NIL HEARDRECEPTION LOG

M23 slow morse, evening slot

tier B · mixed

4879.2 kHz USB · 2026-10-01 18:57:26Z · 02:21 · received at Assen | Netherlands

Spectrogram of M23 slow morse, evening slot, 4879.2 kHz USB, 2026-10-01 18:57:26Z, 02:21: mixed 100%
spectrogram 0–6.0 kHz · analysis blocks: mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.5 MB ⤓ Opus 600 kB { }
What was heard
mixed 100%. Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Assen | Netherlands (JO32fx) · Active Loop antenna PAHGOR (serial nr: 001) built by ► PA0EBC ◀ 👍 · reported SNR 44 dB — thanks to the operator. Receivers
Provenance
sha256 99b27f670fde079f83ef7df1b69cd102fd399cdafa38f7feacd7fc1d8e72dcdd
source 02:21 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-01T1857Z-4879.2-m23-4880
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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