DXUM (819 kHz Davao City) "Radyo Ukay" is an AM station of UM Broadcasting Network in the Philippines. The station's studio is located along P. Reyes St., in Davao City. The main format of the station is music and news. Radyo Ukay - Radyo means radio and Ukay means to dig. To dig issues and reports and that is what Radyo Ukay is known to many as "Investigative" radio.