NIL HEARDRECEPTION LOG

UM04 unidentified Chinese morse, 07:00 sharp

tier B · mixed

4734.2 kHz USB · 2026-09-21 07:00:09Z · 06:32 · received at Dae_Gu City, South Korea

Spectrogram of UM04 unidentified Chinese morse, 07:00 sharp, 4734.2 kHz USB, 2026-09-21 07:00:09Z, 06:32: mixed 100%
spectrogram 0–6.0 kHz · analysis blocks: mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 7.2 MB ⤓ Opus 1614 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, Dae_Gu City, South Korea (PM45HV01) · 2m Collinear Antenna | 6m: 6-ele Yagi + 5/8 GP Antennas | HF: 85m Loop Antenna, 150m from ground · reported SNR 29 dB — thanks to the operator. Receivers
Provenance
sha256 c48ccc782742669de3714d3ba0fac19e9ebe3c9efa85167283c499b94de0528c
source 06:32 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-21T0700Z-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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