Something neat for the spook enthusiasts out there: Numbers Stations These are radio stations, located throughout the world, that broadcast a constant buzz, a blank tone or old music AND THEN, out of nowhere, just broadcast random numbers, letters and words. Possibly, these are codes for spies. No one is really sure. There are some cases where the US has used recordings of numbers stations to bust foreign spies, but the US itself has never attested to having or using any numbers stations. One relatively well-known station is UVB-76, a tower in Russia that emits a constant buzz, EXCEPT for the only three transmissions it has ever made in its almost 20 years of operation. Kinda neat, kinda spooky.