NIL HEARDRECEPTION LOG

WWVH time signal

tier A · carrier

15000 kHz AM · 2026-10-03 19:44:47Z · 05:00 · received at Maui, Hawaii, USA

Spectrogram of WWVH time signal, 15000 kHz AM, 2026-10-03 19:44:47Z, 05:00: carrier 73% · noise 13% · data 7% · keyed-tone 7% · tone 120 Hz · keying 0.20 Hz depth 0.86
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data carrier noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.6 MB ⤓ Opus 1116 kB { }
What was heard
carrier 73% · noise 13% · data 7% · keyed-tone 7% · tone 120 Hz · keying 0.20 Hz depth 0.86 — dominant tone 120 Hz, keyed at 0.2 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 14 dB — thanks to the operator. Receivers
Provenance
sha256 b4773d618c42707f4bc695e24a433c35f801ef4120bdad6ba98a903040dd15c0
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-03T1944Z-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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