NIL HEARDRECEPTION LOG

Empty band / atmospherics

tier A · morse

6200 kHz AM · 2026-09-23 01:18:47Z · 10:00 · received at TREMOLAT (24), FRANCE

Spectrogram of Empty band / atmospherics, 6200 kHz AM, 2026-09-23 01:18:47Z, 10:00: noise 90% · morse 10% · tone 23 Hz · keying 7.86 Hz depth 0.93
spectrogram 0–6.0 kHz · analysis blocks: morse noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 11.1 MB ⤓ Opus 2276 kB { }
What was heard
noise 90% · morse 10% · tone 23 Hz · keying 7.86 Hz depth 0.93 — dominant tone 23 Hz, keyed at 7.86 Hz (depth 0.93). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, TREMOLAT (24), FRANCE (JN04ku) · Vertical pylon isolated 11 meters (ou Mini-Whip dual FET) · reported SNR 42 dB — thanks to the operator. Receivers
Provenance
sha256 efadec93bbd9ba22ff1276740245039fbf42256b8dbcb1ae89a2562d99eed3c0
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T0118Z-6200-quiet-6200
Heard in the record
Reception Conditions Were Poor — “The Buzzer Never Stopped”
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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