NIL HEARDRECEPTION LOG

NAVTEX

tier A · mixed

516.5 kHz USB · 2026-09-23 06:17:36Z · 09:07 · received at South West England, UK

Spectrogram of NAVTEX, 516.5 kHz USB, 2026-09-23 06:17:36Z, 09:07: mixed 79% · data 21%
spectrogram 0–6.0 kHz · analysis blocks: data mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.7 MB ⤓ Opus 2244 kB { }
What was heard
mixed 79% · data 21%. Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, South West England, UK (IO80qr) · Switched · reported SNR 38 dB — thanks to the operator. Receivers
Provenance
sha256 e29c74d977d66ddaef98f7889138529f52043c0c2756c9c392f888ab1d0f26e7
source 09:07 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T0617Z-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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