NIL HEARDRECEPTION LOG

M89 Chinese military morse

tier B · mixed

6839.2 kHz USB · 2026-10-06 11:18:10Z · 02:03 · received at Chiba, Japan

Spectrogram of M89 Chinese military morse, 6839.2 kHz USB, 2026-10-06 11:18:10Z, 02:03: mixed 86% · keyed-tone 14% · tone 791 Hz · keying 0.62 Hz depth 0.90
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 2.1 MB ⤓ Opus 750 kB { }
What was heard
mixed 86% · keyed-tone 14% · tone 791 Hz · keying 0.62 Hz depth 0.90 — dominant tone 791 Hz, keyed at 0.62 Hz (depth 0.9). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Chiba, Japan (QM05cq) · EndFed · reported SNR 32 dB — thanks to the operator. Receivers
Provenance
sha256 82967304e983884cd4f4dc09dc4c339478fb3c4fcf4d0bfd8ce302f0d53bfa6e
source 02:03 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-06T1118Z-6839.2-m89-6840
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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