[makomk]

24MHz - 1.8 GHz... that's going to be a $10 RTL-SDR dongle with some custom software, which doesn't really have a low enough noise floor or intermodulation to test your equipment for compliance. Though proper RF test equipment does seem to have come down in price a lot faster than ham gear.

[escherplex]

True but the projects here are experimental apps limited to 100 mw (theoretically) under FCC Part 15. If you move up to a limited (the old tech minus 5 wpm) Amateur license and start broadcasting at say 50W on 70cm or 23cm then you'll need more sophisticated analytical equipment and software (Clear Waves has a functional kit for $400). As an aside I could never figure out why 13cm became so mainstream in routers, et al, since 2.45GHz is the center frequency of a microwave oven. Looked like a plot to fry the masses /s