Only in my mind.
I've so many 'projects' in the pipeline that I end up doing none of them!
Way back when HBO was broadcast in the clear, a few of us conjured up a reciever that took the HF HBO signal and mixed it with a local oscillator so that the resulting IF was then in the 2-13 channel band.
HBO managed to sniff out these LOs by driving thru neighborhoods and plopping a Cease & Desist order on the guys that were using them.
If you had the hindsight when you started you could have built your device in a tempest proof box.
You were pretty clever.