HF SURVEILLANCE RECEIVER • SPEC R-4625 / NO. 0497-K
SIGNAL:
S3
SDR RELAY:
0.5 ms • Groundwave
VFO TUNING: 4625.0 kHz
70%

Generates synthetic live drone simulation via Web Audio API.

📡 IONOSPHERIC TELEMETRY SOL-TERRA FEED
SOLAR FLUX (SFI) 148 SFU Enhanced Skywave Reflection
K-INDEX GEOMAG 2 (QUIET) Low Magnetic Distortion
DUCTING LAYER F2-LAYER ACTIVE Shortwave Range > 3,500km

The 40-Year Heartbeat of Povarovo

LOC: 56°5′0″N 37°6′37″E BAND: 4625 kHz SINCE: ~1973

Somewhere in the cold marshland northwest of Moscow, a relentless shortwave drone has ticked like a wounded clock every two seconds without interruption across six decades.

The Signature

A monotone buzz repeated ~25 to 30 times per minute, 24 hours a day. During rare intervals, the buzzing cuts out abruptly and cold, hurried human voices recite Russian names and military cipher strings: "Ya hydroplane 45 78 92 01."

The Dead Man's Switch Myth

Popular folklore posits it as the trigger for the Soviet Perimetr system (a nuclear retaliatory fail-safe). However, ionospheric radio engineers point to something more plausible yet equally strange: an atmospheric probe monitoring ion density over European skies.

Three Documented Anomalies in the Feed

  • 1997-12-24
    The Voice of Christmas Eve

    The buzzer halted completely. A human voice whispered numerical callsigns into a hot mic before laughter echoed in the background and the monotone drone slammed back on.

  • 2010-09-01
    The Relocation Flit

    The entire transmission vanished for 72 hours, then roared back to life from an entirely different triangulation point in western Russia near Pskov.

  • 2020-05-11
    The Phantom Ballet

    For roughly three minutes, Swan Lake played over the carrier wave at low fidelity, distorted by magnetic flutter, before dissolving back into buzz pulses.

🧭 TRANSMITTER TRIANGULATION MATRIX DF RECON

Multi-point radio direction finding (DF) telemetry of confirmed and historical UVB-76 transmitter installations.

⏱️ HISTORICAL INTERCEPT LOGBOOK (1982–2024)

Chronological intercepts from the global shortwave listener intelligence network. Filter verified events by telemetry signature.

1982 CARRIER ORIGIN
First Documented SWL Tape

European amateur monitors log continuous repetitive two-second drone pulses centered at 4625 kHz, originating near military base #430 in Povarovo.

1997 VOICE DISPATCH
First Decoded Callsign "UVB-76"

Female operator breaks regular carrier tone at 21:58 UTC: "Ya UVB-76, Ya UVB-76. 180 08 BROMAL 74 27 99 14." Confirming voice broadcast capability.

2010 RELOCATION
The Povarovo Base Evacuation

Urban explorers document the abandoned military station in Povarovo filled with snowdrifts and logbooks. Triangulation places the new transmission source near Kerro Massif & Naro-Fominsk.

2020 VOICE DISPATCH
Callsign Morph: "ANVF"

After decades of MDZhB identification, the transmitter operator switched primary identification prefix to ANVF (Anna Nikolai Vasily Fedor) accompanied by rapid five-digit cipher trains.

2022 PIRATE INTRUSION
Waterfall Spectrogram Hijacking

Decentralized WebSDR enthusiasts exploit high-power pirate transmitters to paint meme graphics and Korean pop audio directly onto the UVB-76 waterfall spectrum.

SIGNAL RECON • RECORDED INTERCEPT STATION CALLSIGN IDENT
> RAW INTERCEPT: МДЖБ 76 497 ПОПЛАВОК 84 45 92 10
SWL FIELD LOG FORM 4625-REC

Listener Reception Report

Log your shortwave intercept into the telemetry registry using the international standard RST signal audibility metric.

DISPATCH #002 PREVIEW

Next Frequency: The 52-Hertz Wanderer

Tracking the loneliest call in the North Pacific Ocean — a marine acoustic anomaly that sings at a pitch no other whale can hear or answer.

Next signal opens in: 23:59:59

Archive Registry

#001
UVB-76 (The Buzzer) 4625 kHz shortwave military cipher loop
ACTIVE
#002
52-Hertz Whale & The Pacific Hydrophones SOSUS submarine tracking arrays, 1989
LOCKED
#003
The Lincolnshire Poacher MI6 numbers station using an electronic music box
LOCKED