most consumer devices are going to be nothing more than frequency counters with directional or otherwise high-Q antennas. damn useful for finding that AM bug left over from the cold war, but i question the usefulness in today's world of spread spectrum and 40MHz wide digital channels. most if not all of that stuff is wider than then antenna system or IF can even tune for, which means the results will be wackadoodle and probably not recognizable as a bug.
proper detection would require dedicated hardware that can look for anything not already defined, yaknow?
