Russian cluster beacons (MX)

tier B · carrier

7038.3 kHz USB · 2026-10-01 23:30:14Z · 10:00 · received at Assen | Netherlands

Spectrogram of Russian cluster beacons (MX), 7038.3 kHz USB, 2026-10-01 23:30:14Z, 10:00: carrier 63% · keyed-tone 23% · data 13% · tone 1761 Hz · keying 0.20 Hz depth 0.70 — spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data carrier

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.6 MB ⤓ Opus 2442 kB { }

What was heard

carrier 63% · keyed-tone 23% · data 13% · tone 1761 Hz · keying 0.20 Hz depth 0.70 — dominant tone 1761 Hz, keyed at 0.2 Hz (depth 0.7). 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 43 dB — thanks to the operator. Receivers

Provenance

sha256 85f82b0c43cded3d2a10b5ce58111a8a885d66734ca72b1b9b4329efef4478f2
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-01T2330Z-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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