[7] The Villar clan, which pioneered the country's recording business in 1950 through Mareco, opened two AM radio stations:[9] DZBM 740[10] in 1963, and DZLM 1430.
Upon the declaration of nationwide martial law in 1972, a decree was issued ordering a broadcast company to operate an AM and an FM station in each area.
[11] In early 1990s, DWBM-FM and DWOO-AM (successors of DWLM-FM and DZBM-AM, respectively),[16] along with Citylite 88.3 Metro Manila and its partner, DYBW-FM 89.1 Cebu City, became CNN radio affiliates, relaying international news reported by the outlet.
[17] In May 1993, MBNI, owned by Palma and Villar group of companies at that time, relaunched DWOO-AM as news radio station.
The transfer to the latter was the subject of a dispute when the Villar family filed a court case against Tan,[20] which caused the delay of station's scheduled official broadcast as DWWW 774 in October 1996, under new management.
Much like its previous broadcast on FM, it still carries the same programming and international news bulletins from BBC World Service and Voice of America.
In the early 1990s, Mareco underwent several changes in management and programming, which also involves relaunching in 1991 of 105.1 Manila as DWBM-FM, until the launch of Crossover network through that station in (June) 1994.