After the test broadcast that was started in March 2010 and launched on election day over the internet, May 10, 2010, The Inquirer Group acquired the block time of DWRT-AM 990 kHz and changed its call sign to DZIQ, branded as Radyo INQUIRER. Ciro Songco was the first station manager of Radio Inquirer during the early years. The station's format and content were the same as the Philippine Daily Inquirer newspaper and online version. On August 16, 2010, Radyo Inquirer started transmissions on terrestrial radio by switching from an old 10,000 watt transmitter in Sta. Maria, Bulacan to its newly acquired 50,000-watt AM transmitter imported from Canada, and its official launch was on September 9, 2010. As Radyo Inquirer gained listenership, the Inquirer Group subsequently purchased Trans-Radio Broadcasting Corporation, making it the PDI's official broadcast arm. In 2013, it underwent into experimenting the use of English language in all of the programs of the station, similar to the current format of DZRJ 810 AM: The Voice of the Philippines. The move was abandoned after about a year.
Revitalization
In May–June 2015, it went into massive programming changes together with the consolidation of Inquirer platforms, after the appointment of former ABS-CBN News veteran Jake Maderazo as Station Manager and Arlyn dela Cruz as the station's News Manager by the president of TRBC, Paolo Prieto, following the new tagline, "Bayang Nagtatanong, Mamamayang Naguusisa". Tarpaulins signifying the rebirth of Radyo Inquirer was placed in different locations, while the "Balita sa Kalsada" news service showed in the LED walls across Mega Manila from time to time. In July 2015, radyo.INQUIRER.net was launched, its owned news site showcased articles in Tagalog language as reported by Radyo Inquirer reporters and columns from the anchors including Den Macaranas, Ira Panganiban, Brenda Domato, Jake Maderazo and Arlyn Dela Cruz. Radyo INQUIRER also partnered with the Voice of the Youth, sending their youth volunteers, to beef up the reportorial team that will deliver credible and extensive news coverage, in time for the 2016 elections. Its programming consists of newscasts airing at 7 am, noon, 5 pm and 10 pm, hourly news updates and up-to-date news coverage and different programs including public affairs, public service, children's, entertainment, lifestyle, religious, sports and youth-oriented programs cater to the audience and partnerships with COMELEC, NEDA, GSIS, SSS, Metropolitan Manila Development Authority, MTRCB, Ayala Corporation, Metro Pacific Investments Corporation, San Miguel Corporation, Philhealth and DOST, to name a few. Radyo Inquirer celebrated their 5th anniversary on September 9, 2015 at the Resorts World Manila. In March 2016, Radyo Inquirer launched their smartphone application. In May 2016, the "TeleRadyo"-formatted videostreaming channel of Radyo Inquirer began its broadcast via BEAM TV's digital subchannel, coinciding with the 2016 Philippine elections. In April 2018, the station gradually phased out the Radyo Inquirer brand after 8 years of usage. In August 2018, the station launched its first station ID anthem Bayang Nagtatanong, Mamamayang Nag-uusisa. The lyrics of the anthem was composed by the station's news director Arlyn Dela Cruz and performed by the band Por Da Lab. Radyo Inquirer also got two new slogans namely, "Balanseng Pagbabalita, Walang Takot na Pamamahayag " and "Bayang Nagtatanong, Mamamayang Nag-uusisa!"
