NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-21 08:41:36Z · 10:00 · received at Tellico Plains, TN USA

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-21 08:41:36Z, 10:00: keyed-tone 70% · noise 17% · carrier 13% · tone 501 Hz · keying 1.00 Hz depth 0.92
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.7 MB ⤓ Opus 2278 kB { }
What was heard
keyed-tone 70% · noise 17% · carrier 13% · tone 501 Hz · keying 1.00 Hz depth 0.92 — dominant tone 501 Hz, keyed at 1.0 Hz (depth 0.92). 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 35 dB — thanks to the operator. Receivers
Provenance
sha256 392c262187d3dba4d35d3d68986dd6e835c7ec5d5d503a1bea2f6d409a9bde5e
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0841Z-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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