UVB-76: The Signal Waiting for the World to End

Midnight Signals: History, Folklore and Unexplained Mysteries · Jun 1, 2026 · 20m · transcript

For more than four decades, a shortwave frequency known as UVB-76, or the Buzzer, has broadcast a flat, mechanical tone from Russia, outlasting the Soviet Union, wars, and decades of political change. Underneath the daily hum, listeners have picked up footsteps, breathing, and a ringing telephone, sounds that suggest a staffed room somewhere and a transmission someone cannot let stop.

The darkest theory ties the signal to Perimeter, the Soviet automated retaliation system known in the West as Dead Hand: if the tone ever stops without an override, the story goes, the system could launch. The…