NIL HEARDRECEPTION LOG

WWV time signal

tier A · keyed-tone

5000 kHz AM · 2026-10-02 00:01:23Z · 03:06 · received at Shrewsbury, Vermont, USA

Spectrogram of WWV time signal, 5000 kHz AM, 2026-10-02 00:01:23Z, 03:06: keyed-tone 100% · tone 3999 Hz · keying 0.35 Hz depth 0.81
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.3 MB ⤓ Opus 724 kB { }
What was heard
keyed-tone 100% · tone 3999 Hz · keying 0.35 Hz depth 0.81 — dominant tone 3999 Hz, keyed at 0.35 Hz (depth 0.81). 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 30 dB — thanks to the operator. Receivers
Provenance
sha256 9b99ffc23af2eb04ed1f39715eedbed2c3ba14b207ab5440a4bc3cfe4f4b6193
source 03:06 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-02T0001Z-5000-wwv-5000
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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