NIL HEARDRECEPTION LOG

RBW41 Murmansk radiofax

tier A · keyed-tone

5334.1 kHz USB · 2026-10-04 21:20:08Z · 02:59 · received at Sweden

Spectrogram of RBW41 Murmansk radiofax, 5334.1 kHz USB, 2026-10-04 21:20:08Z, 02:59: keyed-tone 56% · mixed 33% · carrier 11% · tone 392 Hz · keying 0.35 Hz depth 0.83
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.0 MB ⤓ Opus 765 kB { }
What was heard
keyed-tone 56% · mixed 33% · carrier 11% · tone 392 Hz · keying 0.35 Hz depth 0.83 — dominant tone 392 Hz, keyed at 0.35 Hz (depth 0.83). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Sweden (JO78mn) · 41 m EFHW · reported SNR 35 dB — thanks to the operator. Receivers
Provenance
sha256 57828e0d0fd2b4fb4ecc183a874e8ff5def0e8d7b62362667f0d90b9d9118b03
source 02:59 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-04T2120Z-5334.1-wxfax-rbw-5336
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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