NIL HEARDRECEPTION LOG

RBW41 Murmansk radiofax

tier A · keyed-tone

5334.1 kHz USB · 2026-10-06 05:01:57Z · 05:50 · received at Sweden

Spectrogram of RBW41 Murmansk radiofax, 5334.1 kHz USB, 2026-10-06 05:01:57Z, 05:50: keyed-tone 61% · carrier 28% · morse 11% · tone 392 Hz · keying 0.55 Hz depth 0.83
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 6.0 MB ⤓ Opus 1507 kB { }
What was heard
keyed-tone 61% · carrier 28% · morse 11% · tone 392 Hz · keying 0.55 Hz depth 0.83 — dominant tone 392 Hz, keyed at 0.55 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 26 dB — thanks to the operator. Receivers
Provenance
sha256 c06957d60ca93e4ac9aab880dd8eab54b348b4de1234b08e9f47d4de4a9a2b3b
source 05:50 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-06T0501Z-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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