NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-09-20 19:26:31Z · 10:00 · received at Brettnach F57320

Spectrogram of WWV time signal, 10000 kHz AM, 2026-09-20 19:26:31Z, 10:00: keyed-tone 67% · morse 33% · tone 3999 Hz · keying 0.30 Hz depth 0.90
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.7 MB ⤓ Opus 2639 kB { }
What was heard
keyed-tone 67% · morse 33% · tone 3999 Hz · keying 0.30 Hz depth 0.90 — dominant tone 3999 Hz, keyed at 0.3 Hz (depth 0.9). 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 a794066c7c17546290b38b734c4ee82db7501e4064dcd5744d132cd2d19c11ea
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-20T1926Z-10000-wwv-10000
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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