U-Boats, Spies, and White Magic: The Invention of Wireless Cryptography
The wireless telegraph station in Sayville, New York was one of the most powerful in the world. Constructed by the German company Telefunken in 1912, it served as a transatlantic relay point for diplomatic messages and business communications. It was a beacon among amateur wireless enthusiasts around the United States who could tune their home-made…
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Grant Wythoff - The Appendix