A few guys and I on an IRC were wondering around the SW, when someone came across a sound. 24535 khz. It was 3 tones.
I'm GUESSING it's XSL (Enigma2ks "Slot Machine" from Japan's Navy) but he's not so sure.
I'm providing a zip file of an original recording, an edited recording (to remove some noise), and a spectrograph of the edited (also below). Any other thoughts?
http://www.mediafire.com/?mofarvoonosn2xq