Hacker News Reader

Which means the output will be lousy with harmonics and intermodulation. Even a tight band-pass filter won't clean up the mess.

It will be anyway. To create clean RF isn't all that simple.

It isn't simple if you use the wrong tools for the job. It can be simple if you don't generate square waves.

There are 100's of similar simple circuits that generate RF that is clean enough.

Right up until you hook up that spectrum analyzer...

Have a read of any of the Amateur Radio books and magazines over the past hundred years or so.

There are no shortage of simple Analog transmitters which meet FCC specs.