RBW41 Murmansk radiofax

tier A · keyed-tone

5334.1 kHz USB · 2026-10-03 00:54:58Z · 02:47 · received at Sweden

Spectrogram of RBW41 Murmansk radiofax, 5334.1 kHz USB, 2026-10-03 00:54:58Z, 02:47: keyed-tone 44% · mixed 22% · morse 11% · data 11% · carrier 11% · tone 392 Hz · keying 0.20 Hz depth 0.71 — spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse data carrier mixed

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.8 MB ⤓ Opus 734 kB { }

What was heard

keyed-tone 44% · mixed 22% · morse 11% · data 11% · carrier 11% · tone 392 Hz · keying 0.20 Hz depth 0.71 — dominant tone 392 Hz, keyed at 0.2 Hz (depth 0.71). 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 d04396c6db2a33258525226b5243d2692b7bfb2d8e09a292d059e8056cf16999
source 02:47 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-03T0054Z-5334.1-wxfax-rbw-5336

Heard in the record

Reception Conditions Were Poor — “Silent Key”

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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