NIL HEARDRECEPTION LOG

WWV HamSCI test signal (minute 8)

tier A · morse

10000 kHz AM · 2026-09-24 08:05:29Z · 03:00 · received at Presque Isle, WI USA

Spectrogram of WWV HamSCI test signal (minute 8), 10000 kHz AM, 2026-09-24 08:05:29Z, 03:00: morse 67% · carrier 33% · tone 501 Hz · keying 1.73 Hz depth 0.88
spectrogram 0–6.0 kHz · analysis blocks: morse carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.1 MB ⤓ Opus 723 kB { }
What was heard
morse 67% · carrier 33% · tone 501 Hz · keying 1.73 Hz depth 0.88 — dominant tone 501 Hz, keyed at 1.73 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 33 dB — thanks to the operator. Receivers
Provenance
sha256 88e661405601c26bfe784394400deac183591e30dc94882ed23b3b76f16a34bb
source 03:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-24T0805Z-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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