History
1949-1991: Early beginnings as DZPI, the first iteration of DWIZ
It was then known as DZPI from 1949 to 1972, broadcasting at 800 kHz until November 1978 when it 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. DWIZ officially started its broadcast operations on September 24, 1972, as DWIZ Sunshine City, owned and operated by Manila Broadcasting Company's subsidiary, Philippine Broadcasting Corporation (and it was one of the stations established during the Martial Law for the first time, which dated 3 days from the issuance of the1991-present: The current interation of DWIZ
Upon acquisition, test broadcasts of the 25,000-watt-powered newly formatted AM station started during April 1991, and it successfully lasted for a month. The station also pioneered another first in the history, as it introduced the Broadcast Tandem System, wherein a pair of broadcasters on board are manning the station's newscasts. Leading the station's first years of broadcast are some of the anchors and reporters transferred from DZRH (one notable example is Rey Langit, who eventually became the station manager in 1991, until he resigned in 2016). The first big news coverage on DWIZ was the country's annual Independence Day celebrations in 1991, followed immediately by the eruption of Mount Pinatubo. In 1994, DWIZ officially switched to its current 50,000 watt transmitter facility. 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. In 2005, DWIZ launched '' Karambola'', a morning political commentary program featuring a panel of journalists and columnists led by Jonathan De la Cruz. ''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. 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. In 2022, DWIZ officially started its simulcast on digital TV via Channel 23 (527.143 MHz) along with the new station's callsign DWIZ-DTV. This recent development signifies the company's move to venture into television broadcasting; the channel became available on SkyCable starting November 18, 2022.Recognitions
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 DevelopmentNotable anchors
Current
* Trixie Cruz-Angeles * Larry Gadon * Evangeline Pascual * Ferdinand TopacioPast
* Arnold Clavio (now with GMA Network and DZBB) * Sen. Imee Marcos * Mocha Uson * Dong Puno (deceased) * Ramon Tulfo * Rey Langit (moved to DZRJ 810 and DZEC 1062) *References
External links
* Aliw Broadcasting Corporation