Hamsphere QSL cards

Wednesday, August 2, 2017

“MDZhB” has been broadcasting since 1982. No one knows why.


UVB-76, also known as "the Buzzer", is the nickname given by radio listeners to a shortwave radio station that broadcasts on the frequency 4625 kHz.[1][2] It broadcasts a short, monotonous About this sound buzz tone , repeating at a rate of approximately 25 tones per minute, 24 hours per day.[1] Sometimes, the buzzer signal is interrupted and a voice transmission in Russian takes place.[3] The first reports were made of a station on this frequency in 1973.[4] Its origins have been traced to Russia, and although several theories with varying degrees of plausibility exist, its actual purpose has never been officially confirmed and remains a source of speculation.[5]


UVB-76 (УВБ76 en russe) était l'indicatif d'une station de radio ondes courtes, remplacé en par l'indicatif MDZhB (МДЖБ en russe, orthographe phonétique "Mikhail Dmitri Zhenya Boris"), puis en par l'indicatif ZhUOZ (ЖУОЗ en russe, orthographe phonétique "Zhenya Ulyana Olga Zinaid"). La station émet généralement sur la fréquence 4 625 kHz (Fréquences non répertoriées pour les radioamateurs) (en modulation d'amplitude). Elle transmet un bourdonnement environ 25 fois par minute, toute la journée et ceci presque sans interruption depuis au moins 1982[1]. De par le son entendu, cette station a reçu le surnom de The Buzzer.