My first RTTY demodulator was a twin cities tube affair.
Home brewed a number of AFSK modulators and demodulators.
My Fleisher TU-170 was an absolute jewel (sorry I ever sold it).
Still have a Robot keyboard. (CW, Badot & ASCI)
Not that active any more, but thinking about fixing that. Still have some fine gear.
I did a bit of homebrew QRP work. Really liked that.
Man you ARE a fossil ;-). But the cool thing is, radio is still magic and the oldest modes still work just as well as ever for those who prefer to use them.