Number stations are cool

"Short wave radio enthusiasts worldwide have heard of the strange and elusive Numbers Channels. It is a name that refers to any one of several of unusual broadcasts that usually start at a very specific time, though often from different locations. The broadcasts contain some odd elements like excerpts of music, a regular attention message, and a sting of phonetic letters or numbers—for which they are named. For the most part, the signals make no sense—at least not to most people—the messages are fairly random, and there is not enough information in the broadcast itself to allow one to decipher it."