NIL HEARDRECEPTION LOG

UVB-76 "The Buzzer"

tier B · keyed-tone

4625 kHz USB · 2026-09-25 18:08:03Z · 04:15 · received at Hamburg, Drage, 🇩🇪 Germany 🇩🇪

Spectrogram of UVB-76 "The Buzzer", 4625 kHz USB, 2026-09-25 18:08:03Z, 04:15: keyed-tone 100% · tone 536 Hz · keying 0.30 Hz depth 0.96
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.4 MB ⤓ Opus 1103 kB { }
What was heard
keyed-tone 100% · 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 39 dB — thanks to the operator. Receivers
Provenance
sha256 084bc389bec641acd16a659a87cfda22bf313a8d4ae4fe6962e84742d54ac723
source 04:15 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-25T1808Z-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.
Related