D-3-ZO-TV

The station began existence in 1967 as DZRI-TV, the first television station in Northern Luzon. DZRI-TV was launched upon the merger of ABS-CBN's predecessors Alto Broadcasting System and Chronicle Broadcasting Network. The station began on VHF channel 10 with a transmitting power of 500 watts.[3] At that time, it served as a sister to former AM station DZBC, which opened in 1964.

In 1969, Channel 10 broadcast the Seven Last Words from the Baguio Cathedral to viewers in Metro Manila and Pangasinan via microwave relay. This method was done prior to the introduction of the nationwide satellite broadcast system. The first ever broadcast of this kind, it made ABS-CBN the pioneer in nationwide broadcasting.

When Martial Law was declared by then-President Ferdinand Marcos, which forced ABS-CBN to shut down under his crony, Roberto Benedicto, DZRI-TV was subsequently shut down in 1972. That became the final year of the station on the original channel 10 frequency. Eight years later, in 1980, VHF channel 10 was given to the newly launched station DZEA-TV.

While the closed network's intellectual unit was taken over by crony-owned Banahaw Broadcasting Corporation, Benedicto moved the station's VHF assignment from channel 10 to the current channel 3. Two years later, state-run Government Television (the foundation of the current People's Television Network) began broadcasting programs from Manila, as well as occasional local content, through channel 3; with the commercial BBC on its newly bought DWZM-TV channel 8, also a victim of the Marcos crackdown.

In September 1986, months after ABS-CBN was reinstated as a result of the EDSA People Power Revolution's victory the past February, the network took back DZRI-TV in its current frequency. The former BBC and GTV's successor Maharlika Broadcasting System were closed down and merged as the state-run PTV, now operating on the old BBC's channel 8 frequency.

On August 29, 1988, DZRI-TV's own variation of ABS-CBN's Star Network ident, with a gold tri-ribbon channel 3 with a gold star at the bottom tail (similar to the one used in Cebu) debuted, and with it came a new callsign: D-3-ZO-TV. Later it changed to the red, green and blue stripe. At that time, programming was scheduled differently until 1989, when channel 3 Baguio officially became a satellite relay of network flagship DWWX-TV Manila, allowing it to work at par with network programming; as well as becoming a hub for viewers in the Cordillera and Ilocos regions.

On January 27, 1992, D-3-ZO-TV was converted into an originating station in preparation for the launch of ABS-CBN's Radio/TV Regional Network division (which was renamed as the Regional Network Group in 1995).

On November 27, 1995 TV Patrol North Luzon, becomes the station's flagship newscast and its surrounding regions and for a brief period in the late 90s, it also broadcast its own original drama series.

Channel 3 Baguio since then expanded its local programming influence to the Cordillera and later to Northern and Central Luzon, culminating in 2018 with the formation of the network's North Luzon super region with channel 3 Baguio as its main playout center.

UHF Channel 30 (569.143 MHz)

Notes:

• CINEMO!, YEY!, Knowledge Channel, and DZMM Teleradyo are exclusive channels to TV Plus, a digital set-top box manufactured by the network.
• Kapamilya Box Office or KBO is accessible by texting activation on all mobile networks.

• Agri Tayo Dito
• Baguio Diaries
• Bagong Morning Kapamilya
• Dateline Northern Luzon
• Naimbag nga Morning Kapamilya
• Northern Catch: Atin 'To!
• MAG TV Na, Atin 'To!
• TV Patrol Baguio
• TV Patrol North Luzon
• TV Patrol Northern Luzon