DWIZ-AM

Present-day DWIZ began as KZPI—its last two call letters stood for Philippine Islands—a commercial radio station being established in 1946Citations:

• {{cite journal |url=http://www.asj.upd.edu.ph/mediabox/archive/ASJ-06-01-1968/lent-philippine-radio-history-problems.pdf |title=Philippine Radio – History and Problems |last=Lent |first=John |date=1968 |website=University of the Philippines Diliman |publisher=Asian Studies – Journal of Critical Perspectives on Asia |access-date=May 5, 2017 |archive-url=https://web.archive.org/web/20180417164426/http://www.asj.upd.edu.ph/mediabox/archive/ASJ-06-01-1968/lent-philippine-radio-history-problems.pdf |archive-date=April 17, 2018}}
• {{cite book |date=1968 |title=Asian Studies: Vol. 6 |url=https://books.google.com/books?id=_GibeOfXeiEC |location= |publisher=University of the Philippines Asian Center |page=42 |isbn= |access-date=August 26, 2020 |via=Google Books}} by the Philippine Broadcasting Corporation (PBC) through the Soriano family, along with magazine chain owner Ramon Roces, as a post-war extension of the company's predecessor, Far Eastern Broadcasting Company.{{efn|Far Eastern Broadcasting Corporation in another source. Not to be confused with Far East Broadcasting Company–Philippines, a currently-operating non-commercial Christian broadcast network.}} FEBC had operated KZRM and KZRF (originally KZEG) until the beginning of the Japanese invasion of the Philippines in late 1941. KZPI was incorporated on June 4, and commenced a test broadcast on July 1—the same day KZRH resumed its broadcast.

Its first, small studio was located in the 5th Floor of the Filipinas Building at Plaza Moraga in Manila; its transmitter in Polo, Bulacan. The transmitting equipment was supplied by American company Raytheon Production Corporation. It broadcast at 800 kilocycles (kHz) in long wave, and had a 1-kilowatt power. Its operations were then financed by American-controlled Philippine Operations, Inc. Its first managing director was Norman Paige, an American radio veteran and former Pacific war correspondent for the Columbia Broadcasting System.

The equipment were yet to be fully set up by July 4 when it was among the three stations to cover the inaugural ceremonies for the formal declaration of independence from the United States at the Luneta Park, and for Manuel Roxas as the first president of the new Republic.

Daily programming in its first year consisted of eight quarter-hour newscasts, dance music programs from the Manila Hotel and El Cairo Night Club, and some which were aired remotely.{{cite news |last=Shaffer |first=Ernest |date=January 1947 |title=Commercial Radio Broadcasting in the Republic of the Philippines |url=https://books.google.com/books?id=cicoAAAAMAAJ&dq=kzrm+kzrf+kzpi&pg=RA1-PA2 |work=Industrial Reference Service (volume 5—part 1, number 2) |location=Washington, D.C. |access-date=July 29, 2024 |publisher=United States Department of Commerce |pages=1–5 |via=Google Books}}

Its sister stations, mediumwave and shortwave KZOK, were established in 1947; their transmitters were then located in Quezon City. KZOK would be relaunched in 1949 as DZAB–DZH5.{{cite news |date=March 7, 1949 |title=New Broadcast Station Opened in Philippines |url=https://books.google.com/books?id=WwLHztBPBfMC&dq=dzab+manila&pg=RA11-PA39 |work=Foreign Commerce Weekly |location=Washington, D.C. |publisher=United States Department of Commerce |access-date=July 30, 2024 |page=39 |via=Google Books}}{{efn|In 1951, the stations were taken over by the Catholic-run University of Santo Tomas, and their facilities were later transferred; DZAB was rebranded as DZST. The mediumwave station is currently operated as Veritas 846; while the shortwave, as Radio Veritas Asia, ceased its broadcast in 2018.{{cite web |url=https://www.ontheshortwaves.com/Wavescan/wavescan180701.html |title=Radio Veritas Asia on Shortwave |date=July 1, 2018 |website=Wavescan |publisher=ontheshortwaves.com |access-date=July 30, 2024}}}} PBC also had another station in Cebu.

