Radio Set 555-A
Publisher: U.S. G.P.O.
Published: 1944
Place of publication: Washington, D.C., USA
Language: eng
Description: TM 11-251 Radio Set 555-A, 1944-09-25
Table of contents: title: TABLE OF CONTENTS; title: Paragraph; title: SECTION I. Description.; title: General 1 1; title: Radio Set SCR-555-A, components with weights and dimensions 2 2; title: Frequency coverage 3 6; title: Power source 4 6; title: Power input 5 6; title: Power output 6 6; title: Description of main components 7 6; title: Description of auxiliary components   8 10; title: II. Installation and operation.; title: Selection of site 9 13; title: Initial procedure 10 15; title: Installation 11 15; title: Orientation 12 39; title: Radio Transmitter BC-655-A 13 41; title: Operation of Radio Set SCR-555-A  14 43; title: Initial adjustment of radio direction finder   15 43; title: Operation as figure-8 aural-null radio direction finder 16 45; title: Operation as switched-cardioid left-right radio direction finder 17 46; title: Operation of headsets and microphone  18 47; title: Operation precautions 20  48; title: III. Functioning of parts.; title: Principle of switched-cardioid radio direction finder 20 49; title: Antenna system 21 56; title: Adcock r-f amplifiers 22 57; title: Vertical amplifiers 23 58; title: Square wave oscillator 24 58; title: Negative pulse rectifiers 25 59; title: Synchronous voltmeter 26 60; title: R-f oscillator and mixer 27 60; title: I-f amplifier 28 61; title: C-w oscillator 29 62; title: Second detector, automatic volume control, and bearing amplifier 30 62; title: Output stage 31 63; title: Controls 32 64; title: Meters 33 66; title: Power Unit PE-155-A 34 66; title: Telephone equipment 35 67; title: Radio Transmitter BC-655-A 36 67; title: IV. Maintenance.; title: Servicing 37 69; title: Trouble and remedy chart 38 70; title: Alignment procedure 39 71; title: Replacement of coils 40 74; title: Balancing adcock antenna transformers. 41 74; title: Dynamotor unit 42 75; title: Antenna system 43 79; title: Performance data 44 80; title: Normal voltage readings 45 80; title: Parts location detail 46 80; title: Operational inspection of Radio Transmitter BC-655-A 47 80; title: Disassembly of Radio Transmitter BC-655-A 48 81; title: Routine inspection and overhaul of Radio Transmitter BC-655-A 49 82; title: Location and remedy of faults in Radio Transmitter BC-655-A 50 83; title: Typical vacuum-tube socket measurements 51 83; title: Replacing defective components of Radio Transmitter BC-655-A 52 84; title: Over-all performance test of Radio Transmitter BC-655-A 53 85; title: Moistureproofing and fungiproofing Radio Set SCR-555-A 54 85; title: V. Supplementary data.; title: Maintenance parts list for Radio Set SCR-555-A 55 93; title: LIST OF ILLUSTRATIONS; title: Fig. No. Title. Page.; title: 1 Radio Set SCR-555-A, complete assembly, in operation ix; title: 2 Radio Set SCR-555-A, close-up view, in operation x; title: 3 Radio Set SCR-355-A, crated 4; title: 4 Radio Set SCR-555-A, miscellaneous components 3; title: 5 Chest CH-128-A, components 7; title: 6 Radio Transmitter BC-655-A, with cover 11; title: 7 Correct placement of antenna for coastal installation 14; title: 8 Tower TR-25-A, outline dimensions 16; title: 9 Floor section and sills 17; title: 10 Sills assembled to floor, tower legs, and apex block 18; title: 11 Assembly of two tower legs to floor and apex block 20; title: 12 Assembly of third tower leg to floor and apex block 21; title: 13 Assembly of roof to tower 22; title: 14 Antenna AN-105-A, outline dimensions 23; title: 15 Assembly of