A Cold War-Era Russian Radio Transmitter Just Broadcast a New Encrypted Message, No One’s Been Able to Decipher

A mysterious shortwave radio signal that has puzzled intelligence agencies and amateur radio enthusiasts for decades has once again broadcast a new coded message—one that experts and hobbyists alike are struggling to decipher. The broadcast came from UVB-76, also known as “The Buzzer”, a Soviet-era radio station that has never publicly explained its purpose, yet continues to transmit from deep within Russia.

The message, heard on 8 September 2025, featured a bizarre combination of Russian names, random numbers, and cryptic phrases—sparking fresh speculation about whether this station is still part of Russia’s military infrastructure, or something far more enigmatic.

Operating continuously since at least the mid-1970s, UVB-76 transmits on the 4625 kHz shortwave frequency, emitting a persistent buzzing sound interspersed with occasional voice messages. These spoken broadcasts often include lists of names, numerals, or coded phrases, delivered in a flat, mechanical tone by both male and female voices.

According to Priyom.org, a respected monitoring group of radio observers, UVB-76 is believed to be part of a military communications network linked to Russia’s Western Military District. Its messages have been categorized into three general types—Monolith, Uzor, and Command—each believed to correspond to different levels or types of military operations.

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