BD-78

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BD-78 1.png


Images

  • Front view showing use of patching cords

  • Three-quarter view, showing Relay cover and cross-connecting terminal strip cover removed

  • Three-quarter view, showing side and bottom panels removed

  • Front section in open position and side, top and bottom panels removed.

Related files

Adobe_PDF_icon.png BD-78 Instruction Book[1]
Instruction Book
Switchboard
BD-78
December 15, 1935

References

  1. ↑ BD-78 Instruction Book,
    "US Army Technical Manual Collection,"
    from the CECOM Historical Office archive, Aberdeen Proving Ground, MD.
    CECOM Historical Office
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