NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

5000 kHz AM · 2026-09-20 05:30:24Z · 10:00 · received at Jackson TN, USA

Spectrogram of WWV time signal, 5000 kHz AM, 2026-09-20 05:30:24Z, 10:00: keyed-tone 53% · carrier 47% · tone 551 Hz · keying 0.20 Hz depth 0.99
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.4 MB ⤓ Opus 2504 kB { }
What was heard
keyed-tone 53% · carrier 47% · tone 551 Hz · keying 0.20 Hz depth 0.99 — dominant tone 551 Hz, keyed at 0.2 Hz (depth 0.99). 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 34 dB — thanks to the operator. Receivers
Provenance
sha256 2cf48f49bc6c8f096a715655c95755f82c29ed482d3305a11ea0da7f47ce852f
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-20T0530Z-5000-wwv-5000
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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