NIL HEARDRECEPTION LOG

Russian cluster beacons (MX)

tier B · keyed-tone

7038.3 kHz USB · 2026-09-19 23:41:31Z · 10:00 · received at Brettnach F57320

Spectrogram of Russian cluster beacons (MX), 7038.3 kHz USB, 2026-09-19 23:41:31Z, 10:00: keyed-tone 37% · morse 33% · carrier 23% · mixed 3% · data 3% · tone 1816 Hz · keying 0.35 Hz depth 0.77
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse data carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.5 MB ⤓ Opus 2516 kB { }
What was heard
keyed-tone 37% · morse 33% · carrier 23% · mixed 3% · data 3% · tone 1816 Hz · keying 0.35 Hz depth 0.77 — dominant tone 1816 Hz, keyed at 0.35 Hz (depth 0.77). 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 44 dB — thanks to the operator. Receivers
Provenance
sha256 50d2d9e35f459b4310fa296f07b6a1702f5542cd99d2027e2c185bfd4fc309e4
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-19T2341Z-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.
Related