Corporación Estatal de Radio y Televisión (CERTV, State Radio and Television Corporation) is a radio and television network operating from Santo Domingo in the Dominican Republic. It is a public television channel operated and owned by the Dominican government. Following the frequency unification of 1996, CERTV has been aired throughout the country on channel 4 (canal 4). Previously, channel 4 was broadcast in Santo Domingo and the Southern zone, channel 5 in the Northern region and channel 12 in the Southwest. History.
https://en.wikipedia.org/wiki/Corporaci%C3%B3n_Estatal_de_Radio_y_Televisi%C3%B3n