NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-21 02:20:56Z · 10:00 · received at Tellico Plains, TN USA

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-21 02:20:56Z, 10:00: keyed-tone 67% · carrier 30% · data 3% · tone 501 Hz · keying 0.62 Hz depth 0.98
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.4 MB ⤓ Opus 2442 kB { }
What was heard
keyed-tone 67% · carrier 30% · data 3% · tone 501 Hz · keying 0.62 Hz depth 0.98 — dominant tone 501 Hz, keyed at 0.62 Hz (depth 0.98). 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 36 dB — thanks to the operator. Receivers
Provenance
sha256 3be74cbcc4bc3db173e2decc82f1938a6e092ffd5d5aa1814dc46ac5710c6817
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0220Z-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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