"This is Radio Bulgaria's weekly DX Program for radio amateurs and short
wave fans. It is included in our one-hour broadcasts starting as follows:
Friday at 2100 UTC on 5800 and 7500 kHz beamed to West Europe, at 2300 UTC
and on Saturday at 0200 UTC on 9700 and 11700 kHz to North America, as well
as in the half-hour broadcasts on Sunday at 0630 UTC on 11600 and 13600 kHz
and at 1130 UTC on 11700 and 15700 kHz to West Europe."

http://www.bnr.bg/RadioBulgaria/Emis.../dx-15+oct.htm