NIL HEARDRECEPTION LOG

Russian cluster beacons (MX)

tier B · carrier

7038.3 kHz USB · 2026-09-22 23:52:21Z · 04:52 · received at Assen | Netherlands

Spectrogram of Russian cluster beacons (MX), 7038.3 kHz USB, 2026-09-22 23:52:21Z, 04:52: carrier 73% · keyed-tone 27% · tone 1784 Hz · keying 0.20 Hz depth 0.79
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.1 MB ⤓ Opus 1217 kB { }
What was heard
carrier 73% · keyed-tone 27% · tone 1784 Hz · keying 0.20 Hz depth 0.79 — dominant tone 1784 Hz, keyed at 0.2 Hz (depth 0.79). 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 44fbc9a5149a1c44e27d588243a15bf65c62011affd9f5a6f7af57e016d7cdb1
source 04:52 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T2352Z-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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