Unscheduled frequency of ERT

GREECE   Unscheduled frequency of ERT on February 28:
from 1100 NF 15630, instead of 11645 // 7475 and 9420
The broadcasts has been stopped immediately at 1308UT

And again back on the air from around 1500 on Feb.28:
from 1500 on  9420 AVL 170 kW / 323 deg to WeEu Greek
from 1500 on  9935 AVL 100 kW / 285 deg to WeEu Greek
from 1500 on 15630 AVL 100 kW / 105 deg to SoAs Greek