Nickname: The Japanese Slot Machine
Emission Mode: USB
Frequencies: 4231.5 kHz, 4291 kHz, 6417 kHz, 6445.1 kHz, 8588 kHz, and 8704 kHz
XSL is a Japanese military station that transmits data in the form of MPSK bursts (which are an advanced form of RTTY) and operates 24/7 on several different frequencies (common frequencies shown above). XSL is strongly believed to be a digital communications system used by the Japanese Navy.
[Recording and Waterfall View via Token]