NIL HEARDRECEPTION LOG

NAVTEX

tier A · mixed

488.5 kHz USB · 2026-09-24 09:49:02Z · 10:00 · received at Larvik, Norway

Spectrogram of NAVTEX, 488.5 kHz USB, 2026-09-24 09:49:02Z, 10:00: mixed 70% · data 30%
spectrogram 0–6.0 kHz · analysis blocks: data mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.1 MB ⤓ Opus 2905 kB { }
What was heard
mixed 70% · data 30%. Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Larvik, Norway (JO49xa) · dipole · reported SNR 29 dB — thanks to the operator. Receivers
Provenance
sha256 4f94bc4c9f7cf1c5bb59aed0a65ecec466f24dac8cb932fc8dc9d2a563c240c6
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-24T0949Z-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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