NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-20 12:09:14Z · 10:01 · received at Montmorillon 86500 FRANCE

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-20 12:09:14Z, 10:01: keyed-tone 94% · carrier 6% · tone 3972 Hz · keying 1.00 Hz depth 0.97
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 11.0 MB ⤓ Opus 2298 kB { }
What was heard
keyed-tone 94% · carrier 6% · tone 3972 Hz · keying 1.00 Hz depth 0.97 — dominant tone 3972 Hz, keyed at 1.0 Hz (depth 0.97). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Montmorillon 86500 FRANCE (JN05ot) · Antenna Shared Apex SAL 30 array solution · reported SNR 35 dB — thanks to the operator. Receivers
Provenance
sha256 78d233d01a257cebeb0e3c24bbd502d0c16062ae7b2430cc70a19e7d84c1f3b3
source 10:01 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-20T1209Z-10000-wwv-10000
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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