Strong signal of From the Isle of Music via SPL plus tx problem, May 21

SECRETLAND(non)   Strong signal of From the Isle of Music via SPL on May 21:
1500-1543 on  9400 SCB 100 kW / 030 deg to EaEu English/Spanish+2nd hx 18800
from 1543 tx problem: zero signal and then dead air and tx off ait at 1550UT 
https://www.youtube.com/watch?v=trqSoLTBfgg&feature=youtu.be
https://www.youtube.com/watch?v=chaZkMvGG3k&feature=youtu.be
https://www.youtube.com/watch?v=6jSRpbKlizI&feature=youtu.be