NIL HEARDRECEPTION LOG

NAVTEX

tier A · mixed

516.5 kHz USB · 2026-10-01 20:18:49Z · 05:55 · received at Brettnach F57320

Spectrogram of NAVTEX, 516.5 kHz USB, 2026-10-01 20:18:49Z, 05:55: mixed 94% · voice 6% · keying 0.20 Hz depth 0.70
spectrogram 0–6.0 kHz · analysis blocks: voice mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 6.1 MB ⤓ Opus 1572 kB { }
What was heard
mixed 94% · voice 6% · keying 0.20 Hz depth 0.70, keyed at 0.2 Hz (depth 0.7). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Brettnach F57320 (JN39GG) · vertical · reported SNR 45 dB — thanks to the operator. Receivers
Provenance
sha256 b10e9829978281fe1533559da6d3fb67377c7050ee636c8bb00506c6cd2c66da
source 05:55 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-01T2018Z-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.
Related