criminalwisdom:

“UVB-76 is a mysterious radio broadcast, consisting of nothing but an unpleasant buzzing noise, which has been going almost non-stop since 1982, and comes from somewhere in Russia. Three times during its nearly thirty year history, the buzzing has stopped, somebody has read a list of Russian names, and then the buzzing started up again. Nobody knows exactly why, although it’s probably to do with spies or something.”
~ Agent 3Z

• At 21:58 GMT on December 24, 1997, the buzzing abruptly stopped to be replaced by a short series of beeps, and a male voice speaking Russian announced: “Ya — UVB-76. 18008. BROMAL: Boris, Roman, Olga, Mikhail, Anna, Larisa. 742, 799, 14.”The same message was repeated several times before the beep sequence repeated and the buzzer resumed.

• A similar voice message was broadcast on September 12, 2002, but with extreme distortion (possibly as a result of the source being too close to the microphone head) that rendered comprehension very difficult. This second voice broadcast has been partially translated as “UVB-76, UVB-76. 62691 Izafet 3693 8270.”

• A third voice message was broadcast on February 21, 2006 at 7:57 GMT. (recording of the third voice transmission) Again, the speaking voice was highly distorted, but the message’s content translates as: “75-59-75-59. 39-52-53-58. 5-5-2-5. Konstantin-1-9-0-9-0-8-9-8-Tatiana-Oksana-Anna-Elena-Pavel-Schuka. Konstantin 8-4. 9-7-5-5-9-Tatiana. Anna Larisa Uliyana-9-4-1-4-3-4-8.”These names are found in some Russian spelling alphabets, similar to the NATO phonetic alphabet.

• A possible fourth message was broadcast on September 29, 2009.