Japanese "Slot Machine"?

[datainmotion]

I caught this just before 0930z on 6445 USB (S7-S8), audio link to follow...

 

[datainmotion]

Japanese Slot Machine

 

[Token]

The slot machine is a regular, and has fairly set frequencies. Try 4153, 4231.5, 4291, 6250, 6417, 6445, 8313, 8588, and 8703.5 kHz. I am sure there are other freqs also, but those are what showed up in a quick search of the bands while I was typing this response (1150 UTC). Pretty much anytime there is a dark side path to Japan for me I hear the XSL scattered up and down the bands below 9 MHz, up until a couple of hours after sunrise..

It does make a rather distinctive pattern on the waterfall.

T!

 

[chrizby]

Mystery Signals of the Short Wave

 

[Token]

Since that article was written, and since Hugh did that extensive list of frequencies, several frequencies have been dropped or shifted.

T!

 

[MSM_Maria]

Yes, it is XSL, known as "Japanise Slot Machine", but record has a very poor quality.