The Conet Project: Recordings of Shortwave Numbers Stations is a four (later five)
CD set of recordings of
numbers stations and noise stations:
shortwave (
HF) radio stations of unknown origin believed to be operated by government agencies to communicate with deployed
spies. The collection is released by
Britain's Irdial-Discs record label in 1997, based on the work of numbers station enthusiast Akin Fernandez. -- Wikipedia.