bottom view 119; title: 30. Radio- Receiver BC-1003-A, bottom view. 120; title: 31. Radio Set SCR-503-A, cording diagram 121; title: 32. Control Unit RM-35-A, schematic diagram 122; title: 33. Power Supply Circuit, schematic diagram 124; title: 34. Radio Receiver BC-973-A, schematic diagram 125; title: 35. Radio Receiver BC-1003-A, schematic diagram 129; title: SAFETY NOTICE; title: Voltages present in this equipment are dangerous to human life. If they are contacted, severe shock or injury will result. Observe safety rules when working on this equipment. Always disconnect the power cord before removing the receiver chassis from its cabinet.