Then came the magnitude 7.6 earthquake in Casiguran ( in which Manila was severely affected by that quake ) . This strong earthquake lead to the collapse of the Ruby Tower in the capital 's downtown districts . This was the second major news event as a progenitor to the current Radyo Patrol , and this time DZAQ took on the mammoth task of informing the nation live as it happened . The Radyo Patrol Ruby Tower project was then handled by former DZAQ station manager Orly Mercado and veteran broadcaster Joe Taruc while the first reporters assigned as Radyo Patrol reporters were Mercado , Jun Ricafrente , Mario Garcia , Chris Daluz and Ismael Reyes . The marathon radio-TV simulcast of a major coverage , the first of its kind by a Philippine media firm , was a success , and the Radyo Patrol format later became an integral part of DZAQ 's broadcasts , with the station 's field reporters being assigned to cover breaking news stories and then calling the station to convey these stories as they happened . Encouraged by the success of the field reports of breaking news stories in the Greater Manila Area and beyond , DZAQ was later that year converted into a 24-hour news and commentary station by orders of the corporation management , covering many national events of great importance to listeners , as DZXL took over its entertainment and music programming . At the same time , the original team of 5 field reporters was later expanded to include both young announcers ( like Rey Langit ) and industry news veterans . By 1971 , the success of the Radyo Patrol format in Metro Manila had led to select ABS-CBN provincial radio stations establishing Radyo Patrol news services within their areas
magnitude 7.6 earthquake in Casiguran
1968 Casiguran earthquake
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