WWV HamSCI test signal (minute 8)

tier A · keyed-tone

10000 kHz AM · 2026-10-02 04:05:58Z · 03:00 · received at Presque Isle, WI USA

Spectrogram of WWV HamSCI test signal (minute 8), 10000 kHz AM, 2026-10-02 04:05:58Z, 03:00: keyed-tone 89% · carrier 11% · tone 501 Hz · keying 0.38 Hz depth 0.88 — spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.0 MB ⤓ Opus 717 kB { }

What was heard

keyed-tone 89% · carrier 11% · tone 501 Hz · keying 0.38 Hz depth 0.88 — dominant tone 501 Hz, keyed at 0.38 Hz (depth 0.88). 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 35 dB — thanks to the operator. Receivers

Provenance

sha256 8582976c6d67c4e0f2cab5ddf63c4d3242a961b129001638618721126233742b
source 03:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-02T0405Z-10000-wwv-hamsci-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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