Since World War I, countries around the world have been broadcasting mysterious numerical messages via shortwave radio. Though concrete evidence is hard to come by, the general consensus is that these coded messages are meant for undercover agents operating abroad. And one particular Russian station may have an even more sinister purpose. Featuring computer engineer\xa0Andrus Aaslaid, historian\xa0Maris Goldmanis, and documentary photographer\xa0Lewis Bush.\n\nFollow the show on Twitter, Facebook, & Reddit.\nSubscribe to our Youtube channel here.\nBecome a monthly contributor at 20k.org/donate.\nIf you know what this week's mystery sound is, tell us at\xa0mystery.20k.org.\nWe\u2019re hiring! Visit defactosound.com/careers for more info.\nTo dive deeper into numbers stations, visit numbers-stations.com and priyom.org, or check out Lewis\u2019 book, Shadows of the State.\nEpisode transcript, music, and credits can be found here: https://www.20k.org/episodes/thebuzzer\nVisit monday.com/podcast for your free two-week trial.\nGo to everyplate.com and enter the promo code, 20k199 to get started for just $1.99 a meal.\nLearn more about your ad choices. Visit megaphone.fm/adchoices