DWBC was established in 1972 by the ACWS - United Broadcasting Network, along with sister station DWRK. In November 1978, it moved to 954 kHz from its original frequency 940 kHz, in response to the adoption of the 9 kHz spacing on AM radio stations in the Philippines under the Geneva Frequency Plan of 1975.[1]
In April 1987, it moved to its present frequency 1422 kHz. Its former frequency is currently used by DZEM.[4] In October that year, it was one of the stations closed by the National Telecommunications Commission, through the order of then-president Corazon Aquino, for a few months for airing right-wing commentary programs that were critical of Mrs. Aquino's Administration. On January 1, 1988, it returned on the air.[5]