Japanese Slot Machine (XSL)

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Japanese Slot Machine (XSL)
XSL idle.jpg
Frequencies 4.1525 MHz,4.231 MHz,4.2905 MHz,6.2495 MHz,6.4165 MHz,6.4445 MHz,8.3125 MHz,8.5875 MHz,8.703 MHz
Frequency Range 4.1525 MHz - 8.703 MHz
Mode USB
Modulation PSK
ACF
Bandwidth 2 kHz
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]