NIL HEARDRECEPTION LOG

M89 Chinese military morse

tier B · mixed

6839.2 kHz USB · 2026-09-23 11:19:12Z · 10:00 · received at Osaka, Japan

Spectrogram of M89 Chinese military morse, 6839.2 kHz USB, 2026-09-23 11:19:12Z, 10:00: mixed 50% · keyed-tone 23% · carrier 17% · morse 10% · tone 791 Hz · keying 0.30 Hz depth 0.93
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.9 MB ⤓ Opus 3944 kB { }
What was heard
mixed 50% · keyed-tone 23% · carrier 17% · morse 10% · tone 791 Hz · keying 0.30 Hz depth 0.93 — dominant tone 791 Hz, keyed at 0.3 Hz (depth 0.93). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Osaka, Japan (PM74su) · ΔLOOPX(Handmade Loop Antenna Non-synchronized mode) 250m above sea level · reported SNR 29 dB — thanks to the operator. Receivers
Provenance
sha256 2bd7d577818dc0d4956245f63bcb13c48335397b5e6ff50265320fe9ae2569e0
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T1119Z-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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