Huh?? I operated 50+ years ago. This sounds like a RTTY operation highly souped up with computer detection and transmission. Hams used keyboards and hf 60 plus years ago. Am I close?
Miss my 20 and 40 cw dx and 160 am. A vertical and 50 watts. Really cooked when I moved up to ssb.
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.
It’s been around for a few years now. Digital mode, software defined radios or SDR’s etc..Most hams nowadays are tied into the Internet one way or another and digital is yet another amateur radio mode.
It’s been around for a few years now. Digital mode, software defined radios or SDR’s etc..Most hams nowadays are tied into the Internet one way or another and digital is yet another amateur radio mode.
The mathematical codes this new software uses for detection weren’t even invented 50 years ago. But yes, like RTTY, it uses FSK, but with 8 levels (FT8) or 65 levels (JT65) per symbol instead of just 2.