antenna mast to crossarm 24; title: 16 Assembly of both mast sections and of antenna rods 25; title: 17 Method of using strap wrench 26; title: 18 Mounting FT-365-A, outline dimensional drawing 27; title: 19 Method of making telephone connection between mounting and floor 27; title: 20 Assembly of Mounting FT-365-A to floor 28; title: 21 Cabinet CS-155-A, outline dimensional detail 29; title: 22 Cabinet CS-155-A, mounted 30; title: 23 Writing shelf assembly 31; title: 24 Assembly of azimuth scale 32; title: 25 Ground connection 34; title: 26 Chest CH-137-A, packed 36; title: 27 Chest CH-105-A, packed 37; title: 28 Chest CH-202-A, packed 38; title: 29 Mounting of telescope 39; title: 30 Compass calibration 42; title: 31 Orientation example 42; title: 32 Radio Transmitter BC-655-A placed for operation 44; title: 33 Adcock and vertical antenna diagrams 50; title: 34 Adcock and vertical antenna field patterns 51; title: 35 Cardioid field patterns 52; title: 36 Simplified form, switched-cardioid radio direction finder  53; title: 37 Cardioid field patterns obtained by switching 54; title: 38 Electronic switching, circuit diagram 55; title: 39 Antenna AN-105-A, circuit diagram 77; title: 40 Antenna AN-105-A, crossarm details 78; title: 41 Figure-8 and vertical field patterns measured at 33 megacycles 111; title: 42 Cardioid field patterns measured at 33 megacycles 112; title: 43 Radio Receiver BC-1005-A, selectivity curve, 4.2 megacycles 113; title: 44 Radio Receiver BC-1005-A, sensitivity curves 114; title: 45 Typical radio direction finder performance data 115; title: 46 Blank chart for recording radio direction finder performance data 116; title: 47 Radio Receiver BC-1005-A, top view, tube socket layout and voltages 117; title: 48 Radio Receiver BC-1005-A, bottom view, tube socket layout and voltages 118; title: 49 Radio Receiver BC-1005-A, front view 119; title: 50 Radio Receiver BC-1005-A, top view, coil shields in place   120; title: 51 Radio Receiver BC-1005-A, top view, coil shields removed   121; title: 52 Radio Receiver BC-1005-A, bottom view 123; title: 53 Power Unit PE-155-A, top view 125; title: 54 Power Unit PE-155-A, bottom view 126; title: 55 Battery cable and power cable, wiring diagram 127; title: 56 Power Unit PE-155-A, connection diagram 128; title: 57 Power Unit PE-155-A, schematic diagram 129; title: 58 Radio Receiver BC-1005-A, connection diagram, top view   131; title: 59 Radio Receiver BC-1005-A, connection diagram, bottom view 133; title: 60 Radio Transmitter BC-655-A, front view 135; title: 61 Radio Transmitter BC-655-A, top view of chassis 136; title: 62 Radio Transmitter BC-655-A, bottom view of chassis 137; title: 63 Radio Transmitter BC-655-A, side view of chassis 138; title: 64 Radio Transmitter BC-655-A, battery compartment 138; title: 65 Radio Transmitter BC-655-A, schematic diagram 139; title: 66 Block diagram of Radio Receiver BC-1005-A 141; title: 67 Antenna system, schematic diagram 141; title: 68 Adcock r-f amplifiers, schematic diagram 141; title: 69 Vertical amplifiers, schematic diagram 141; title: 70 Square-wave oscillator, schematic diagram 143; title: 71 Negative pulse rectifiers, schematic diagram 143; title: 72 Synchronous voltmeter, schematic diagram 143; title: 73 R-f oscillator and mixer, schematic diagram 143; title: 74 I-f amplifier, schematic diagram 145; title: 75 C-w oscillator, schematic diagram 145; title: 76 Second detector, automatic volume control, and bearing amplifier, schematic diagram 145; title: 77 Output stage, schematic diagram 145; title: 78 Radio Receiver BC-1005-A, schematic diagram 145