NIL HEARDRECEPTION LOG

Empty band / atmospherics

tier A · morse

6200 kHz AM · 2026-09-21 01:21:22Z · 10:00 · received at Montmorillon 86500 FRANCE

Spectrogram of Empty band / atmospherics, 6200 kHz AM, 2026-09-21 01:21:22Z, 10:00: morse 77% · noise 23% · tone 6 Hz · keying 1.95 Hz depth 0.96
spectrogram 0–6.0 kHz · analysis blocks: morse noise
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 11.0 MB ⤓ Opus 2334 kB { }
What was heard
morse 77% · noise 23% · tone 6 Hz · keying 1.95 Hz depth 0.96 — dominant tone 6 Hz, keyed at 1.95 Hz (depth 0.96). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Montmorillon 86500 FRANCE (JN05ot) · Antenna Shared Apex SAL 30 array solution · reported SNR 41 dB — thanks to the operator. Receivers
Provenance
sha256 3af04f419f1fae11dbccb29e09c2c0f06ea7b501a90a41a53a9655ac0ac0b2d4
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0121Z-6200-quiet-6200
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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