alt Hacker NewsAM is short for Amplitude Modulation, and by definition needs a carrier wave. This is more like controlled interference, still impressive though.
AM is short for Amplitude Modulation, and by definition needs a carrier wave. This is more like controlled interference, still impressive though.
But on-off keying is amplitude modulation… just with a 100% modulation index..
https://en.wikipedia.org/wiki/On–off_keying