Following the 1947 International Radio Conference by the International Telecommunication Union in the United States where it was decided for the Philippine stations to replace the initial call letter with "D", which would be effective in 1949,{{cite book |last=Enriquez |first=Elizabeth |date=2008 |title=Appropriation of Colonial Broadcasting: A History of Early Radio in the Philippines, 1922–1946 |url=https://books.google.com/books?id=jxD1npoXeDoC&dq=kzrm+kzrf+kzpi&pg=PR5 |location=Quezon City, Philippines |publisher=University of the Philippines Press |page= |isbn=978-971-542-548-3 |access-date=July 29, 2024 |via=Google Books}} KZPI was renamed DZPI.{{cite web |url=https://tomas.ust.edu.ph/wp-content/uploads/2021/08/04-Pagtatatag-ng-Tradisyon-at-Kumbensiyon-Ang-Soap-Opera-sa-Radio-1922-1963.pdf |title=Pagtatatag ng Tradisyon at Kumbensiyon: Ang Soap Opera sa Radyo, 1922–1963 |last=Sanchez |first=Louie Jon |date=2019 |website=University of Santo Tomas |publisher=Tomás |access-date=July 29, 2024 |language=tl}}

Later that year, the Manila Broadcasting Company (now known as MBC Media Group) and the PBC made what was said the country's strongest merging of broadcast companies; thus DZPI served as a sister station of DZRH and DZMB.

By mid-1972, the station, being rebranded as Radio Philippines, had been transferred to Navotas, Rizal; its power had been increased to 5 kW.{{cite book |date=July 1, 1972 |title=Broadcasting Stations in the World; Part I: Amplitude Modulation Broadcasting Stations |url=https://www.worldradiohistory.com/Archive-FBIS/1972/FBIS-1972-P1.pdf |location=Washington, D.C. |publisher=Foreign Broadcast Information Service |page=187 |isbn= |access-date=July 30, 2024 |via=World Radio History}} DZPI was able to report the arrest of several political leaders following President Ferdinand Marcos' declaration of martial law on September 21, 1972, which would be announced two days later. At that moment, the station was silent the whole day.{{cite web |url=https://pmcarchive.aut.ac.nz/pacific-media-watch/philippines-crispin-maslog-remembering-martial-law-courageous-journalism.html |title=Philippines: Crispin Maslog: Remembering Martial Law – courageous journalism lessons |last=Maslog |first=Crispin |date=September 21, 2020 |website=Pacific Media Centre |publisher=Auckland University of Technology |access-date=July 30, 2024}}

On September 24, 1972, DZPI was rebranded as DWIZ Sunshine City. As one of the stations established during the Martial Law, it was then one of the most influential Top 40 music stations in Metro Manila. In November 1978, the station was transferred to 882 kHz due to the adoption of the 9 kHz spacing for medium wave stations as stipulated by the Geneva Frequency Plan of 1975 (aka GE75) supplanting the NARBA-mandated 10 kHz spacing rule. At that time, it had a 50-kW power.{{cite book |date=1979 |title=Philippine Yearbook 1979 |url=https://books.google.com/books?id=Mv4qAAAAIAAJ&dq=dwiz+1972&pg=PA810 |location=Manila, Philippines |publisher=National Economic and Development Authority; National Census and Statistics Office |page=810 |isbn= |access-date=July 30, 2024 |via=Google Books}} In 1986, it shifted to a full service format with emphasis on news and music. DWIZ Sunshine City signed off for the last time on the first quarter of 1991.{{cite book|url=https://books.google.com/books?id=xYILAQAAMAAJ|last=Aniceto|first=Ben|title=Stay Tuned: The Golden Years of Philippine Radio|pages=76, 510|date=2007|publisher=University of Michigan Press|isbn=9789719401407|access-date=August 26, 2020|via=Google Books}}

In 1991, Aliw Broadcasting Corporation, a then-newly established broadcast network owned by Antonio Cabangon Chua, acquired DWIZ.{{cite news |last1=Sallan |first1=Edwin P. |last2=Bonotan |first2=Trixzy Leigh |title=DWIZ revamps news programming, more changes happening within '23 |url=https://businessmirror.com.ph/2023/01/30/dwiz-revamps-news-programming-more-changes-happening-within-23/ |newspaper=BusinessMirror |access-date=20 February 2024 |date=30 January 2023}} The station, whose headquarters had been moved to Makati, began its test broadcast on May 12 through a 25-kW transmitter, and was relaunched on June 6 with its tagline "Boses Pilipino, Radyo ng Tao";{{efn|Translated by sources as Voice of the Filipino People's Radio.Citations (tagline):

