NIL HEARDRECEPTION LOG

XSL "Japanese Slot Machine"

tier B · data

6250 kHz USB · 2026-09-24 21:01:19Z · 02:56 · received at Dae_Gu City, South Korea

Spectrogram of XSL "Japanese Slot Machine", 6250 kHz USB, 2026-09-24 21:01:19Z, 02:56: data 67% · morse 33% · tone 1157 Hz · keying 10.71 Hz depth 0.93
spectrogram 0–6.0 kHz · analysis blocks: morse data
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.2 MB ⤓ Opus 737 kB { }
What was heard
data 67% · morse 33% · tone 1157 Hz · keying 10.71 Hz depth 0.93 — dominant tone 1157 Hz, keyed at 10.71 Hz (depth 0.93). 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 35 dB — thanks to the operator. Receivers
Provenance
sha256 d5f428349cf811cd97a5b322a2bcba9e4ac7ce8af14cafa5f8f20dd2992800b0
source 02:56 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-24T2101Z-6250-xsl-6250
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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