The Buzzer (ZhUOZ MDZhB UZB76)
The Buzzer, call-sign ЖУОЗ (ZhUOZ), nicknamed Жужжалка, formerly known by its previous callsigns МДЖБ (MDZhB) and УЗБ76 (UZB76), is a Russian-based military station that frequently broadcasts Monolit format messages in Russian. Its official name is actually вулкан (Vulkan, Volcano in English). Its trademark buzzer is constantly transmitted while there is no message to broadcast. Active since the late 1970s.
ZhUOZ is an analogue Upper Side Band voice signal. It has an active carrier at 4625 kHzKiloHertz (kHz) 10^3 Hz. It is believed that the buzzer is not directly modulated but actually recorded by a active microphone, as there have been reports of hearing background chatter while the buzzer was on.
On September 7, 2010, The Buzzer changed its callsign from УЗБ76 (UZB76) to МДЖБ (MDZhB)
Since October 15, 2015, The Buzzer has been seen transmitting in parallel on a new frequency 6998 kHzKiloHertz (kHz) 10^3 Hz, while still transmitting on 4625 kHzKiloHertz (kHz) 10^3 Hz.
Since December 28, 2015, The Buzzer has changed its call-sign to ЖУОЗ (ZhUOZ).
At least two transmitters exist for MDZhB. One is confirmed to be at 60°18’40.1″N 30°16’40.5″E where it sends radio relay and phone lines directly from Moscow via St. Petersburg's command hub on Palace Square.
The other site is claimed to be located at Naro-Fominsk, Moscow district at 55°25’35″N 36°42’33″E where the 69th communications center is located, which serves as the main staff headquarters of the Western Military district in Moscow.
Example of Voice Messages on ZhUOZ:
- UVB-76 Transmitter Site Outside of St. Petersburg, Russia
- Radio Station UVB-76 (The Buzzer)
- UVB-76 The Buzzer Voice message 23/August/2010
- UVB-76 for two hours (2013)
- MDZhB Message, UVB-76 The Buzzer, 4.625
- UVB76 The buzzer 4625 and now also 6998 Khz Shortwave spy broadcast
- Good Mythical MORE: The Mystery of UVB-76
- RT News: Cold War Echo: Unraveling mysterious radiowave UVB-76
- Daily Dot: Has Russian radio signal UVB-76 been solved after 40 years?
- BBC Future: The ghostly radio station that no one claims to run
- Wikipedia UVB-76
- UVB76 Logbook
- Numbers-Stations.com The Buzzer
- Priyom.org The Buzzer
- UVB-76.net Live Stream Repeater
- The Ghost In My Machine: MDZhB