NIL HEARDRECEPTION LOG

WWV time signal, 20 MHz (day)

tier A · keyed-tone

20000 kHz AM · 2026-09-21 14:14:14Z · 10:00 · received at Eganville, Canada

Spectrogram of WWV time signal, 20 MHz (day), 20000 kHz AM, 2026-09-21 14:14:14Z, 10:00: keyed-tone 77% · carrier 23% · tone 551 Hz · keying 0.20 Hz depth 0.99
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.0 MB ⤓ Opus 2494 kB { }
What was heard
keyed-tone 77% · carrier 23% · tone 551 Hz · keying 0.20 Hz depth 0.99 — dominant tone 551 Hz, keyed at 0.2 Hz (depth 0.99). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Eganville, Canada (FN15jl) · CHA EMCOMM III Base Antenna · reported SNR 31 dB — thanks to the operator. Receivers
Provenance
sha256 f8df697dc32d007236f1cdb98e9d046910e173cfa8350cd4b5ae33494c29be18
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T1414Z-20000-wwv-20000
Heard in the record
Reception Conditions Were Poor — “Greyline”
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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