Have you ever actually used an SDR? Like an RTL-SDR or similar? Go buy one for $20, plug in it and tell me how much spectrum you actually see being used acros

Have you ever actually used an SDR? Like an RTL-SDR or similar? Go buy one for $20, plug in it and tell me how much spectrum you actually see being used across the board. Below the frequencies used for high speed communications (>800MHz, LTE, WiFi2/5 etc) you'll find a whole lot of dark blue waterfall, even with an appropriate antenna.