NIL HEARDRECEPTION LOG

M23 slow morse, midday slot

tier B · mixed

7667.2 kHz USB · 2026-09-26 10:57:08Z · 09:36 · received at Heppen, Limburg, Belgium

Spectrogram of M23 slow morse, midday slot, 7667.2 kHz USB, 2026-09-26 10:57:08Z, 09:36: mixed 100%
spectrogram 0–6.0 kHz · analysis blocks: mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 8.6 MB ⤓ Opus 2155 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, Heppen, Limburg, Belgium (JO21oc) · Longwire 54m top 70m above sealevel · reported SNR 30 dB — thanks to the operator. Receivers
Provenance
sha256 9ff4ccc97aaf2137ecee54ac3f33173647b4da7aebfcccb77e68bae73028594d
source 09:36 WAV, 12000 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T1057Z-7667.2-m23-7668
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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