No signal of Radio Sultanate of Oman on B-18 frequencies

OMAN   No signal of Radio Sultanate of Oman on B-18 frequencies
0000-0200 on  9500 THU 100 kW / 315 deg to WeEu Arabic
0200-0300 on  9540 THU 100 kW / 220 deg to EaAf Arabic
0300-0400 on  9540 THU 100 kW / 220 deg to EaAf English
0400-1000 on 13600 THU 100 kW / 220 deg to EaAf Arabic
1400-1500 on 15140*THU 100 kW / 315 deg to WeEu English
1500-1600 on 15140*THU 100 kW / 315 deg to WeEu Arabic
1600-2200 on 15140*THU 100 kW / 315 deg to WeEu Arabic
2200-2400 on 11650 THU 100 kW / 315 deg to WeEu Arabic
* till 2130UTC Radio Habana Cuba is on this frequency!