By early 1970s, DXMB-AM, probably the second radio station both in Malaybalay[8] and in Bukidnon,[9] then at 610 kHz and with 1-kW power,[9] was being operated along Claro M. Recto Ave.; its franchise was owned by the Lopez family[8] through Eduardo Lopez & Co., and operated by Ruta Broadcasting,[10] also owned by Eduardo.[11] The station used custom-built equipment.[10]
The station became the only operating in the municipality[10][12] since Catholic-run DXBB-AM was closed by the government in 1976 yet its license had never been revoked. (The latter would be relaunched as present-day DXDB-AM in 1991).[8] Its frequency was transferred in 1978 to present-day 648 kHz.[12]
By the end of 1970s, Malaybalay-based Ruta[13] had at least six AM radio stations; the rest were located in Visayas.[a]
The patriarch later decided to sell the station as he could no longer manage it. In 1980, the station was acquired by the Radio Mindanao Network.[8] Ruta though remained as the station's sales representative by 1990.[17] The station's power was increased to 5 kW by 1990s.[13][18]
DYLL 1170 Tacloban,[15] currently inactive. Frequency is now under DYSL in Southern Leyte while callsign is now in Ilo-Ilo, both affiliated with Presidential Broadcasting Service
