[GreenKeys] Documentation for INFOTECH M-150 RTTY Keyboard

[Paul Birkel]

I'm now the new home for an INFOTECH M-150 RTTY Keyboard formerly taken
loving care of by Jack (K2TTY).

 

Does anyone have any documentation (manual, circuit diagram) for this item?
Inside it's all simple-logic TTL ICs plus an AY-5-1013A UART.

 

Neither Jack nor I have been able to uncover any documentation.  Maybe many
hands/eyes will make short work :->?

 

Thanks,

 

paul

 

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