HFU HF Underground
Loggings => Utility => Topic started by: Skipmuck on November 18, 2017, 2132 UTC
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First time I've heard this! Very distinctive almost musical sound. I looked it up online and apparently it's distinctive enough to have been dubbed the "Japanese Slot Machine" 8) Apparently it's actually a simplex system known as "Enigma Designation XSL" and is used by the Japanese Maritime Self-Defense Force. Always something interesting to find on the shortwave bands!
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I hear this frequently early mornings at 6250. It's not always on but it was yesterday morning.
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You can attempt to "decode" slot machines (as well as other signals common to hf) with this nifty app;
http://www.saharlow.com/technology/sigmira/
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I hear this frequently early mornings at 6250. It's not always on but it was yesterday morning.
You may not always hear it, but I have never seen a time it was not on. Anytime I have ever looked for it I could find it using Asian remotes. And locally I hear it every morning, on multiple frequencies.
T!
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The Slot Machine is also on 8.313MHz here as well as 6.445MHz.
A fellow I chatted with on another DX page supplied the following a couple of years or so back:
Operated by Japanese Maritime Self Defence Force, located at Ichihara, Japan with QPSK at 1,500Bd to transmitter.
They have been around for quite awhile now. I use them as an Asian propagation indicator.