NIL HEARDRECEPTION LOG

WWVH time signal

tier A · carrier

15000 kHz AM · 2026-09-22 21:44:56Z · 04:47 · received at Waimea, Hawaii

Spectrogram of WWVH time signal, 15000 kHz AM, 2026-09-22 21:44:56Z, 04:47: carrier 40% · noise 40% · keyed-tone 20% · tone 1163 Hz · keying 0.25 Hz depth 0.67
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.4 MB ⤓ Opus 1081 kB { }
What was heard
carrier 40% · noise 40% · keyed-tone 20% · tone 1163 Hz · keying 0.25 Hz depth 0.67 — dominant tone 1163 Hz, keyed at 0.25 Hz (depth 0.67). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Waimea, Hawaii (BL20da) · Tuned fan dipole · reported SNR 21 dB — thanks to the operator. Receivers
Provenance
sha256 d38ec2e50c37fcee360fd78744376fdc2ee09b22eacddf98636b484080854ef4
source 04:47 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T2144Z-15000-wwvh-15000
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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