DZRH is the flagship radio station of the Manila Broadcasting Company (MBC) and the oldest privately-owned radio station in the Philippines. Established on July 15, 1939 as KZRH, it began broadcasting from the H.E. Heacock Building in Escolta, Manila. The station has played a significant role in Philippine history, covering major events like World War II, the People Power Revolution, and other pivotal moments.

Today, DZRH continues to be a leading news and information station, broadcasting nationwide via relay stations across the Philippines. Its programming includes news, public affairs shows, radio dramas, and entertainment programs. The station has expanded into television with DZRH News Television, a cable news channel that simulcasts much of its radio content.

DZRH prides itself on being "The First in the Philippines" and maintains a commitment to delivering timely news and information to Filipino listeners. The station broadcasts 24/7 and has embraced digital platforms to reach a wider audience.