![The mysterious Russian UVB-76 transmitter has been transmitting a mysterious signal in the shortwave band at a frequency of 4,625 kHz since the 1970s Stock Photo - Alamy The mysterious Russian UVB-76 transmitter has been transmitting a mysterious signal in the shortwave band at a frequency of 4,625 kHz since the 1970s Stock Photo - Alamy](https://c8.alamy.com/comp/2HJFP5X/the-mysterious-russian-uvb-76-transmitter-has-been-transmitting-a-mysterious-signal-in-the-shortwave-band-at-a-frequency-of-4625-khz-since-the-1970s-2HJFP5X.jpg)
The mysterious Russian UVB-76 transmitter has been transmitting a mysterious signal in the shortwave band at a frequency of 4,625 kHz since the 1970s Stock Photo - Alamy
![The Buzzer (UVB-76) Numbers Radio Station LIVE @ 4625 KHz, Tue, Apr 14, 2020 at 8:09 AM (PDT) in Science & Technology Live Stream - IRL The Buzzer (UVB-76) Numbers Radio Station LIVE @ 4625 KHz, Tue, Apr 14, 2020 at 8:09 AM (PDT) in Science & Technology Live Stream - IRL](https://img.irl.com/e500/https://i.ytimg.com/vi/ytfdkFGp2cM/hqdefault_live.jpg)
The Buzzer (UVB-76) Numbers Radio Station LIVE @ 4625 KHz, Tue, Apr 14, 2020 at 8:09 AM (PDT) in Science & Technology Live Stream - IRL
![The mysterious Russian UVB-76 transmitter has been transmitting a mysterious signal in the shortwave band at a frequency of 4,625 kHz since the 1970s Stock Photo - Alamy The mysterious Russian UVB-76 transmitter has been transmitting a mysterious signal in the shortwave band at a frequency of 4,625 kHz since the 1970s Stock Photo - Alamy](https://c8.alamy.com/zooms/6/78c43fb0b4de471da251b4d8723e6435/2hjfp81.jpg)