N4MW Code Practice Oscillator Museum

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Mechanical Style Code Practice Oscillators
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Tape machines

Instructograph Code Instructor (AC motor - transistor oscillator) 1932 Instructograph Instructograph - 1947 ? Peerless Signagraph manufactured for RCA Institute Instructograph Model 500 (DC motor - transistor oscillator) Instructograph Code Instructor (AC motor - tube oscillator) Teleplex (crank motor, transistor oscillator (added?) Instructograph "Code Instructor", spring wound, no oscillator National Radio Institute Nacometer, spring wound, no oscillator Electronics Futures Inc. (EFI) Audio Notebook with model 90-72 "Oscillator Capsule" Peerless Signagraph manufactured for RCA Institutes Inc ATKO Mini Keyer Gardiner & Company tape keyer Perfectograph Master Teleplex Manual tape mechanism with Audible Alphabet Morse Records tape - 1918

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Military

 Signal Corps Keyer, TG-34-A

Old, New, Unusual or Unknown

    "The OMNIGRAPH" by the Omnigraph MFG Co. NRI Rec-O-Meter Learner's Receiving Set Teleplex 6 inch drum machine with AC motor Teleplex (?) drum machine with AC motor and tube CPO Teleplex Drum Machine with AC motor
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