OWVL and IOWL Covert Communications (COVCOM) | Tradecraft Sunday |

After WWII and throughout the Cold War, one-way radio communications became a common espionage tradecraft. Two of the most commonly used methods were the One-Way Voice Link (OWVL) and the Interim One-Way Link (IOWL). The foundational principles of those later adapted to the digital world.

00:00 - Introduction
00:58 - Weakness of spies using radios
01:33 - One-Way Voice Link (OWVL)
02:25 - Receivers
04:03 - Interim One-Way Link (IOWL)
05:02 - One-Time Pad (OTP)
06:41 - Number Stations
07:28 - Conclusion

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