Here's a few FM wireless pranks involving drive in theaters. From alt.shenanigans
---I know there are few of these in existence, but we have a local drive-in theater. They have replaced the old speaker boxes with a short range FM station so you can listen from your car's stereo. I had bought a wireless CD adapter that also transmits a FM signal from your CD player to your FM stereo. I attached a microphone to the adapter jack and could talk over the theater's sound system (although I was courteous enough not to interrupt the movie, just the previews and candy commercials). I said stuff like "Will John please report to the refreshment stand? You have a important phone call." and "Will everybody please stand for the National Anthem."
---Or, you could say, (If an enemy was there!) Say, " <enemy's name> , please come to the front for the ExLax your Mother just delivered." That'd get some
laughs.........
---You could also use this to broadcast the sounds of what people traditionally
do at a drive-in ...
---create a tape of a `love-in/orgy at the park' one about ten minutes long. should drive the manager nuts, especially at a multi-screen drive-in movie
/End alt.shenanigans
What if you went to a baseball game that's being announced over a local radio station and transmit a play by play from a football game.
If a local radio station, let's say a pop top 40 type, is broadcasting live from some place. Interrupt their broadcast a transmit a hip hop station instead.
Go into Best Buy or Circuit City and broadcast whatever you want with their demo stereos. Kinda like the walkie talkie pranks from your website.
I'm sure someone can come up with better FM transmitter pranks.
MIB