The Ghostly Radio Station That No One Claims To Run (bbc.com)
Zaria Gorvett, writing for BBC: In the middle of a Russian swampland, not far from the city of St Petersburg, is a rectangular iron gate. Beyond its rusted bars is a collection of radio towers, abandoned buildings and power lines bordered by a dry-stone wall. This sinister location is the focus of a mystery which stretches back to the height of the Cold War. It is thought to be the headquarters of a radio station, "MDZhB", that no-one has ever claimed to run. Twenty-four hours a day, seven days a week, for the last three-and-a-half decades, it's been broadcasting a dull, monotonous tone. Every few seconds it's joined by a second sound, like some ghostly ship sounding its foghorn. Then the drone continues. Once or twice a week, a man or woman will read out some words in Russian, such as "dinghy" or "farming specialist". And that's it. Anyone, anywhere in the world can listen in, simply by tuning a radio to the frequency 4625 kHz. It's so enigmatic, it's as if it was designed with conspiracy theorists in mind. Today the station has an online following numbering in the tens of thousands, who know it affectionately as "the Buzzer." It joins two similar mystery stations, "the Pip" and the "Squeaky Wheel." As their fans readily admit themselves, they have absolutely no idea what they are listening to.
As I understand, it's almost certainly used to send coded messages to Russian agents in case of emergency. The Russians are probably broadcasting a constant tone to reserve the frequency, so other people don't start using it. They say as much in the article.
In case you're wondering, this article is about the very famous UVB-76 station.
https://en.wikipedia.org/wiki/...
If you are interested: https://www.youtube.com/watch?v=nCC8Xb7K0c8
The most obvious explanation is it is part of a military strategy to facilitate an insurgency should Russia be invaded.
Basilcy the station broadcasts nonsense on regular intervals so that at any time in the future it can be used by remnants of the Russian military to broadcast coded information without giving away the fact that they started communicating. It also broadcasts a solid tone and heartbeat so they can reduce the likelihood of somone else using the channel and so they can tell if the station is destroyed or deactivated without waiting for the next broadcast. It is also possible but IMO less likely that it is in active use for espionage.
It probably isn't a nuclear deadman switch as those would have been shut down as part of post soviet disarmament. It might have been a decoy deadman switch that no one has the guts to turn off because they can't find the documentation saying where the missiles it controls are and are (because they don't exist) but no one is entirely certain the documents weren't just lost.
It also probably isn't just a random troll as it's continued operation implies that someone with some kind of pull set it up not just a random citizen (they had to make arrangements with the power company at the very least, and likely ongoing matinance given it's age)