Hacker News new | ask | show | jobs
by ajsnigrutin 822 days ago
There's a much simpler version of a communications 'printer' called 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 :)