NIL HEARDRECEPTION LOG

NAVTEX

tier A · mixed

516.5 kHz USB · 2026-10-06 02:47:52Z · 08:58 · received at Montmorillon 86500 FRANCE

Spectrogram of NAVTEX, 516.5 kHz USB, 2026-10-06 02:47:52Z, 08:58: mixed 96% · morse 4% · tone 1424 Hz · keying 7.16 Hz depth 0.88
spectrogram 0–6.0 kHz · analysis blocks: morse mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.1 MB ⤓ Opus 2562 kB { }
What was heard
mixed 96% · morse 4% · tone 1424 Hz · keying 7.16 Hz depth 0.88 — dominant tone 1424 Hz, keyed at 7.16 Hz (depth 0.88). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Montmorillon 86500 FRANCE (JN06kj) · Antenna Shared Apex SAL 30 array solution · reported SNR 44 dB — thanks to the operator. Receivers
Provenance
sha256 29c77ba035d2acb9090f4a3b0797cc1ae04360464bf36e0f39cd56457d5c9a64
source 08:58 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-06T0247Z-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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