“Shortwave radio aficionados developed various hypotheses about the role of the station in Russia’s sprawling, military-communications network. It was a forgotten node, one theory ran, set up to serve some function now lost deep in the bureaucracy. It was a top-secret signal, others believed, that transmitted messages to Russian spies in foreign countries. More ominously, countered another theory, UVB-76 served as nothing less than the epicenter of the former Soviet Union’s ‘Dead Hand’ doomsday device, which had been programmed to launch a wave of nuclear missiles at the US in the event the Kremlin was flattened by a sneak attack. (The least sexy theory, which posited that the Buzzer was testing the thickness of the ionosphere, has never enjoyed much support.)”
“Inside the Russian Short Wave Radio Enigma.” — Peter Savodnik, Wired magazine