JAKARTA - For four decades, since the peak of the Cold War, a mysterious radio signal has been emitted from Russia, which has confused amateur radio enthusiasts, scientists, and spies. Some have speculated that this signal is part of the secret SETI program of the Russian government or is even communicating with visiting alien species.

However, according to Professor David Stupples, who teaches electronics and radio engineering at the City University of London and has learned the signal, one thing is certain: "It is almost certain that the Russian government is using this signal," he said. "If it was the Russian government, it would not be for peaceful purposes."

The signal, dubbed "The Buzzer", is broadcast at the radio frequency of the short-wave 4625kHz. Professor Stupples believes that the signal is most likely maintained as a reserve step in the nuclear war case. While some physicists speculate that this signal is used to monitor the Earth's ionosphere.

However, wilder speculation also emerged. Some believe that this signal is the trigger for the end of the 'Dead Hand' which would launch nuclear weapons if Russia's leadership was paralyzed. This signal first attracted attention in 1982 and became even more strange in 1992, with strange sounds and unexplained codes.

In 2010, a source of signals moved from a military base near Povarovo, about 19 miles outside Moscow, to a new location believed to be near Pskov, on the border with Estonia. This change was accompanied by changes in broadcast patterns, including random voices and mysterious repeatable codes.

Amateur radio researchers and scientists, despite trying various methods to unravel the meaning of this signal, have yet to find a definite answer. According to Professor Stupples, without official confirmation from the Russian Federation, the truth behind this signal may remain a mystery.

Even so, this mystery continues to captivate and invite various speculations from various parties, from conspiracy theories to allegations of more pragmatic military use. "This is always interesting, isn't it?" Stupples told Popular Mechanics. "And you never know, one of those strange views may be true, and we all have to accept the harsh reality."


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