Until an angry Radio Inspector arrives on your doorstep having spent all day driving around your town with a spectrum analyzer to track you down.
When you get to attend court, the judge will award the standard fines (and possible jail time) but also the cost of the time spent by the Radio Inspector in traveling to your town.
Only a fool would run something like this constantly, or even at all outside of a few minutes to prove it worked. If you're being sensible you aren't going to have issues.
Mentioning that even this proof of concept is illegal is useful, as it isn't mentioned in the article. This is so easy to make that practically anyone could do it, which makes this very relevant.
