NIL HEARDRECEPTION LOG

WWV HamSCI test signal (minute 8)

tier A · keyed-tone

10000 kHz AM · 2026-09-22 02:07:27Z · 02:17 · received at Tellico Plains, TN USA

Spectrogram of WWV HamSCI test signal (minute 8), 10000 kHz AM, 2026-09-22 02:07:27Z, 02:17: keyed-tone 71% · carrier 29% · tone 600 Hz · keying 1.00 Hz depth 0.97
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.1 MB ⤓ Opus 575 kB { }
What was heard
keyed-tone 71% · carrier 29% · tone 600 Hz · keying 1.00 Hz depth 0.97 — dominant tone 600 Hz, keyed at 1.0 Hz (depth 0.97). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Tellico Plains, TN USA (EM75ul) · end-fed 173' wire @ 50' · reported SNR 41 dB — thanks to the operator. Receivers
Provenance
sha256 154cf4f1d0f412961c0f2d01ffde83685ba073046cf295b9062fad3230662cde
source 02:17 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T0207Z-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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