Numbers stations are mysterious shortwave radio stations, broadcasting streams of numbers or letters using the phonetic alphabet, by voice, Morse or digital tones. The messages are usually groups of four or five numbers or letters and are typically repeated by reading each group twice or repeating the entire message. These stations are unlicensed high power HF transmitters, broadcasting worldwide in various formats and languages.
 
They do this day and night on a wide range of frequencies and it's been going on for decades, yet no single private, commercial or government agency ever stepped forward to officially confirm that they are responsible for these strange broadcasts. However, today there is enough evidence that these stations are used by Intelligence agencies to send encrypted messages and operational instructions to their agents in covert operations abroad.
 
The Cold War era, from the 1950s until the end of the 1980s, is known for its numerous and very active numbers stations, not by coincidence the heydays of espionage. Many of the broadcasts came from the Eastern-block countries, China and Cuba, but also from several Western countries.
EXAMPLE CODE # NUMBER 2
14 | 72 | 57 | 29 | 65 | 50 | 75 | 90 | 29 | 29
 B   E    R    L    I    N   W    A    L    L
                      
 NUMBER 0 - DEAD HAND
 NUMBER 1 - SPACE RACE
NUMBER 2 - BERLIN WALL
NUMBER 3 - ATOMIC TEST
NUMBER 4 - PROPAGANDA
NUMBER 5 - ESPIONAGE
NUMBER 6 - CAPITALISM
NUMBER 7 - COMMUNISM
NUMBER 8 - CUBA CRiSIS
NUMBER 9 - MODERN THREAT
Secret Signals
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Secret Signals

My graduation project HKU (Utrecht School of Arts) 2015.

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