As a teenager (1950's) I used an original Instructograph to learn Morse Code for my ham licenses, and had obtained a speed of up to about 30 wpm.

Now 70 years later, I have obtained both 3-post and 4-post Instructographs to be connected up to recoup my code and reapply for a new Extra ham license. I would be very grateful if someone could please detail for me how to connect the batteries, headset and oscillator to both of these types (3-post and 4-post) Instructographs. The machines are the post-crank type with electric motors.

  • 6
    $\begingroup$ FYI, in the USA, Morse code is no longer required for any license class, not even Amateur Extra. $\endgroup$
    – webmarc
    Commented May 13 at 0:21
  • $\begingroup$ But it's even more heavily used than when it was required! $\endgroup$
    – user10489
    Commented May 15 at 0:43
  • $\begingroup$ Looks like an interesting project. Wouldn't be easier to use one of the many internet apps for learning morse code? Take care. $\endgroup$
    – dlowrey
    Commented Jul 9 at 23:55


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