NIL HEARDRECEPTION LOG

UVB-76 "The Buzzer"

tier B · keyed-tone

4625 kHz USB · 2026-10-03 18:19:38Z · 03:03 · received at Heppen, Limburg, Belgium

Spectrogram of UVB-76 "The Buzzer", 4625 kHz USB, 2026-10-03 18:19:38Z, 03:03: keyed-tone 80% · mixed 20% · tone 425 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 2.8 MB ⤓ Opus 693 kB { }
What was heard
keyed-tone 80% · mixed 20% · tone 425 Hz · keying 0.30 Hz depth 0.96 — dominant tone 425 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, Heppen, Limburg, Belgium (JO21oc) · Longwire 54m top 70m above sealevel · reported SNR 39 dB — thanks to the operator. Receivers
Provenance
sha256 441455e3b9e7c62ae85aed593293b3e2750f140ce8ea842436321d4b54f4e8e3
source 03:03 WAV, 12000 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-03T1819Z-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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