NIL HEARDRECEPTION LOG

RBW41 Murmansk radiofax

tier A · keyed-tone

5334.1 kHz USB · 2026-10-06 19:01:11Z · 03:10 · received at Hablingbo, Gotland Island, SWEDEN

Spectrogram of RBW41 Murmansk radiofax, 5334.1 kHz USB, 2026-10-06 19:01:11Z, 03:10: keyed-tone 50% · mixed 30% · morse 10% · carrier 10% · tone 390 Hz · keying 0.28 Hz depth 0.81
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.2 MB ⤓ Opus 833 kB { }
What was heard
keyed-tone 50% · mixed 30% · morse 10% · carrier 10% · tone 390 Hz · keying 0.28 Hz depth 0.81 — dominant tone 390 Hz, keyed at 0.28 Hz (depth 0.81). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Hablingbo, Gotland Island, SWEDEN (JO97ce) · Inv V 160/80/40m 30m UP · reported SNR 38 dB — thanks to the operator. Receivers
Provenance
sha256 8607e8fd2684dacdb0f6597d5f4d06a8879159418f39ba3cb508ae24afa2ddee
source 03:10 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-06T1901Z-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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