NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-10-02 03:21:39Z · 02:41 · received at Presque Isle, WI USA

Spectrogram of WWV time signal, 10000 kHz AM, 2026-10-02 03:21:39Z, 02:41: keyed-tone 89% · carrier 11% · tone 600 Hz · keying 0.45 Hz depth 0.85
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.6 MB ⤓ Opus 645 kB { }
What was heard
keyed-tone 89% · carrier 11% · tone 600 Hz · keying 0.45 Hz depth 0.85 — dominant tone 600 Hz, keyed at 0.45 Hz (depth 0.85). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Presque Isle, WI USA (EN56ef) · 85 Meter Loop > 500 - 1500 kHz Filter > MCA104M Split · reported SNR 34 dB — thanks to the operator. Receivers
Provenance
sha256 b1e3113d663fc302707224ebd22af464def9edc03bead517edd058aa69f8826e
source 02:41 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-02T0321Z-10000-wwv-10000-na
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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