UVB-76
Forgotten Mysteries · 2011
Published
UVB-76 is the listener nickname attached to a shortwave signal heard on 4625 kHz. Most of the time it transmits a repetitive buzzing tone, but monitors have occasionally logged spoken Russian messages, callsigns and groups of words or numbers. In 2011, reported voice traffic included identifiers such as KZJT, LNR4 and MDZhB.
Why It Mattered
The Buzzer is compelling because it is easy to hear but difficult to explain. Listeners can record its frequency and messages, yet the operator and purpose have never been publicly confirmed; military theories remain interpretations rather than an acknowledged answer.
Frequency and label
- Both retained logs place the monitored signal at 4625.0 kHz.
- The magazine identifies it with the listener labels 'The Buzzer,' S28 and UVB76.
Logged voice traffic
- The May 2011 log records an AM voice message at 1448 UTC with callsigns KZJT and LNR4.
- The June 2011 log records several Russian voice messages from 'MDZhB' to named recipients at three UTC times.
Evidence boundary
- The June observation was made through a remote receiver and attributed to monitor Ary Boender.
- The operator and purpose have never been officially acknowledged.
Associated With
Unknown - associated person or organisation not established
Defining Feature
A signal monitored on 4625.0 kHz with a marker sound and intermittent Russian voice traffic
Status
Unresolved - Documented in the retained 2011 monitoring logs; origin, operator, purpose and present status are not established
Primary Records
Image Sources
- All one image sources are not yet verified — editorial review required.
Rights Notice
Images are included for historical and archival reference.
Rights holders may contact Forgotten Archive through the publishing account to request a credit correction or removal.
Gallery
Credit
NBNBNB00000 / Wikimedia Commons; resized for display
Caption
A receiver display recorded on 7 January 2024 shows UVB-76 at 4625 kHz, making the station's persistent signal visible as a pattern in the radio spectrum.