NIL HEARDRECEPTION LOG

WWVH time signal

tier A · keyed-tone

15000 kHz AM · 2026-10-03 01:45:20Z · 04:28 · received at Maui, Hawaii, USA

Spectrogram of WWVH time signal, 15000 kHz AM, 2026-10-03 01:45:20Z, 04:28: noise 71% · keyed-tone 29% · tone 100 Hz · keying 1.00 Hz depth 0.86
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.1 MB ⤓ Opus 1000 kB { }
What was heard
noise 71% · keyed-tone 29% · tone 100 Hz · keying 1.00 Hz depth 0.86 — dominant tone 100 Hz, keyed at 1.0 Hz (depth 0.86). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Maui, Hawaii, USA (BL10us) · Discone · reported SNR 13 dB — thanks to the operator. Receivers
Provenance
sha256 2d5ddd9a22c8f3dd2fe86e5a193b1e270b5f9b85f628c155e3dec130d2a0240b
source 04:28 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-03T0145Z-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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