NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

5000 kHz AM · 2026-09-23 07:59:21Z · 10:00 · received at Tellico Plains, TN USA

Spectrogram of WWV time signal, 5000 kHz AM, 2026-09-23 07:59:21Z, 10:00: keyed-tone 90% · carrier 10% · tone 270 Hz · keying 1.00 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 9.7 MB ⤓ Opus 2412 kB { }
What was heard
keyed-tone 90% · carrier 10% · tone 270 Hz · keying 1.00 Hz depth 0.97 — dominant tone 270 Hz, keyed at 1.0 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 35 dB — thanks to the operator. Receivers
Provenance
sha256 3e456eea883b044bc5639ec47b310de079fc10435070b4d2b4b7b61bbfe2c80b
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T0759Z-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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