NIL HEARDRECEPTION LOG

M89 Chinese military morse

tier B · mixed

6839.2 kHz USB · 2026-10-03 11:19:00Z · 09:48 · received at Matsukawa, Fukushima JAPAN

Spectrogram of M89 Chinese military morse, 6839.2 kHz USB, 2026-10-03 11:19:00Z, 09:48: mixed 47% · carrier 37% · keyed-tone 10% · morse 7% · tone 808 Hz · keying 0.30 Hz depth 0.96
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse carrier mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 9.6 MB ⤓ Opus 3689 kB { }
What was heard
mixed 47% · carrier 37% · keyed-tone 10% · morse 7% · tone 808 Hz · keying 0.30 Hz depth 0.96 — dominant tone 808 Hz, keyed at 0.3 Hz (depth 0.96). 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 36 dB — thanks to the operator. Receivers
Provenance
sha256 694df7279c8c9526996c579a771f39da1f5488c4aa1d690ffe345b0781061be1
source 09:48 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-10-03T1119Z-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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