The Southern Broadcasting Network (SBN) of
Davao launched SBN Channel 21, marking it as the first local UHF TV station in
Metro Manila since 1992. Initially, it was known as World TV 21 and operated by the Kampana Television Corporation. This corporation provided programming content sourced from ABC,
CNN, and
ESPN. The station's founding vision was to offer similar content to that of the
FEN Channel 17 of the former Clark US Air Base, which had been forcibly shut down a year earlier following the
Eruption of Mt. Pinatubo. A significant shift occurred on January 1, 2008, when
Solar Entertainment began leasing airtime on SBN and chose to broadcast programming from its entertainment channel,
ETC. This initial partnership concluded on March 2, 2011, as Solar transferred ETC to
RPN after the network's privatization. Consequently, SBN and Solar Entertainment renewed their collaboration to create the news network
Talk TV. The channel's identity evolved again on October 30, 2012, when it was renamed the
Solar News Channel (SNC). A subsequent major programming move took place on December 1, 2013, when SNC's programming was moved to RPN to enhance wider nationwide coverage. As a result, ETC returned to SBN the day before. Not long after, due to Solar's revenue conflicts, RPN and
Solar TV Network were sold to ALC Group of Companies on August 2014, and SNC rebranded as
9TV. In 2015, SBN upgraded its transmission infrastructure. It ceased using its old analog transmitter tower located at the Strata 2000 building in
Pasig. This move was particularly notable, as the old tower had remained in use even after Solar's purchase of SBN, a fact evident in the old sign-on and sign-off sequences. The network began utilizing Solar's newly constructed tower in Antipolo, resulting in clearer and better signal reception for both its analog and digital broadcasts. Finally, on September 12, 2019, SBN concluded its analog signal transmission, transitioning fully in favor of digital TV broadcast. == Areas of coverage ==