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The short waves They were for decades one of the strangest territories on the radio planet: anyone with a cheap radio could hear metallic voices reciting meaningless numbers, repetitive melodies or absurd phrases that seemed straight out of a spy movie. During the Cold War, thousands of radio amateurs recorded these emissions mysterious things spread all over the world, many of them active for years without anyone officially knowing who was behind them. Some disappeared after the fall of the Soviet bloc. Others, surprisingly, they never left altogether. A voice in the middle of the war. I told the story this morning the financial times and begins shortly after the United States and Israel They will start their attacks against Iran on February 28. Then a sound began to be heard strange transmission on short wave directed at the country: a male voice in Persian that bursts through the static repeating “Tavajjoh” (attention) three times before reciting long sequences of numbers with an almost mechanical cadence. The emissions, detected by radio amateurs and signal trackers, apparently come from somewhere in Western Europe and are repeated twice a day for about an hour and a half. Although its exact origin has not been confirmed, former US intelligence officials consider it very likely that it is a emergency communication system to maintain contact with agents inside Iran at an especially sensitive time, when the war has raised the risks for any informant and the Iranian government has restricted access to the internet and other international communications. What the V32 station really is. The mysterious emission has been identified by observers like V32a call “number station”a type of shortwave transmission historically used by intelligence agencies to send encrypted orders to spies on the ground. The system works in an extremely simple way: the agent only needs a radio and a code book (the so-called one-time pads) to convert the figures heard into understandable messages. The station began broadcasting in Persian exactly coinciding with the start of the war and has already tried to be interfered with through electronic noises which probably come from Iranian jamming systems, but the mysterious voice has been limited to change frequency and continue with his reading of numbers. These types of broadcasts are almost impossible to completely neutralize, because anyone can tune in and because counterintelligence can only act if it detects a spy transcribing the message or if the operators make mistakes. The shadow of the Cold War. The pattern that this station follows is directly reminiscent of one of the most disturbing elements of 20th century espionage: the digital radios that proliferated during the cold war. For decades, services like the CIAthe KGB or the Stasi emitted metallic voices that recited numbers, letters or even melodies followed by coded sequences aimed at agents infiltrating enemy territory. These transmissions could heard around the world and yet its meaning was indecipherable to anyone who did not possess the proper key. Some stations became famous among radio amateurs for its peculiarities (childish voices, strange music or seemingly absurd phrases), but its logic was always the same: to offer an untraceable and extremely secure communication system. The method survived for decades because it was cheap, discreet and resistant even the most sophisticated espionage systems, and although the phenomenon decreased after the end of the Cold War never disappeared full. The Cold War Morse/Voice Generator is a machine that has been used in many well-known number stations Old, but it works. The reason why these stations continue to be useful in the 21st century is precisely their simplicity. If the internet goes down, if phones are tapped, or if digital communications are blocked, a simple shortwave radio still works and allows orders to be transmitted without leaving an electronic trace. For the secret services, it also offers additional benefits: The recipient can listen to the message in seconds, destroy their codebook immediately afterwards, and disappear without leaving any evidence. That simplicity makes even a single person well located can receive instructions capable of causing enormous consequences, from sabotage to more complex intelligence operations. By the way, messages are usually repeated several times to minimize the risk that the agent in question will have to expose himself for too long listening to the transmission. What could the mysterious voice be saying. Although they are all hypotheses and no one outside of their operators knows the real meaning of the sequences, former intelligence officials they point to several plausible possibilities. Emissions could serve to activate agents who remained waiting inside Iran, order evacuations to meeting points or even coordinate operations covered up during the conflict. There is also another more strategic interpretation: that the station is deliberately designed to sow doubts within Iranian counterintelligence, suggesting that there are high-level infiltrators awaiting instructions from the West. In that case, even without transmitting specific orders, the very existence of the station would force Tehran to mobilize cryptographers, researchers and resources to try to decipher a message that may never be understood. Weird, but still alive. Number stations are one of the few times when the normally invisible work of intelligence services becomes audible for anyone with a radio. Although they are much less common today than during the confrontation between blocs of the 20th century, they still there are transmissions regulars associated with countries such as Russia, Poland, Taiwan or North Korea. Some even preserve an almost ceremonial style, such as the Taiwanese station known as New Star Broadcastingwhich begins with a flute melody and ends by wishing “health and happiness” to its listeners before issuing coded numbers intended for agents on extremely sensitive missions. Iran and the difficulty. For the United States, maintaining intelligence networks inside Iran has always been especially complicatedpartly because it does not have an embassy in the country and because the Iranian security apparatus is one of the most vigilant in the world. That forces Western services to retain emergency communication methods capable of working when all else fails. … Read more