NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-10-05 20:31:14Z · 02:07 · received at Shrewsbury, Vermont, USA

Spectrogram of WWV time signal, 10000 kHz AM, 2026-10-05 20:31:14Z, 02:07: keyed-tone 71% · carrier 29% · tone 680 Hz · keying 0.28 Hz depth 0.58
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.2 MB ⤓ Opus 509 kB { }
What was heard
keyed-tone 71% · carrier 29% · tone 680 Hz · keying 0.28 Hz depth 0.58 — dominant tone 680 Hz, keyed at 0.28 Hz (depth 0.58). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Shrewsbury, Vermont, USA (FN33om) · 82m (270ft) center fed doublet @ 20m (65ft) MF through HF · reported SNR 25 dB — thanks to the operator. Receivers
Provenance
sha256 c18cfc9205976b4a0ac17fbc96ab17f2b9cf774f9ce5d78ec5b074c5022404c3
source 02:07 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-05T2031Z-10000-wwv-10000-na
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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