MDZhB, known as the Buzzer is a mysterious radio signal that can be heard daily since the 1970s. Trouble is no-one knows where it comes from and who is transmitting it.
Needless to say there are several conspiracy theories, but all attempts to track down who is behind the baffling broadcast have failed.
Those who have investigated the Buzzer think the history of its transmission stretches back to the height of the Cold War.
The daily noise is usually just a buzzing sound. It has a monotonous tone and every few seconds it’s joined by a second sound, like some ghostly ship sounding its foghorn.
Anyone in the world can hear it by tuning a radio to the frequency 4625 kHz.
The transmission appears to originate from a remote swampland near St Petersburg and a location near Moscow, but this information has not been confirmed.
It has been speculated the frequency belongs to the Russian military, though they’ve never actually admitted this. It first began broadcasting at the close of the Cold War, when communism was in decline. Most perplexing is that after the collapse of the Soviet Union, rather than shutting down, the station’s activity sharply increased.
One possibility that has been presented is that MDZhB is acting as a “Dead Hand” signal – in the event Russia is hit by a nuclear attack, the drone will stop and automatically trigger a retaliation.
According to BBC, “the system was originally pioneered in the Soviet era, where it took the form of a computer system which scanned the airwaves for signs of life or nuclear fallout. Alarmingly, many experts believe it may still be in use. As Russian president Vladimir Putin pointed out himself earlier this year, “nobody would survive” a nuclear war between Russia and the United States. Could the Buzzer be warding one off?”
Other theories are that MDZhB is connected to secret research on aliens, other secretive government projects or that that the signal has been designed to instruct a network of illicit Russian spies all over the world. There’s just one problem. The Buzzer never broadcasts any numbered messages.
Who is sending MDZhB and why?
“There’s absolutely no information in the signal,” David Stupples, an expert in signals intelligence from City University, London said.
The origin and purpose of MDZhB currently remains unexplained.