I hadn"t looked at the typical microwave oven leakage numbers in quite a while, and they"ve come down to about 0.2 mw/cm^2. So, if we assume a box 30 cm on each side, that gives us a roughly 30 * 30 * 6 sides = 5,400 cm^2 of surface area. Multiply by the 0.2 mw/cm^2 and we get about 1 watt, which is probably more than what"s coming off an unshielded RasPi board and unintended HDMI transmission antenna. I suppose the Foundation could always offer them up as backup broadcast transmitters to the BBC, which could probably use the help these days.
Just have people display a live BBC channel or digital video file for a movie on their RasPi and, voila, the entire neighborhood has a crisp, clear HDTV signal to pirate. Yeah, I know, it"s not in the broadcast frequency range and not modulated, but, if their antenna is pointed at the closest neighbor"s with a RasPi, maybe they could pick up the video directly without all that pesky demodulation required otherwise
~10 dB is roughly an order of magnitude. 10 dB (without the tilde/"~") is exactly an order of magnitude. Hey, I was asleep, and usually do 3 dB 2:1 conversions in my head all day and night (I"ve been doing binary math for way too long).
Well, that was fun! Another lesson we can include in the RasPi educational materials ...