NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-25 20:09:52Z · 07:25 · received at Assen | Netherlands

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-25 20:09:52Z, 07:25: keyed-tone 100% · tone 3999 Hz · keying 1.00 Hz depth 0.97
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 8.0 MB ⤓ Opus 1667 kB { }
What was heard
keyed-tone 100% · tone 3999 Hz · keying 1.00 Hz depth 0.97 — dominant tone 3999 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, Assen | Netherlands (JO32fx) · Active Loop antenna PAHGOR (serial nr: 001) built by ► PA0EBC ◀ 👍 · reported SNR 44 dB — thanks to the operator. Receivers
Provenance
sha256 edd5bfa3bc85a58f997689ca6a57fb8512c829cdf47b6403b39faa0134d8b54f
source 07:25 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-25T2009Z-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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