Spy Numbers Stations on SW

"59372 98324 19043 78903 95320...". The mechanized female voice drones on and on... What have you stumbled on to? Instructions to spies? Messages exchanged between drug dealers? Deliberate attempts at deception and mis-information? Chances are, all of the above! What you've tuned in to is called a "Spy Numbers Station". They've been on the air for several decades, and only recently have the mysteries started to unfold. But there's still much we don't know about these mysterious stations. SPYCRAFT is a new book about the history of the CIA's spy technologies. It discusses the CIA's use of Spy Numbers stations, called the One Way Voice Link (OWVL)!