Episode notes
For decades, a strange signal has occupied the shortwave frequency 4625 kHz.
Most of the time, it is nothing more than a repetitive buzzing sound.
Then, without warning, the signal stops.
A human voice appears.
Numbers.
Names.
Call signs.
Fragments that sound like coded instructions.
And then the buzzing returns.
Known to radio enthusiasts as The Buzzer or UVB-76, the mysterious station has been monitored since the late Soviet era and is widely believed to be connected in some way to Russian military communications.
But its exact purpose remains unclear.
In this episode of Final Signal, we explore the history of 4625 kHz, the strange voice transmissions, suspected transmitter locations, the abandoned Povarovo site and the theories that have grown around the signal — including the famous claim that it may be connected to a nuclear “doomsday” system.
What is documented?
What is speculation?
And who are these messages actually meant for?
Because sometimes the most unsettling signal is not the one we cannot hear…
but the one we can hear perfectly and still cannot understand.