NIL HEARDRECEPTION LOG

NAVTEX

tier A · data

516.5 kHz USB · 2026-09-26 03:38:48Z · 08:25 · received at Brettnach F57320

Spectrogram of NAVTEX, 516.5 kHz USB, 2026-09-26 03:38:48Z, 08:25: data 65% · mixed 31% · morse 4% · tone 1588 Hz · keying 7.16 Hz depth 0.86
spectrogram 0–6.0 kHz · analysis blocks: morse data mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.1 MB ⤓ Opus 2062 kB { }
What was heard
data 65% · mixed 31% · morse 4% · tone 1588 Hz · keying 7.16 Hz depth 0.86 — dominant tone 1588 Hz, keyed at 7.16 Hz (depth 0.86). 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 40 dB — thanks to the operator. Receivers
Provenance
sha256 4b3a87b78bb663a629deca63663a21fae44a85cd36658b2b9ce1839f23e4b57b
source 08:25 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T0338Z-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