NIL HEARDRECEPTION LOG

M89 Chinese military morse

tier B · mixed

6839.2 kHz USB · 2026-09-26 11:17:41Z · 10:00 · received at Matsukawa, Fukushima JAPAN

Spectrogram of M89 Chinese military morse, 6839.2 kHz USB, 2026-09-26 11:17:41Z, 10:00: mixed 47% · morse 47% · keyed-tone 3% · carrier 3% · tone 808 Hz · keying 1.15 Hz depth 0.97
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 10.5 MB ⤓ Opus 2613 kB { }
What was heard
mixed 47% · morse 47% · keyed-tone 3% · carrier 3% · tone 808 Hz · keying 1.15 Hz depth 0.97 — dominant tone 808 Hz, keyed at 1.15 Hz (depth 0.97). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Matsukawa, Fukushima JAPAN (QM07FQ) · G5RV · reported SNR 35 dB — thanks to the operator. Receivers
Provenance
sha256 608ff35fcdaf0c1ca43b401a7cba6801c848b55f94a4316db8e4a8b309a53890
source 10:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-26T1117Z-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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