NIL HEARDRECEPTION LOG

XSL "Japanese Slot Machine"

tier B · data

6250 kHz USB · 2026-09-23 15:01:53Z · 03:11 · received at Dae_Gu City, South Korea

Spectrogram of XSL "Japanese Slot Machine", 6250 kHz USB, 2026-09-23 15:01:53Z, 03:11: data 50% · morse 20% · carrier 20% · keyed-tone 10% · tone 1154 Hz · keying 2.69 Hz depth 0.94
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone morse data carrier
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 3.4 MB ⤓ Opus 801 kB { }
What was heard
data 50% · morse 20% · carrier 20% · keyed-tone 10% · tone 1154 Hz · keying 2.69 Hz depth 0.94 — dominant tone 1154 Hz, keyed at 2.69 Hz (depth 0.94). 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 32 dB — thanks to the operator. Receivers
Provenance
sha256 62fef3ba654c10fd2149f819fde2287e2810cfc9abe32a9f8610a942e662a49e
source 03:11 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-23T1501Z-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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