NIL HEARDRECEPTION LOG

NAVTEX

tier A · mixed

488.5 kHz USB · 2026-09-21 05:50:05Z · 06:39 · received at Montmorillon 86500 FRANCE

Spectrogram of NAVTEX, 488.5 kHz USB, 2026-09-21 05:50:05Z, 06:39: mixed 100%
spectrogram 0–6.0 kHz · analysis blocks: mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 7.0 MB ⤓ Opus 1713 kB { }
What was heard
mixed 100%. Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Montmorillon 86500 FRANCE (JN05ot) · Antenna Shared Apex SAL 30 array solution · reported SNR 44 dB — thanks to the operator. Receivers
Provenance
sha256 87f95d56d6a4f0775f37115b8ebb932c4a451fe2686b337d0f64adcf06cbde6b
source 06:39 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0550Z-488.5-navtex-490
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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