NIL HEARDRECEPTION LOG

NAVTEX

tier A · mixed

516.5 kHz USB · 2026-09-19 22:19:37Z · 10:00 · received at Ireland

Spectrogram of NAVTEX, 516.5 kHz USB, 2026-09-19 22:19:37Z, 10:00: mixed 93% · carrier 7% · tone 1585 Hz
spectrogram 0–6.0 kHz · analysis blocks: carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.5 MB ⤓ Opus 2579 kB { }
What was heard
mixed 93% · carrier 7% · tone 1585 Hz — dominant tone 1585 Hz. Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Ireland (IO53mw) · Dipole · reported SNR 41 dB — thanks to the operator. Receivers
Provenance
sha256 593817bcec8a379ffac46cd682c7f4d089fbc86f0895de394c603a0630452e4e
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-19T2219Z-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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