 DZEM is also known as the most widely traveled radio station in Metro Manila as it began broadcasting in Barrio Ugong del Monte, Quezon City on 1520 kHz with a power of 10,000 watts.On June 3, 1971, it moved to the basement of the Iglesia Ni Cristo Central Office in Diliman, Quezon City.Shortly afterwards, it acquired a new frequency, 1460 kHz.