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TM 11-250 Radio Sets SCR-288, 1942

TM 11-250 Radio Sets SCR-288, 1942-10-28 SAFETY NOTICE The maximum voltage available in this equipment is less than 300 volts. Such voltages are not usually regarded as dangerous to human life, but may be the source of considerable discomfort or even injury to a person coming in contact with them. Care should be taken not to touch those components carrying transmitter plate potentials, especially the ungrounded side of the telegraph key, while the generator is being operated. It is to be noted that no interlocks are provided, as no high-potential parts are exposed or accessible during operation. Section I. Description. Paragraph Page General 1 2 Weights 2 4 Radio receiver and transmitter BC-474-A 3 6 Generator GN-44-A 4 6 Filter FL-10 5 6 Component parts 6 6 Section II. Employment. Initial procedure 7 8 Installation 8 8 Operation 9 9 III. Detailed functioning of parts. Overall equipment 10 14 Transmitter unit 11 14 Receiver unit 12 22 Filter FL-10 13 25 Generator GN-14-A 14 25 Characteristics of vacuum tubes 15 30 IV. Maintenance. Transmitter unit 16 30 Receiver unit 17 33 Generator GN-44-A 18 39 Typical performance characteristics 19 43 Wiring diagrams 20 44 V. Replaceable parts.

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