R.Sultanate of Oman on 15140, instead of 15145 kHz November 27

OMAN   Radio Sultanate of Oman again on 15140, instead of 15145 kHz on November 27:
1000-1015 on 15140 THU 100 kW / 315 deg to WeEu NO SIGNAL/TRANSMITTER IS NOT ON AIR
1015&1300 on 15140 THU 100 kW / 315 deg to WeEu Arabic, instead of 15145 kHz, good.
from 1200 on 15140 BAU 100 kW / 130 deg to SoAm Spanish Radio Habana Cuba co-channel
Something`s always wrong at Radio Sultanate of Oman Thumrayt transmitting station!!
https://www.youtube.com/watch?v=wUwLnKOOskk&feature=youtu.be
https://www.youtube.com/watch?v=mxkNJCJpIMY&feature=youtu.be