UVB-76, also known by the nickname “The Buzzer”, is a shortwave radio station that broadcasts in Upper Side Band mode on the frequency of 4625 kHz. It broadcasts a short, monotonous, repeating at a rate of approximately 25 tones per minute, 24 hours per day. Sometimes, the buzzer signal is interrupted and a voice transmission in Russian takes place, often containing cryptic codes or names like “MDZhB.” Its purpose remains unknown, with theories suggesting it’s a military signal, numbers station, or part of Russia’s “Dead Hand” nuclear retaliation system. The station’s signal is strong, audible globally, and its transmitter is believed to be near Moscow, possibly at a military facility. Despite speculation, no official confirmation of its function exists, fueling intrigue among radio enthusiasts.
Last month it broke silence.
Russia’s mysterious “Doomsday” radio station, UVB-76, just sent out four eerie, cryptic messages in only 24 hours: Neptune, Thymus, Foxcloak, and Nootabu.
— Shadow of Ezra (@ShadowofEzra) April 15, 2025
Active since 1975, this Cold War-era shortwave station usually emits nothing but a static buzz — until something big is… pic.twitter.com/zs8WUAr4hz
This UVB-76 transmission, as analyzed, consists of four blocks of Russian names and numbers that encode the cryptic words Neptune, Thymus, Foxcloak, and Nootabu, suggesting a multi-stage Russian military or strategic operation. Each block provides operational details:
- Neptune (Naval Operation): Names (Nikolai, Elena, Pavel, Tatiana, Uliyana, Nikolai) encode NEPTUN. Numbers (33, 702, 66, 52, 20, 75) suggest a naval unit (33rd fleet, ship ID 702), staging at 66°E, 52°N (Russia), executed at 20:00 with a 75-minute offset (21:15).
- Thymus (Bioweapons Defense): Names (Tatiana, Ivan, Michael, Uliyana, Simeon) encode TIMUS. Numbers (8002, 361, 1162, 56, 85) indicate protocol 8002, 1162 units, and a defensive zone at 56°N, 85°E (Siberia), executed at 00:56.
- Foxcloak (Covert Operation): Names (Leonid, Simeon, Olga, Pavel, Leonid, Anna, Shuka) loosely encode Foxcloak (phonetic match). Numbers (7000, 0, 8002, 67, 203, 08, 09) suggest a false flag operation linked to bioweapons (protocol 8002), executed at 08:09.
- Nootabu (Geopolitical Statement): Names (Nikolai, Uliyana, Tatiana, Olga, Boris, Anna, Constantine, Simeon) encode NUTOBACS. Numbers (62, 405, 78, 15, 92, 71) indicate a diplomatic code (62, 405) and target zones at 78°E, 15°N (Andaman Sea) and 92°E, 71°N (Arctic).
Summary: The transmission outlines a complex operation involving naval maneuvers (Neptune), bioweapons defense (Thymus), a covert false flag (Foxcloak), and a geopolitical statement (Nootabu), with specific coordinates, timings, and codes for execution, possibly rejecting Western influence.