NIL HEARDRECEPTION LOG

Russian cluster beacons, 16332 kHz (the freshest cluster)

tier B · keyed-tone

16331.2 kHz USB · 2026-09-26 07:14:28Z · 10:00 · received at Esztergom - GRANTE Tower, Hungary

Spectrogram of Russian cluster beacons, 16332 kHz (the freshest cluster), 16331.2 kHz USB, 2026-09-26 07:14:28Z, 10:00: keyed-tone 73% · carrier 13% · data 10% · voice 3% · tone 697 Hz · keying 0.45 Hz depth 0.98
spectrogram 0–6.0 kHz · analysis blocks: voice keyed-tone data carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.3 MB ⤓ Opus 2548 kB { }
What was heard
keyed-tone 73% · carrier 13% · data 10% · voice 3% · tone 697 Hz · keying 0.45 Hz depth 0.98 — dominant tone 697 Hz, keyed at 0.45 Hz (depth 0.98). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Esztergom - GRANTE Tower, Hungary (JN97IS) · Inv. V 80m · reported SNR 26 dB — thanks to the operator. Receivers
Provenance
sha256 0c2f581c43e39b510141c0dbac74829dee7bf40452c5d7f075a9360145a67d58
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T0714Z-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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