NIL HEARDRECEPTION LOG

Russian cluster beacons (MX)

tier B · morse

7038.3 kHz USB · 2026-09-21 02:00:47Z · 03:23 · received at Assen | Netherlands

Spectrogram of Russian cluster beacons (MX), 7038.3 kHz USB, 2026-09-21 02:00:47Z, 03:23: morse 46% · carrier 36% · keyed-tone 18% · tone 1799 Hz · keying 0.25 Hz depth 0.78
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.6 MB ⤓ Opus 843 kB { }
What was heard
morse 46% · carrier 36% · keyed-tone 18% · tone 1799 Hz · keying 0.25 Hz depth 0.78 — dominant tone 1799 Hz, keyed at 0.25 Hz (depth 0.78). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Assen | Netherlands (JO32fx) · Active Loop antenna PAHGOR (serial nr: 001) built by ► PA0EBC ◀ 👍 · reported SNR 42 dB — thanks to the operator. Receivers
Provenance
sha256 edb0063c933743e067c823f5e2300f433141b7d4e409dacdbced725c03b443fc
source 03:23 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0200Z-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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