Back in the early 80's, in the Dallas/Fort Worth area, there was a TV station that showed porn over the air after midnight.

The signal was scrambled and you had to have one of their dishes to pick it up. You could get the signal with a normal antenna but it was wavy and without sound.

This was also the dawn of the fax machine and it was not long before plans to build your own descrambler and dish were clogging fax machines in offices everywhere.

The descrambler was a bit beyond my ability to understand, but the 'dish' was made from the lid of a metal garbage can and a klystron tube that was built with parts from Radio Shack. I knew two people that built them and they worked!

The station went bust because the only people who were watching it were those that were stealing the signal. No one wanted to mount a real antenna on there house because then everyone would know they were watching porn. The folks that built the garbage can dishes wanted everyone to know they were just Nerd enough to make it work and weird enough to enjoy porn.