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TM 11-330 Switchboards BD-71, BD-72, BD-72-A, And BD-72-B, 1943

TM 11-330 Switchboards BD-71, BD-72, BD-72-A, And BD-72-B, 1943-10-29 TABLE OF CONTENTS ParaGraph Page SECTION I. Description: Use 1 1 Characteristics 2 1 Components 3 1 Weight and dimensions 4 5 II. Installation and operation. To set up switchboard. 5 5 Preliminary tests 6 7 Line connections 7 7 To install switchboards in parallel. 8 10 Trunking between switchboards. 9 10 Operation 10 11 Special installation 11 13 III. Functioning of parts. Description of circuite lements 12 14 Circuit description. 13 15 IV. Maintenance. Care 14 20 Repair and replacement 15 20 V. Supplementary data. Characteristics of circuit elements. 16 22 List of parts. 17 23

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