Japanese Slot Machine (XSL)

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Japanese Slot Machine (XSL)
XSL idle.jpg
Frequencies 4152.5 kHzKiloHertz (kHz) 10^3 Hz4,152,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
4.153 MHzMegaHertz (MHz) 10^6 Hz
,4231 kHzKiloHertz (kHz) 10^3 Hz4,231,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
4.231 MHzMegaHertz (MHz) 10^6 Hz
,4290.5 kHzKiloHertz (kHz) 10^3 Hz4,290,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
4.291 MHzMegaHertz (MHz) 10^6 Hz
,6249.5 kHzKiloHertz (kHz) 10^3 Hz6,249,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
6.25 MHzMegaHertz (MHz) 10^6 Hz
,6416.5 kHzKiloHertz (kHz) 10^3 Hz6,416,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
6.417 MHzMegaHertz (MHz) 10^6 Hz
,6444.5 kHzKiloHertz (kHz) 10^3 Hz6,444,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
6.445 MHzMegaHertz (MHz) 10^6 Hz
,8312.5 kHzKiloHertz (kHz) 10^3 Hz8,312,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
8.313 MHzMegaHertz (MHz) 10^6 Hz
,8587.5 kHzKiloHertz (kHz) 10^3 Hz8,587,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
8.588 MHzMegaHertz (MHz) 10^6 Hz
,8703 kHzKiloHertz (kHz) 10^3 Hz8,703,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
8.703 MHzMegaHertz (MHz) 10^6 Hz
4,152.5 kHzKiloHertz (kHz) 10^3 Hz
4.153 MHzMegaHertz (MHz) 10^6 Hz
8,703 kHzKiloHertz (kHz) 10^3 Hz
8.703 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 4.153 MHzMegaHertz (MHz) 10^6 Hz4,152,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
4,152.5 kHzKiloHertz (kHz) 10^3 Hz
- 8.703 MHzMegaHertz (MHz) 10^6 Hz8,703,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
8,703 kHzKiloHertz (kHz) 10^3 Hz
Mode USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables)
Modulation PSKPhase-Shift Keying
ACFAutoCorrelation Function
Bandwidth 2 kHzKiloHertz (kHz) 10^3 Hz2,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.002 MHzMegaHertz (MHz) 10^6 Hz
kHzKiloHertz (kHz) 10^3 Hz
0.002 MHzMegaHertz (MHz) 10^6 Hz
kHzKiloHertz (kHz) 10^3 Hz
0.002 MHzMegaHertz (MHz) 10^6 Hz
Location Japan
Short Description The Japanese Slot Machine (Enigma Designation XSL) is a simplex system used by the Japanese Maritime Self-Defense Force in Ichihara, Japan.
I/Q Raw Recording
Audio Sample

The Japanese Slot Machine (Enigma Designation XSL) is a simplex system used by the Japanese Maritime Self-Defense Force in Ichihara, Japan. This signal is transmitted from the Japanese Maritime Self-Defense Force Ichihara Transmitting Station (海上自衛隊市原送信所) in Ichihara, Japan. Uses QPSKQuadrature Phase-Shift Keying (2 bits per symbol) at 1500 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. to transmit. Has a very interesting and unique idling format which sounds akin to a slot machine, hence the attributed name. This modem has been active since 2001.


Samples[edit]

Idle Traffic
XSL idle.jpg
XSL tfc.jpg

Other Samples:



Frequencies[edit]

Can be usually found between 3 MHzMegaHertz (MHz) 10^6 Hz and 9 MHzMegaHertz (MHz) 10^6 Hz, sometimes heard up to 10 MHzMegaHertz (MHz) 10^6 Hz. For a list of confirmed frequencies see Mysteries of the Short Wave - Japanese Slot Machine.

Decoding Software[edit]

Hobby Level Software
  • Sigmira (Decode only, no decryption).

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]