UVB-76 signal interrupted as Morse code and faint music are heard on its frequency

November 13, 2026 — The shortwave radio station UVB-76, known as “The Buzzer,” experienced a signal disruption on Friday, according to the publicly accessible Telegram channel UVB-76 Logs, which monitors activity on the station’s frequency.

The channel reported a drop and fluctuations in the signal associated with UVB-76. The station’s characteristic buzzing then stopped. A Morse code signal and faint music were also heard on the frequency. The usual buzzing was later heard again.

The Morse code and music may have come from an unauthorized operator transmitting on the same frequency. Their source has not been independently confirmed.

The cause of the interruption also remains unknown. Changes in the strength of a received shortwave signal can have several explanations, including interference and propagation conditions. They do not, on their own, establish that the transmitter’s output power changed.

What is UVB-76?

UVB-76 is a Russian shortwave station known for a repetitive buzzing sound transmitted on 4625 kHz. The sound is occasionally interrupted by voice messages containing call signs, numbers and code words.

The frequency is followed by radio enthusiasts around the world. It also attracts unauthorized transmissions, meaning that sounds heard on the frequency do not necessarily originate from UVB-76 itself.

Source: UVB-76 Logs on Telegram.