Philippine_Radio_Timeline from 1920s upto recent

Timeline of the Philippine Radio History

1. Timeline of Philippine Radio History Based on the provided lesson content

2. 📻 Philippine Radio Timeline 1922 – Mrs. Redgrave conducts first test broadcast at Nichols Field. Henry Herman Sr. makes test broadcasts from 3 stations. 1924 – Herman establishes KZKZ with a 100-watt transmitter (later sold to RCP). 1929 – RCP puts up KZRC Cebu, first station outside Manila (later DYRC). 1931 – Radio Control Law creates the Radio Control Board. 1933 – KZMB and KZRH begin operations, following American format. 1935 – Pres. Quezon’s inauguration broadcast on KZRM. 1940s – WWII: KZSO submarine station; KZRH continues under censorship. 1946 – KZSO (KZFM) turned over to PH gov’t; MBC acquires KZRM & KZRH (later DZMB & DZRH). 1947 – Francisco 'Koko' Trinidad lobbies for 'RP' call letters; PH assigned 'D'. 1952 – All PH radio stations adopt 'D' call letters (DZ, DY, DX, DW). 1972 – Martial Law: most independent stations closed. 1986 – EDSA People Power: Radio Veritas crucial; DZRH detailed coverage; ABS-CBN re-launches DZMM. 2000s – Radio remains free, portable, accessible despite digital media. Present – NTC reports 1,600+ AM/FM stations; plus pirate & online broadcasts.