• {{cite book |date=1992 |title=Daily Report: East Asia |url=https://books.google.com/books?id=31JceH0BQd0C |location=United States |publisher=Foreign Broadcast Information Service |page= |isbn= |access-date=August 3, 2024 |via=Google Books}}
• {{cite book |date=1993 |title=Summary of World Broadcasts: Asia–Pacific |url=https://books.google.com/books?id=KMkqAAAAMAAJ |location=United Kingdom |publisher=British Broadcasting Corporation |page= |isbn= |access-date=August 3, 2024 |via=Google Books}}}}{{cite news |last=Jurado |first=Emil |date=May 23, 1991 |title=[Notes] |url=https://books.google.com/books?id=dKAVAAAAIBAJ&dq=dwiz+1991&pg=PA39&article_id=4222,3582551 |newspaper=Manila Standard |location= |access-date=August 2, 2024 |page=10 |via=Google Books}} being reformatted as a news, talk, and public service station. It pioneered the Broadcast Tandem System, wherein a pair of broadcasters on board man the station's newscasts. Its first major news coverages were the country's annual Independence Day celebrations and the eruption of Mount Pinatubo.[http://businessmirror.com.ph/index.php/en/news/opinion/31950-aliw-broadcasting-corp-23-years-of-public-service Aliw Broadcasting Corp.: 23 years of public service]{{webarchive |url=https://web.archive.org/web/20140512215403/http://businessmirror.com.ph/index.php/en/news/opinion/31950-aliw-broadcasting-corp-23-years-of-public-service |date=May 12, 2014 }}

Leading the station's first years of broadcast are some of the anchors and reporters from DZRH; among them is Rey Langit, who served as its station manager from its first year until 2016, when he left the station. In 1994, the station increased its power from 25,000 watts to 50,000 watts. As one of the few stations in the market authorized to operate with such power, it carries the tagline Todong Lakas.

In 2000, DWIZ relocated their studio from Dominga Building, Pasong Tamo, Makati (home of Aliw's sister companies BusinessMirror and Pilipino Mirror) to their current home in Citystate Centre in Shaw Boulevard, Pasig.{{cite news |date=July 6, 1999 |title=In Makati, one hectare is a lot of land |url=https://books.google.com/books?id=jmYVAAAAIBAJ&dq=dwiz+2000&pg=PA57&article_id=4919,618629 |newspaper=Manila Standard |location= |access-date=August 3, 2024 |page=5 |via=Google Books}}

In 2003, an agreement was made by the Aliw Broadcasting Corporation and the Kabayan Radio and News Club, which had a live radio service Kabayan Radio; the latter aired DWIZ programs to reach Filipino migrant workers in Taiwan, Hong Kong, and Macau.{{cite news |date=February 19, 2003 |title=DWIZ now broadcasts in Taiwan, Hong Kong, Macau |url=https://books.google.com/books?id=jJUVAAAAIBAJ&dq=dwiz+now+under+aliw+broadcasting&pg=PA19&article_id=6418,1994888 |newspaper=Manila Standard |location= |access-date=August 2, 2024 |page=19 |via=Google Books}}

In 2005, DWIZ launched Karambola, a morning political commentary program featuring a panel of journalists and columnists led by Jonathan De la Cruz.{{cite news|url=https://businessmirror.com.ph/2019/07/11/karambola-merges-social-traditional-media/|title='Karambola' merges social, traditional media|website=BusinessMirror|date=July 11, 2019}} Karambola is now one of the station's longest-running programs.

On January 3, 2014, DWIZ signed a 3-year memorandum of agreement with Radio Philippines Network (owner of CNN Philippines-affiliated stations and Radyo Ronda) for the expanded coverage of both the TV and radio networks nationwide. Selected programs of this station are also simulcasted on the Radyo Ronda Network.[http://www.solarnews.ph/news/business/2014/01/03/rpn-aliw-tie-up-to-broaden-broadcasting-reach#.Usbr_s5orDc RPN-Aliw tie-up to broaden broadcasting reach] {{webarchive |url=https://web.archive.org/web/20140103201541/http://www.solarnews.ph/news/business/2014/01/03/rpn-aliw-tie-up-to-broaden-broadcasting-reach#.Usbr_s5orDc |date=January 3, 2014 }} DWIZ also launched its first ever radio jingle on July 14, 2014, a couple of days before Typhoon Glenda (Rammasun) wreaked havoc over Metro Manila.

