NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-20 11:37:24Z · 10:00 · received at Jackson TN, USA

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-20 11:37:24Z, 10:00: keyed-tone 60% · carrier 23% · noise 13% · morse 3% · tone 501 Hz · keying 0.25 Hz depth 0.88
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.4 MB ⤓ Opus 2311 kB { }
What was heard
keyed-tone 60% · carrier 23% · noise 13% · morse 3% · tone 501 Hz · keying 0.25 Hz depth 0.88 — dominant tone 501 Hz, keyed at 0.25 Hz (depth 0.88). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Jackson TN, USA (EM55qs) · Hygain 18ht 54 foot vertical ground mounted · reported SNR 32 dB — thanks to the operator. Receivers
Provenance
sha256 891f9352ee3ce35d5a14a598a20859207977e316bc259a28faec0402a5cb7731
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-20T1137Z-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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