DZKB-TV maintains a relay facility at the Upper Ground Floor, Worldwide Corporate Center, Shaw Boulevard corner EDSA, Mandaluyong; its analog transmitter is at the RPN Compound, #97 Panay Avenue, Brgy. South Triangle, Quezon City; and its digital transmitter is located at Crestview Heights Subdivision, Brgy. San Roque, Antipolo, Rizal, on a tower site formerly owned by Progressive Broadcasting Corporation.
History
RPN was established on June 29, 1960 when the Congress approved its franchise. The network operates on radio only and on October 15, 1969, it began operating on television. In the late 1960's, the company was acquired by Roberto Benedicto, a Marcos' crony, and changed its corporate name as Kanlaon Broadcasting System (KBS).
DZKB-TV was established when KBS acquired channel 9 frequency from Lopez family's ABS-CBN under the callsign DZXL-TV.
When former Philippine PresidentFerdinand Marcos declared martial law on September 23, 1972, ABS-CBN facilities were turned over to KBS. On July 1978, KBS then moved to Broadcast City in Capitol Hills, Diliman, Quezon City alongside two networks owned by Benedicto, IBC and BBC, respectively. In 1975, KBS changed its identity as Radio Philippines Network (RPN).
Despite conflicts on TV ratings and competition, on October 8, 1989, RPN relaunched as New Vision 9. NV9 increased its transmitter's ERP to 1 million watts, resulting in clearer and better signal reception in the Greater Luzon Area.
In 1994, NV9 reverted its name to RPN and became the second VHF television network to broadcast in full surround stereo.
On March 11, 2007, RPN started their collaboration with cable company Solar Entertainment Corporation to enhance its ratings. On January 1, 2008, RPN begin airing Solar's C/S programs on channel's lineup following carriage dispute between Solar and Sky Cable. On October 2008, RPN rebranded as C/S 9 as part of permanent branding.
On November 29, 2009, C/S 9 rebranded as Solar TV. The channel's identity was changed as ETC on March 2, 2011. This relaunch came after Solar TV Network acquired 34% stake in RPN from the Philippine Government as part of RPN/IBC privatization in 2011.
On October 30, 2012, RPN announced the axing of RPN NewsWatch and NewsCap, as Solar TV took over the entire network's airtime. More than 200 employees were retrenched, effectively dissolves RPN's news department.
On December 1, 2013, Solar News Channel replaced ETC on RPN to enhance wider nationwide coverage as ETC returned to SBN.
In the third quarter of 2014, Solar Entertainment chief Wilson Tieng announced the sale of STVNI and RPN to ALC Group of Companies due to Solar's revenue deterioration after investing in RPN. As a result, the Solar brand was dropped from SNC's programming. SNC rebranded as 9TV on August 23, 2014.
On January 25, 2024, Nine Media and CNN ended their partnership due to financial losses, poor ratings, and loss of advertiser's support. On January 29, 2024, CNN Philippines ceased its live news productions and will permanently shut down at the end of the month.
CNN Philippines rebranded as RPTV on February 1, 2024, in collaboration with RPN, Nine Media, and TV5 Network.
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