In 2016, DWIZ officially upgraded its newly improved 50,000-watt transmitter system standing on a 300-foot tower, providing improved signal reception in the Greater Luzon Area.

On January 30, 2023, DWIZ underwent some programming changes to serve a wider audience. This comes along with the reformat of Home Radio provincial stations to a news and talk station under the DWIZ branding.{{cite web|url=https://pilipinomirror.com/nagbabalita-ng-tama-naglilingkod-ng-tama-pagbabago-sa-dwiz-kaabang-abang/|last1=Celario|first1=Eunice|last2=Cambri|first2=Susan|title=Pagbabago sa DWIZ Kaabang-abang|website=Filipino Mirror|date=January 30, 2023|access-date=January 30, 2023}}

File:Manila_South_Cemetery_San_Andres_(Metro_Manila;_2023-08-18)_E911a_01.jpg]]

{{Main|Aliw Channel 23}}

On May 6, 2022, DWIZ started its TeleRadyo feed on digital TV via Channel 23 (527.143 MHz).{{cite web|url=https://news.abs-cbn.com/business/01/26/22/ntc-allows-aliw-broadcasting-to-use-channel-23|title=NTC allows DWIZ operator Aliw Broadcasting to use Channel 23|first=|last=|work=ABS-CBN News|date=January 26, 2022|access-date=January 28, 2022}} The channel was awarded by the National Telecommunications Commission to Aliw last January 5.{{cite news |last1=De Guzman |first1=Warren |title=NTC allows DWIZ operator Aliw Broadcasting to use Channel 23 |url=https://news.abs-cbn.com/business/01/26/22/ntc-allows-aliw-broadcasting-to-use-channel-23 |access-date=January 26, 2022 |work=ABS-CBN News |date=January 26, 2022}}

On August 10, 2022, the channel started carrying the brand IZTV, with the tagline The News Company. It was officially launched on November 18. On January 30, 2023, the channel rebranded as ALIW Channel 23, coinciding with the reformatting of Home Radio's provincial stations under the DWIZ network.

Recently, the TeleRadyo feed was spun off to a new subchannel under the DWIZ News TV branding. Though several programs are currently aired on Aliw Channel 23.

The year 2014 and 2015 served as milestone for the station as it received several recognitions:

• Best Radio Documentary (Siyasat: "Damo") 23rd KBP Golden Dove Awards 2015
• The "Most Outstanding Radio Station of the Year" awarded by the Rotary Club of Manila Journalism Awards,
• The "Best Magazine Program" awarded to "Siyasat" by the KBP Golden Dove Awards,
• Citation in the "Best AM Radio Station" category in the KBP Golden Dove Awards
• Best Station Radio Category by the Universal Peace Federation
• Gawad Ulat for Most Supportive Radio Station by the Department of Social Welfare and Development

• Larry Gadon
• Evangeline Pascual
• Ferdinand Topacio
• Roberto Pagdanganan
• Jarius Bondoc

• Rey Langit
• Ernesto Maceda
• Juan Flavier
• Gregorio Honasan
• Salvador Escudero
• Ramon Tulfo
• Claire dela Fuente
• Roy Señeres
• Rolly Gonzalo
• Arnold Clavio
• Imee Marcos
• Mocha Uson
• Dong Puno
• Teodoro Locsin Jr.
• Jesus Crispin “Boying” Remulla
• Percy Lapid
• Alex Santos
• Gani Oro
• Trixie Cruz-Angeles
• Francis Tolentino

{{Notelist}}

{{Reflist}}

• {{Official website|http://www.dwiz882am.com/}}

{{Metro Manila Radio}}

{{Radio in the Philippines}}

{{AM Stereo radio stations}}

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Category:Aliw Broadcasting Corporation

DWIZ

Category:News and talk radio stations in the Philippines

Category:Radio stations established in 1949

{{coord missing|Metro Manila}}