Reception of Radio Nigeria Kaduna via TDF Issoudun, Dec.17

FRANCE(non)   Reception of Radio Nigeria Kaduna via TDF Issoudun, Dec.17
0700-0900 on 13840 ISS 150 kW / 170 deg to WeAf Hausa, very good signal,
0900-1100 on 17690 ISS 150 kW / 170 deg to WeAf Hausa, fair/good signal.
At same time 17690 KUN 500 kW / 150 deg to AUS  English CRI - NO SIGNAL!
https://www.youtube.com/watch?v=gMeCnfBilTs&feature=youtu.be
https://www.youtube.com/watch?v=orKpO3a-xco&feature=youtu.be