Update regarding the UNID station found on 11000 kHz
The message which the UNID station found on 11MHz sent, was:
GR35
NO125
MESSAGE
KLPAS BDMGC SPADM SPILB KADCC SBAPP OCMZO PADZZ SPAIK CISBK
QUVAD APCNS SBAAA NOZII KKQUS CAPAA NBOKF EPFFZ PACCM SBADN
KLPAS NNCOM SIKSF PCPIF MKQZF SQUFB SIMCD SPPGC MSNQU ZOIKF
CEPQU VIIOA FFEKS NZPAC LOPSS
It is a short message for giving trustworthy analysis results. But it doesn't seem too "random". And there are only 19 out of the 26 letters of the Latin alphabet.
The same station reappeared on 10400 kHz, between roughly 1400z - 1600z with the same message, and occasionally classical music . Also, I heard some OM talking (not sure for the language). Unfortunately I don't have any sound samples.
To be honest, I think this is a hoax. But I'll give it a try whenever I have free time, just for the fun of it!