WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-26 19:31:11Z · 03:06 · received at Assen | Netherlands

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-26 19:31:11Z, 03:06: keyed-tone 60% · morse 30% · carrier 10% · tone 3999 Hz · keying 0.30 Hz depth 0.77 — spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.0 MB ⤓ Opus 717 kB { }

What was heard

keyed-tone 60% · morse 30% · carrier 10% · tone 3999 Hz · keying 0.30 Hz depth 0.77 — dominant tone 3999 Hz, keyed at 0.3 Hz (depth 0.77). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.

Receiver

KiwiSDR, Assen | Netherlands (JO32fx) · Active Loop antenna PAHGOR (serial nr: 001) built by ► PA0EBC ◀ 👍 · reported SNR 45 dB — thanks to the operator. Receivers

Provenance

sha256 b4e4aa54a2acf9332f752d1f190fb729ef1d70266c82d2f5074d4132e4aa2b17
source 03:06 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T1931Z-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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