Plus, there's the entire art of the scanning hobby of discovery and experimentation that is often lost with these $900 appliances scanners. People forget The Database (pause for moment of reverence) was built and maintained on the backs of hobbyists putting in the elbow grease and hours of searching and listening and jotting notes down and validating findings. Fire tone outs need that same elbow grease, (not to undersell SDR's and technical tooling that can greatly enhance this exact type of search.) That same elbow grease and effort needed is what keeps the riff-raff from creating spurious emissions that drive the airwaves further and further into big E.