Hmm its not that difficult to "take over" the local radio reciever with a moderately powered transmitter. just build one that runs at 10.7 MHz or 21.4 MHz and the signal get straight into the IF stage of the reciever, even if they change the frequency of the tuner, it still comes through. i have done this a couple of times to suppress unwanted noise from neighbours who used to blast the radio all the time. I ran the input to my transmitter from the output of my stereo, so whatever i was listening to came out their radio. :-) and i didnt mind how loud they put it. They hardly ever thought to change over to CD input.