NIL HEARDRECEPTION LOG

Russian cluster beacons (MX)

tier B · carrier

7038.3 kHz USB · 2026-09-24 01:50:38Z · 06:37 · received at Brettnach F57320

Spectrogram of Russian cluster beacons (MX), 7038.3 kHz USB, 2026-09-24 01:50:38Z, 06:37: carrier 40% · keyed-tone 40% · morse 20% · tone 1828 Hz · keying 0.20 Hz depth 0.75
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 7.0 MB ⤓ Opus 1647 kB { }
What was heard
carrier 40% · keyed-tone 40% · morse 20% · tone 1828 Hz · keying 0.20 Hz depth 0.75 — dominant tone 1828 Hz, keyed at 0.2 Hz (depth 0.75). 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 1bc2d90a3d817f62668553863e0a7b1e20fa43648abc5878b13212b7d4d26907
source 06:37 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-24T0150Z-7038.3-mx-7039
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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