NIL HEARDRECEPTION LOG

WWVH time signal

tier A · keyed-tone

15000 kHz AM · 2026-09-23 22:47:25Z · 05:00 · received at Waimea, Hawaii

Spectrogram of WWVH time signal, 15000 kHz AM, 2026-09-23 22:47:25Z, 05:00: noise 67% · keyed-tone 33% · tone 100 Hz · keying 1.00 Hz depth 0.90
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.6 MB ⤓ Opus 1119 kB { }
What was heard
noise 67% · keyed-tone 33% · tone 100 Hz · keying 1.00 Hz depth 0.90 — dominant tone 100 Hz, keyed at 1.0 Hz (depth 0.9). 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 14 dB — thanks to the operator. Receivers
Provenance
sha256 3a4c613c4b6f076fedd2129ddb33146a224d49f1078aacf9e54c3bdee02a546c
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T2247Z-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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