14077- a mysterious numbers station.wav

For about a week or so now, I've been paying attention to a shortwave station based on 14077.23 kHz.
The station periodically broadcasts random-sounding 'melodies' made from sinewave tones (similar to 'creepy melody.wav').
It might be a numbers station with completely encrypted content, so I've got no idea what it is, but it is probably a numbers station of some description. Just without the readings of the phonetic alphabet or number sequences.
Try the frequency on Twente University's online radio receiver (I recorded this from there):
<a href="http://websdr.ewi.utwente.nl:8901/" rel="nofollow">http://websdr.ewi.utwente.nl:8901/</a>
Until then, stay happy, and try working out what on earth this is!
kwahmah_02
P.S: Here are all the times in this recording the melodies play! It seems to start on the '45s each time.
0:00
0:46
1:45
2:45
3:45
4:44
5:45
6:44
7:46
8:45
9:46