Frequency changes of Radio Farda on unregistered frequencies

USA(non)   Frequency changes of USAGM RFE/RL Radio Farda on unregistered frequencies
0230-0830 NF  7590 KWT 250 kW / 058 deg to WeAs Persian is unregistered, ex 7585 kHz
1530-1730 NF  7505 LAM 100 kW / 108 deg to WeAs Persian is unregistered, ex 7580 kHz
1730-1900 NF  7505 KWT 250 kW / 058 deg to WeAs Persian is unregistered, ex 7580 kHz
1900-2130 NF  7505 LAM 100 kW / 104 deg to WeAs Persian is unregistered, ex 7580 kHz
https://www.youtube.com/watch?v=urQ2zSKn7gU&feature=youtu.be
https://www.youtube.com/watch?v=b8iTWerH5rQ&feature=youtu.be
https://www.youtube.com/watch?v=pyNhXp6-gKI&feature=youtu.be