Can YOU solve the mystery of UVB-76? Radio station has 'buzzed' every second since the 1970s - but no one knows why A Russian radio station has played a buzzing sound on frequency 4625 kHz (shown) for four decades. Every few months it is interrupted by a voice relaying a coded message.
One of the more unlikely theories about the station is that it is a ‘Dead Man’s Switch’ system. In the case of a nuclear attack against Russia, UVB-76 would launch an automated counter-strike. Most experts, though, think it is a lesser military station. Pictured is another of the abandoned buildings explored by Mr Evseev