NIL HEARDRECEPTION LOG

UVB-76 "The Buzzer"

tier B · keyed-tone

4625 kHz USB · 2026-10-02 19:00:57Z · 03:22 · received at Hamburg, Drage, 🇩🇪 Germany 🇩🇪

Spectrogram of UVB-76 "The Buzzer", 4625 kHz USB, 2026-10-02 19:00:57Z, 03:22: keyed-tone 91% · mixed 9% · tone 536 Hz · keying 0.30 Hz depth 0.96
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.5 MB ⤓ Opus 858 kB { }
What was heard
keyed-tone 91% · mixed 9% · tone 536 Hz · keying 0.30 Hz depth 0.96 — dominant tone 536 Hz, keyed at 0.3 Hz (depth 0.96). 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 54459db1e655317a52cc814f3ca30c523a6c24239d0d24be7580d9f329648b9c
source 03:22 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-02T1900Z-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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