RYRYRYRYRY
Ben
It is perfectly possible to connect a mechanical TELEX machine to a radio
You need a modem to convert those audio signals from your radio into suitable signalling to the telex machine mechanics and vice versa
Since the advent of personal computers the "machine" part has gone "software" but a few diehards in amateur radio still do it with TTY machines
Over the air is is called "RTTY" (radio teletype) and is based around Baudot not ASCII coding
BARTG (bartg.org.uk) is the amateur group focussed on this subject and have a helpful document here, although it focuses more on using a PC
https://drive.google.com/file/d/1J_j...dIgB7Xdms/view
BARTG was years ago the source of the modem hardware design/kits to interface a mechanical terminal with a design called the "ST5" AFAIR
http://www.baudot.net/creed/docs-ala...e-easy-way.pdf seems more relevant to what you want to do
(The fire mobilising data system I was involved with (35 years ago) used a radio link bearer to pass signals that the fire station did print on a mechanical teleprinter like printer!)
Good luck with your project
Fred
G4BWP