Last edited by ww2archive
August 9, 2016 | History
TM 11-615 Radio Sets SCR-609-A And -B, And SCR-610-A And -B, 1945-04-19
Previews available in: English
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Book Details
Table of Contents
CONTENTS
Paragraph Page
PART ONE. INTRODUCTION.
Section 1. Description of Radio Sets SCR-609-( ) and SCR-610-( ).
General 1 1
Application of equipment 2 1
Technical characteristics 3 1
Table of components 4 6
Frequency spectrum chart 5 7
Packaging data 6 7
Radio Receiver and Transmitter BC-659-( ) 7 7
Case CS-79-( ) 8 9
Plate Supply Unit PE-117-C and Power Supply Unit PE-120-A 9 10
Difference in models 10 11
Alignment Tool TL-150 or TL-207 11 11
Antenna AN-29-C 12
Terminal Box TM-218 and Cord CG-67/MRQ-2 13 11
Antenna Terminal Boxes TM-210 and TM-211 and Cordage CO-282 14 12
Remote Control Unit RM-29-( ) and Remote Control Equipment RC-261 15 13
Cover BG-153 16 13
Handset TS-13-( ) 17 13
Case CS-137 18 13
Wires W-29 and W-128 19 13
II. General installation information.
Unpacking, uncrating, and checking 20 14
Repacking information 21 14
III. Installation of Radio Set SCR-609-( ), ground transportable operation.
Radio Receiver and Transmitter BC-659-( ) 22 14
Case CS-79-( ) 23 15
Assembly 24 15
IV. Installation of Radio Set SCR-610-( ), ground vehicular operation.
Radio Receiver and Transmitter BC-659-( ) 25 17
Plate Supply Unit PE-117-C 26 17
Power Supply Unit PE-120-A 27 18
Mounting 28 19
Mast Base MP-48-( ) or Mast Base AB-15/GR 29 20
Coaxial antenna-matching network 30 21
Requisitioning antenna components 31 23
Installation of Terminal Box TM-218 32 24
Antenna Terminal Boxes TM-210 and TM-211 and Cordage CO-282 33 25
PART TWO. OPERATING INSTRUCTIONS.
Section V. Receiver and transmitter controls and their use.
Meter and metering switch 34 26
VOLUME-OFF switch 35 26
CHANnel switch 36 26
Speaker shutter 37 26
VI. Operation.
Selection of site 38 28
Preparation of Radio Set SCR-609-( ) 39 28
Preparation of Radio Set SCR-610-( ) 40 29
Starting procedure 41 29
Operating precautions 42 30
Tying down vehicular antenna 43 30
Emergency wire antenna 44 31
Remote control 45 32
VII. Equipment performance check list.
Purpose and use of check list 46 33
Equipment performance check list for Radio Receiver and Transmitter BC-659-( ) 47 33
Corrective measures for Radio Receiver and Transmitter BC-659-( ) 48 34
Corrective measures for dry battery operation and replacement 49 34
Corrective measures for vehicular battery operation 50 34
PART THREE. PREVENTIVE MAINTENANCE.
Section VIII. Preventive maintenance techniques.
Meaning of preventive maintenance 51 36
Description of preventive maintenance techniques 52 36
Vacuum tubes 53 37
Capacitors 54 37
Resistors 55 38
Switches 56 38
Multiple connectors 57 38
Batteries 58 39
Cords and cables 59 39
Jacks 60 39
Vehicular mast antenna 61 39
Telescopic Antenna AN-29-C 62 40
Headset, microphone, and handset 63 40
IX. Itemized preventive maintenance.
Introduction 64 40
Common materials needed 65 41
Item 1, Exterior of Radio Sets SCR-609-( ) and SCR-610-( ) . 66 41
Item 2, Antennas 67 41
Item 3, Batteries and Battery Case CS-79-( ) 68 41
Item 4, Cords and Cables 69 41
Item 5, Headset, Handset, and microphone 70 41
Item 6, Radio Sets SCR-609-( ) and SCR-610-( ) 71 41
Item 7, Radio Transmitter and Receiver BC-659-( ) 72 41
Preventive maintenance check list 73 42
Lubrication.
War Department Lubrication Order 74 42
XI. Moistureproofing and fungiproofing.
Problems encountered 75 Treatment 76 42
Step-by-step instructions for treating Radio Sets SCR-609-( ) and SCR-610-( ) 77 42
Step-by-step instructions for treating Power Supply Unit PE-120-A 78 46
PART FOUR. AUXILIARY EQUIPMENT (not used).
PART FIVE. REPAIR INSTRUCTIONS.
Section XII. Theory of Radio Receiver and Transmitter BC-659-( ), receiver section.
General 79 48
First radio-frequency amplifier stage T 80 49
Second radio-frequency amplifier stage 81 50
Mixer 82 50
Crystal oscillator 83 50
First intermediate-frequency amplifier stage 84 51
Second intermediate-frequency amplifier stage 85 51
Limiter 86 51
Discriminator and direct-current amplifier 87 52
Audio-frequency power amplifier 88 54
XIII. Theory of Radio Receiver and Transmitter BC-659-( ), transmitter section.
General 89
Reactance tube modulator and microphone circuit 90 54
Oscillator 91 55
Buffer-doubler 92 56
Radio-frequency power amplifier 93 56
Antenna network 94 57
Stabilization of transmitter resting frequency 95 58
Transmitter filament and microphone circuit 96 59
Meter control switch SW13 97 60
Metering socket S02 93 60
XIV. Theory of power supply units.
General 99 62
Plate Supply Unit PE-117-C, circuit analysis 100 62
Power Supply Unit PE-120-A, circuit analysis 101 63
Case CS-79-( ) 102 64
XV. Trouble shooting.
General trouble-shooting information 103 65
Resistance measurements 104 67
Capacitor tests 105 68
Tube checking 106 68
Test equipment 107 68
Installing Adapter M-399 108 68
Trouble-shooting procedures 109 69
Sectionalizing trouble in Radio Set SCR-609-( ) 110 70
Sectionalizing trouble in Radio Set SCR-610-( ) 111 70
Sectionalizing trouble in Radio Receiver and Transmitter BC-659-( ), receiver section 112 70
Sectionalizing trouble in Radio Receiver and Transmitter BC-659-( ), transmitter section 113 71
Localizing trouble in Plate Supply Unit PE-117-C 114 71
Localizing trouble in Power Supply Unit PE-120-A 115 72
Localizing trouble in Case CS-79-( ) 116 72
XVI. Repairs.
Replacement of parts 117 73
Radio Receiver and Transmitter BC-659-( ), normal point-to-point resistancey values 118 74
Plate Supply Unit PE-117-C, normal point-to-point resistance values 119 81
Power Supply Unit PE-120-A, normal point-to-point resistance values 120 85
Continuity checks for Case CS-79-( ), cords, and cable assemblies 121 86
Rustproofing and repainting 122 86
Unsatisfactory Equipment Report 123 89
XVII. Alignment and neutralization.
Test instruments for alignment and neutralization 124 89
Alignment of receiver section 125 89
Neutralization 126 90
Minimum test requirements 127 91
XVIII. Presetting.
Preliminary considerations 128 91
Instructions for presetting 129 92
Test instruments for presetting 130 93
Presetting procedure using Voltohmmeter 1-107-( ) or other electronic voltmeter 131 93
Presetting procedure using alignment indicator or Adapter M-399 132 94
Emergency presetting of transmitter 133 95
APPENDIX I. MAINTENANCE PARTS FOR RADIO SETS SCR-409-A AND -B AND SCR-B10-A AND -B. 96
II. REFERENCES 97
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