Anyone who has been on the radio for some time in their life certainly knows what the UVB-76 or UZB-76 call sign is. It basically broadcasts on 4625 kHz from Russia and is known as Buzzer. The main reason for this is that the signal emits 25 hums per minute monotonously at every hour of every day. In principle, it has been broadcasting continuously since 1982, and to this day it is not known what its purpose is.
Zümmögő 2 has now joined Zümmögő
According to most theories, it is a military sign, the purpose of which is the so-called Assuring a dead-handed counterattack. This would allow it to automatically launch nuclear strikes on targets in the event of the destruction of the entire Russian military leadership. It was a huge surprise for the radio operators that a few days ago a second Zümmögő also started, on almost the same frequency. Radio fanatics immediately started to determine where the new Zümmögő could broadcast from and identified several potential locations. However, even now, everyone is only speculating about what the purpose of the radiation could be. It helps to determine this by the fact that messages in Russian are sometimes played on the new Zümmög, just like on the old one. By the way, the original Buzzer broadcasts from Povarovo, 40 kilometers from Moscow.
One of the most likely theories is that the hum in both cases is just to keep the frequency free when needed. According to other theories, compressed data would have such a noise-like sound. The answer is the theory of a system that automatically launches a nuclear strike it is less likely for many, because the broadcasting of the original Zümmögő was often stopped for a long time. But since there are sometimes conversations in the background with both buzzers, the radio operators they believe, that somewhere there might be a microphone placed next to a device at some station. In the video below, English radio personalities reflect on the old and new Zümmögő: