NIL HEARDRECEPTION LOG

Russian cluster beacons (MX)

tier B · keyed-tone

7038.3 kHz USB · 2026-09-26 02:29:00Z · 05:12 · received at Brettnach F57320

Spectrogram of Russian cluster beacons (MX), 7038.3 kHz USB, 2026-09-26 02:29:00Z, 05:12: keyed-tone 44% · data 31% · carrier 19% · morse 6% · tone 964 Hz · keying 0.24 Hz depth 0.99
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse data carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.4 MB ⤓ Opus 1360 kB { }
What was heard
keyed-tone 44% · data 31% · carrier 19% · morse 6% · tone 964 Hz · keying 0.24 Hz depth 0.99 — dominant tone 964 Hz, keyed at 0.24 Hz (depth 0.99). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Brettnach F57320 (JN39GG) · vertical · reported SNR 41 dB — thanks to the operator. Receivers
Provenance
sha256 e8c961c92bba87241924abd884e079b7ba53f72ca7acff00cd00bdb17cff684d
source 05:12 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T0229Z-7038.3-mx-7039
Heard in the record
Reception Conditions Were Poor — “The Buzzer Never Stopped”
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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