NIL HEARDRECEPTION LOG

WWVH time signal

tier A · keyed-tone

15000 kHz AM · 2026-09-21 00:44:32Z · 05:00 · received at Waimea, Hawaii

Spectrogram of WWVH time signal, 15000 kHz AM, 2026-09-21 00:44:32Z, 05:00: keyed-tone 93% · carrier 7% · tone 1184 Hz · keying 0.25 Hz depth 0.89
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.1 MB ⤓ Opus 1310 kB { }
What was heard
keyed-tone 93% · carrier 7% · tone 1184 Hz · keying 0.25 Hz depth 0.89 — dominant tone 1184 Hz, keyed at 0.25 Hz (depth 0.89). 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 13 dB — thanks to the operator. Receivers
Provenance
sha256 4018dcf9d8a1398a5c8fe72286dfa7803814bd24174a6311e4ae0915d0c8c3ce
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0044Z-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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