NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-22 02:01:26Z · 02:48 · received at Tellico Plains, TN USA

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-22 02:01:26Z, 02:48: keyed-tone 78% · carrier 22% · tone 439 Hz · keying 0.97 Hz depth 0.97
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.6 MB ⤓ Opus 687 kB { }
What was heard
keyed-tone 78% · carrier 22% · tone 439 Hz · keying 0.97 Hz depth 0.97 — dominant tone 439 Hz, keyed at 0.97 Hz (depth 0.97). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Tellico Plains, TN USA (EM75ul) · end-fed 173' wire @ 50' · reported SNR 41 dB — thanks to the operator. Receivers
Provenance
sha256 0decf8d494e961422cc5b9bcd2b05d24a301468e4e5867aa99ef854603d972e8
source 02:48 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T0201Z-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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