NIL HEARDRECEPTION LOG

NAVTEX

tier A · mixed

516.5 kHz USB · 2026-09-25 13:38:51Z · 07:53 · received at Larvik, Norway

Spectrogram of NAVTEX, 516.5 kHz USB, 2026-09-25 13:38:51Z, 07:53: mixed 100%
spectrogram 0–6.0 kHz · analysis blocks: mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 8.1 MB ⤓ Opus 2135 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, Larvik, Norway (JO49xa) · dipole · reported SNR 31 dB — thanks to the operator. Receivers
Provenance
sha256 681a09b3b7853784ee6940d50c1165fd13e8456972169d9b9d8872443e334947
source 07:53 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-25T1338Z-516.5-navtex-518
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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