Alto Broadcasting System

Background
Bolinao Electronics Corporation (BEC) was founded on June 13, 1946 by an American engineer, James Lindenberg. Judge Antonio Quirino bought stocks from BEC, later gained a controlling stock and renamed the company from BEC to Alto Broadcasting System (ABS). Their first telecast was on October 23, 1953, on channel 3 (using the callsign DZAQ-TV). After the premiere telecast, DZAQ-TV followed a four-hour-a-day schedule from 6:00 pm to 10:00 pm.

On February 24, 1957, Chronicle Broadcasting Network (CBN), a rival network established by brothers Eugenio Lopez, Sr. and former Vice President Fernando Lopez, bought ABS (also reverting the corporate name to its previous one) and established another TV station (DZXL-TV 9) under the CBN brand in 1958.

(October 23, 1953-June 14?, 1961)
Logo: On a white background, the callsign "DZAQ-TV" is stacked on top of a box that reads "Channel 3", and the Alto Broadcasting System logo is displayed below the box.

Technique: None.

Audio: None.