NIL HEARDRECEPTION LOG

Russian cluster beacons, 16332 kHz (the freshest cluster)

tier B · keyed-tone

16331.2 kHz USB · 2026-09-26 10:54:11Z · 02:04 · received at Muurame, Finland

Spectrogram of Russian cluster beacons, 16332 kHz (the freshest cluster), 16331.2 kHz USB, 2026-09-26 10:54:11Z, 02:04: keyed-tone 100% · tone 434 Hz · keying 2.35 Hz depth 0.97
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.1 MB ⤓ Opus 526 kB { }
What was heard
keyed-tone 100% · tone 434 Hz · keying 2.35 Hz depth 0.97 — dominant tone 434 Hz, keyed at 2.35 Hz (depth 0.97). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Muurame, Finland (KP22ud) · 160m horizontal loop · reported SNR 25 dB — thanks to the operator. Receivers
Provenance
sha256 9186f94ff6663a9025d21f150cfa0d7db09d3895350c78e7c8748920f6b66080
source 02:04 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T1054Z-16331.2-mx-16332
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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