NIL HEARDRECEPTION LOG

WWVH time signal

tier A · morse

15000 kHz AM · 2026-09-20 20:47:10Z · 05:00 · received at Waimea, Hawaii

Spectrogram of WWVH time signal, 15000 kHz AM, 2026-09-20 20:47:10Z, 05:00: noise 80% · morse 20% · tone 1154 Hz · keying 0.45 Hz depth 0.73
spectrogram 0–6.0 kHz · analysis blocks: morse noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.6 MB ⤓ Opus 1121 kB { }
What was heard
noise 80% · morse 20% · tone 1154 Hz · keying 0.45 Hz depth 0.73 — dominant tone 1154 Hz, keyed at 0.45 Hz (depth 0.73). 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 17 dB — thanks to the operator. Receivers
Provenance
sha256 fa1fdea8ddba623c8cf9938f035b0ebd25d730d18caf9cbed73dccc01df8af9b
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-20T2047Z-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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