The Presidential Broadcast Service, also known as the Bureau of Broadcast Services (PBS-BBS), traces its origins to a U.S. military radio station established during World War II by the U.S. Office of War Information. This 50-watt portable station, call sign KZSO, operated from inside a U.S. Navy submarine before accompanying soldiers from the United States Armed Forces in the Far East (USAFFE) during the invasion of Lingayen Gulf, held by the Japanese, in January 1945. After operating from makeshift Manila facilities, the station was renamed KZFM and transferred to Philippine government control in September 1946. It became DZFM in 1952 following international telecommunications protocols. The entity expanded in the 1960s with provincial stations in Baguio, Cebu, and Davao. Abolished during martial law in 1972, it was resurrected as the Bureau of Broadcast in 1973. After merging with the National Media Production Center under the Office of Media Affairs in 1980, the current Bureau of Broadcast Services structure emerged following the 1986 EDSA Revolution. It was renamed Presidential Broadcast Service in 2023.