NIL HEARDRECEPTION LOG

UVB-76 "The Buzzer"

tier B · keyed-tone

4625 kHz USB · 2026-10-06 19:17:18Z · 10:00 · received at Hamburg, Drage, 🇩🇪 Germany 🇩🇪

Spectrogram of UVB-76 "The Buzzer", 4625 kHz USB, 2026-10-06 19:17:18Z, 10:00: keyed-tone 100% · tone 536 Hz · keying 0.30 Hz depth 0.95
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.3 MB ⤓ Opus 2656 kB { }
What was heard
keyed-tone 100% · tone 536 Hz · keying 0.30 Hz depth 0.95 — dominant tone 536 Hz, keyed at 0.3 Hz (depth 0.95). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Hamburg, Drage, 🇩🇪 Germany 🇩🇪 (JO53dk) · VLF broadband vertical V1.2 08/26 · reported SNR 42 dB — thanks to the operator. Receivers
Provenance
sha256 ba5f97ee4cde1cbbd6630ecbd6d0ef3fbc7e376280ecc16279cc4b01ffedf497
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-06T1917Z-4625-uvb76-4625
Heard in the record
— linked once the record exists.
Licence
CC BY 4.0 — credit NIL HEARD / Reception Log. The recording is ours; the transmission is somebody else's. Descriptions describe sound, never content — why.
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