NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-10-03 12:29:12Z · 10:00 · received at South West England, UK

Spectrogram of WWV time signal, 10000 kHz AM, 2026-10-03 12:29:12Z, 10:00: keyed-tone 57% · carrier 27% · morse 17% · tone 3972 Hz · keying 0.25 Hz depth 0.86
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.9 MB ⤓ Opus 2397 kB { }
What was heard
keyed-tone 57% · carrier 27% · morse 17% · tone 3972 Hz · keying 0.25 Hz depth 0.86 — dominant tone 3972 Hz, keyed at 0.25 Hz (depth 0.86). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, South West England, UK (IO80qr) · Switched · reported SNR 33 dB — thanks to the operator. Receivers
Provenance
sha256 ee07d74e40da0d4b5988198eba3d9f5078f2ee43ed6145535ad949612a071876
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-03T1229Z-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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