Radio ERISAT on 11690 kHz via MGB Talata Volonondry, December 5

MADAGASCAR(non)   Good signal of Radio ERISAT on 11690 kHz via Talata Volonondry, December 5
1800-1900 on 11690 MDC 250 kW / 340 deg to EaAf Tigrinya via SDR Heimiswil, Switzerland, BUT 
1730-1800 on 11705 MDC 250 kW / 340 deg to EaAf Tigrinya Radio Mazaris Sumay, IS NOT ON AIR!
https://www.youtube.com/watch?v=KZeJoSUZXgc&feature=youtu.be