There's a much simpler version of a communications 'printer' called Hellschreiber https://en.wikipedia.org/wiki/Hellschreiber https://en.wikipedia.org/wiki/Hel

There's a much simpler version of a communications 'printer' called Hellschreiber https://en.wikipedia.org/wiki/Hellschreiber https://en.wikipedia.org/wiki/Hellschreiber Some old specimens still work, some new reproductions have been made, and it can also be simulated in software with various popular ham-radio programs. ...also, it's used by at least a few dozen hams every now and then :)