WWV HamSCI test signal (minute 8)

tier A · keyed-tone

10000 kHz AM · 2026-09-23 23:05:16Z · 03:00 · received at West Mountain, Dutchess County, NY, USA

Spectrogram of WWV HamSCI test signal (minute 8), 10000 kHz AM, 2026-09-23 23:05:16Z, 03:00: keyed-tone 67% · data 11% · morse 11% · carrier 11% · tone 551 Hz · keying 0.40 Hz depth 0.97 — spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse data carrier

loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.0 MB ⤓ Opus 731 kB { }

What was heard

keyed-tone 67% · data 11% · morse 11% · carrier 11% · tone 551 Hz · keying 0.40 Hz depth 0.97 — dominant tone 551 Hz, keyed at 0.4 Hz (depth 0.97). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.

Receiver

KiwiSDR, West Mountain, Dutchess County, NY, USA (FN31eo) · Various · reported SNR 28 dB — thanks to the operator. Receivers

Provenance

sha256 77462b2ca0a4de59965e49b836c5f87c95e1c7537f47d18af2abf73425631ad7
source 03:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T2305Z-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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