NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

10000 kHz AM · 2026-10-06 20:39:38Z · 04:56 · received at Shrewsbury, Vermont, USA

Spectrogram of WWV time signal, 10000 kHz AM, 2026-10-06 20:39:38Z, 04:56: keyed-tone 67% · carrier 27% · data 7% · tone 680 Hz · keying 0.20 Hz depth 0.51
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone data carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.1 MB ⤓ Opus 1173 kB { }
What was heard
keyed-tone 67% · carrier 27% · data 7% · tone 680 Hz · keying 0.20 Hz depth 0.51 — dominant tone 680 Hz, keyed at 0.2 Hz (depth 0.51). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Shrewsbury, Vermont, USA (FN33om) · 82m (270ft) center fed doublet @ 20m (65ft) MF through HF · reported SNR 24 dB — thanks to the operator. Receivers
Provenance
sha256 ed697a7efd28af77cdce07f361db721098f8a20ecde30aaedc9e5873adb9931d
source 04:56 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-06T2039Z-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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