N4MW Code Practice Oscillator Museum

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Mechanical Style Code Practice Oscillators
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Instructograph Tape Machines View Instructograph Advertisement

1932 Instructograph Instructograph Code Instructor (AC motor - transistor oscillator) Instructograph - 1947 ? Instructograph Model 500 (DC motor - transistor oscillator) Instructograph Code Instructor (AC motor - tube oscillator) Instructograph "Code Instructor", spring wound, no oscillator

Similar to Instructograph Tape Machines

Teleplex (crank motor, transistor oscillator (added?) Peerless Signagraph manufactured for RCA Institute National Radio Institute Nacometer, spring wound, no oscillator Peerless Signagraph manufactured for RCA Institutes Inc Perfectograph

Other Tape Machines

 Electronics Futures Inc. (EFI) Audio Notebook with model 90-72 "Oscillator Capsule" ATKO Mini Keyer Gardiner & Company tape keyer Master Teleplex Manual tape mechanism with Audible Alphabet Morse Records tape - 1918 Teleplex motorized tape machine w/oscillator Gardiner & Company tape keyer, Deco wood box

Military

 Signal Corps Keyer, TG-34-A

Disk or Drum Machines

"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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