NIL HEARDRECEPTION LOG

RBW41 Murmansk radiofax

tier A · mixed

5334.1 kHz USB · 2026-09-22 03:31:47Z · 10:00 · received at Siknas Sweden

Spectrogram of RBW41 Murmansk radiofax, 5334.1 kHz USB, 2026-09-22 03:31:47Z, 10:00: mixed 90% · morse 7% · keyed-tone 3% · tone 363 Hz · keying 0.25 Hz depth 0.85
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.3 MB ⤓ Opus 2541 kB { }
What was heard
mixed 90% · morse 7% · keyed-tone 3% · tone 363 Hz · keying 0.25 Hz depth 0.85 — dominant tone 363 Hz, keyed at 0.25 Hz (depth 0.85). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Siknas Sweden (KP15HU) · Miltary type wideband dipole antenna (Hängmatta) · reported SNR 34 dB — thanks to the operator. Receivers
Provenance
sha256 c94a0a4cc50e8e3acf80425b7ae7cf5522e1796461ea93a8299320f6fed8ade7
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T0331Z-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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