NIL HEARDRECEPTION LOG

WWVH time signal

tier A · carrier

15000 kHz AM · 2026-09-25 05:44:35Z · 05:00 · received at Waimea, Hawaii

Spectrogram of WWVH time signal, 15000 kHz AM, 2026-09-25 05:44:35Z, 05:00: noise 40% · carrier 40% · keyed-tone 20% · tone 2675 Hz · keying 0.20 Hz depth 0.57
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.3 MB ⤓ Opus 1121 kB { }
What was heard
noise 40% · carrier 40% · keyed-tone 20% · tone 2675 Hz · keying 0.20 Hz depth 0.57 — dominant tone 2675 Hz, keyed at 0.2 Hz (depth 0.57). 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 18 dB — thanks to the operator. Receivers
Provenance
sha256 43146a066d36f198b52f87db7047dd24e6b8f5ca7f39dc383e7e4c7f1e93d322
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-25T0544Z-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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