Damn, too bad I got in on this thread so late. I know a bit about these number stations... been interested in them for years. Not so long ago they found the origins of a couple of them. The
"Lincolnshire Poacher" station was located in a RAF facility, and another
CIA site is at the Warrenton Training Center. What are these stations transmitting? No one really knows. Most likely they're secret messages encoded with
one time pads sent out to government spies. In fact, at one time an asian number station ended its transmission with a woman saying "thank you for decoding today's message!" Almost certainly some of this traffic, if not most, is misinformation. With today's technology it would be trivial to shoot a highly encrypted digital message down from a satellite and have it recieved, yet the number stations keep broadcasting. Perhaps this is because no sophisticated equipment is required to receive these these transmissions. Just a plain old shortwave radio, a frequency to listen to, and a time to have the radio on.