NIL HEARDRECEPTION LOG

WWVH time signal

tier A · keyed-tone

15000 kHz AM · 2026-09-23 04:47:08Z · 05:00 · received at Brettnach F57320

Spectrogram of WWVH time signal, 15000 kHz AM, 2026-09-23 04:47:08Z, 05:00: keyed-tone 47% · morse 47% · carrier 7% · tone 6 Hz · keying 5.50 Hz depth 0.98
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.8 MB ⤓ Opus 1412 kB { }
What was heard
keyed-tone 47% · morse 47% · carrier 7% · tone 6 Hz · keying 5.50 Hz depth 0.98 — dominant tone 6 Hz, keyed at 5.5 Hz (depth 0.98). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Brettnach F57320 (JN39GG) · vertical · reported SNR 42 dB — thanks to the operator. Receivers
Provenance
sha256 8f0ba5cf56dd9ffa014dd3b358103afb68885794553c0ab880a5fea9dc1752bc
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T0447Z-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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