NIL HEARDRECEPTION LOG

UM04 unidentified Chinese morse, 07:00 sharp

tier B · mixed

4734.2 kHz USB · 2026-09-22 07:00:21Z · 06:20 · received at Chiba, Japan

Spectrogram of UM04 unidentified Chinese morse, 07:00 sharp, 4734.2 kHz USB, 2026-09-22 07:00:21Z, 06:20: mixed 100%
spectrogram 0–6.0 kHz · analysis blocks: mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 6.5 MB ⤓ Opus 2368 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, Chiba, Japan (QM05ak) · Magnetic Loop Antenna · reported SNR 25 dB — thanks to the operator. Receivers
Provenance
sha256 7cccde69d1fe67e117f95f512889b391068aa2a20ab1ec2d5bbe65de29e234f4
source 06:20 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-22T0700Z-4734.2-um04-4735
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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