How old is UVB-76?
The radio signal that occupies 4625 kHz has reportedly been broadcasting since the late 1970s. The earliest known recording of it is dated 1982. Ever since curious owners of shortwave radios first discovered the signal, it has broadcast a repeating buzzing noise.
Can you tune into UVB-76?
Tune the dial to 4625 kHz and you’ll hear a repetitive buzzing noise. This obnoxious station goes by the call sign UVB-76, but shortwave aficionados call it The Buzzer. The speculation is that the The Buzzer has something to do with Russian military operations or intelligence, but that’s never been confirmed.
What is UVB-76 used for?
The function of the mysterious transmitter has been revealed: UVB-76 is used to transfer orders to military personnel, along with the time at which they should be executed.
Why do AM stations power down at night?
Most AM radio stations are required by the FCC’s rules to reduce their power or cease operating at night in order to avoid interference to other AM stations. However, during nighttime hours the AM signals can travel over hundreds of miles by reflection from the ionosphere, a phenomenon called “skywave” propagation.
Why does AM radio get bad at night?
Due to atmospheric changes at night, AM signals travel farther than during the day; hence we need to power down the signal to prevent interference with other AM radio stations. Please note that as the time of sunset and sunrise change during the year, so does the time that we adjust the power of our AM station.
What is another name for UVB-76?
For other uses, see Buzzer (disambiguation). UVB-76, also known by the nickname ” The Buzzer “, is a shortwave radio station that broadcasts on the frequencies 4625 and 4810 kHz. It broadcasts a short, monotonous buzz tone (help·info), repeating at a rate of approximately 25 tones per minute, 24 hours per day.
What frequency is uvuvb 76?
UVB-76, also known as “The Buzzer”, is the nickname given by radio listeners to a shortwave radio station that broadcasts on the frequency 6998 kHz. It broadcasts a short, monotonous buzz tone , repeating at a rate of approximately 25 tones per minute, 24 hours per day.
How far away was UVB-76’s transmission?
A short clip of UVB-76’s transmission as heard in Southern Finland, 860 km (530 mi) away from the station in 2002. Problems playing this file? See media help.
What type of modulation does uvb76 use?
A spectrum for UVB-76 showing the suppressed lower sideband. The station transmits using AM with a suppressed lower sideband (USB modulation), but it has also used full double-sideband AM (A3E). The signal consists of a buzzing sound that lasts 1.2 seconds, pausing for 1–1.3 seconds, and repeating 21–34 times per minute.