Training Manuals

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1920s TM s Basic Signal Communication: Training Manual.

  • TM-20
  • TM-21
  • TM-22
  • TM-23
  • TM-24
  • TM-25
  • TM-26 Radio Operator, students, 1924, File:TM-26.pdf
  • TM-27 Radio Operator, instructors, 1925, File:TM-27 1925.pdf
  • TM-28
  • TM-29
  • TM-30