WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-18 20:06:01Z · 01:00 · received at TREMOLAT (24), FRANCE

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-18 20:06:01Z, 01:00: noise 67% · keyed-tone 33% · tone 4002 Hz · keying 0.55 Hz depth 0.98 — spectrogram 0–6.0 kHz · analysis blocks: keyed-tone noise

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 1.1 MB ⤓ Opus 229 kB { }

What was heard

noise 67% · keyed-tone 33% · tone 4002 Hz · keying 0.55 Hz depth 0.98 — dominant tone 4002 Hz, keyed at 0.55 Hz (depth 0.98). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.

Receiver

KiwiSDR, TREMOLAT (24), FRANCE (JN04ku) · Vertical pylon isolated 11 meters (ou Mini-Whip dual FET) · reported SNR 41 dB — thanks to the operator. Receivers

Provenance

sha256 f5d52a5b2825f8d35e094ac04423d1e0c942e210d4cb03365b8308abc16d5bf7
source 01:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-18T2006Z-10000-wwv-10000

Heard in the record

— linked once the record exists.

Notes

rig: Target not heard: spectrum is flat broadband noise with no WWV tone (no 500/600/1000 Hz carrier). The 10 MHz path from western France to Colorado was not open at 20:06 UTC. Kept as Tier-A atmospherics, which is usable material, but this is NOT a time-signal capture.

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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