NIL HEARDRECEPTION LOG

NAVTEX

tier A · mixed

516.5 kHz USB · 2026-09-21 03:57:40Z · 09:01 · received at Assen | Netherlands

Spectrogram of NAVTEX, 516.5 kHz USB, 2026-09-21 03:57:40Z, 09:01: mixed 96% · data 4%
spectrogram 0–6.0 kHz · analysis blocks: data mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.5 MB ⤓ Opus 2306 kB { }
What was heard
mixed 96% · data 4%. Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Assen | Netherlands (JO32fx) · Active Loop antenna PAHGOR (serial nr: 001) built by ► PA0EBC ◀ 👍 · reported SNR 41 dB — thanks to the operator. Receivers
Provenance
sha256 bc97a49bfb5b4bb2c70e3f2a11af21a6b29988da86ff4924d2222955c538ffa4
source 09:01 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0357Z-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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