The first AM station owned by Trans-Radio Broadcasting Corporation was 980 kHz, which was acquired from Transit Broadcasting Corporation in 1971. Under Trans-Radio, the station became known as
DZTR - Radyo Pilipino. DZTR was a music AM station and features celebrities such as
Vilma Santos,
Tirso Cruz III,
German Moreno and others. On September 5, 1976, the station signed off to pave way for the launch of
DWRT-FM the following day.
DWWJ 980/990/DWRT-AM 990 In 1977, it was revived as DWWJ 980 featuring
Oldies/
full service. A year later, it changed to 990 kHz due to
NARBA to
GE75 conversion. It return to its old callsign DWRT-AM in 1985 and launched as
99 Rock, playing
AOR. A few years later, it shifted from rock to gospel. In 1994, it changed its format again to news & talk as
DWRT 990. Its studios were moved to
Caloocan. It aired music, public service & religious programing until it ceased broadcast in 2002. These were the years when
Super Radyo DYSS 999 Cebu aired in Metro Manila via weak signal.
Rock 990 In March 2006, the station returned on-air as
Rock 990, adopting the
Classic Rock format. At that time, the studios were relocated to Makati. Its music formula started off as an experimental program on its Cebu's sister radio station
Y101 as an inspiration by Martha Tuason, and eventually led into the decision to re-open this station. The station utilized a computer backed programming which allowed it to be
live streamed over the
Internet. Rock 990 went off air in the first week of November 2006 due to transmitter facilities.
DWRT Nueve Noventa In December 2008, the station went back on air as
Nueve Noventa (Spanish for "nine-ninety"), after a series of test broadcasts beginning October. It broadcast from 9:30 am – 5:00 pm, playing oldies, Original Pilipino Music (OPM) and love songs, accompanied by a pre-recorded stinger saying, "
Ito ang Trans-Radio Broadcasting Corporation ...
Nueve Noventa!" (This is Trans-Radio Broadcasting Corporation... Nine-Ninety!). During Christmas 2008, it aired information plugs about Christmas traditions in the Philippines, followed by Christmas songs whether local or foreign. By April 2009, it ceased broadcast temporarily and resumed briefly in July 2009 before going off-air again.
DZIQ-AM After the national elections of May 2010,
Philippine Daily Inquirer acquired the station's
blocktime and changed its
call sign to
DZIQ, branded as
Radyo Inquirer. On August 16, 2010, Radyo Inquirer went on the air on terrestrial radio and its official launch was on September 9, 2010. The Inquirer group subsequently acquired TRBC, making it as Inquirer's official broadcast arm. In July 2013, DZIQ-AM was rebranded as
Inquirer Radio, maintaining most of
Radyo Inquirer’s format with minor program changes and the use of English similar to the current format of
DZRJ 810 AM: The Voice of the Philippines. The move was abandoned after about a year and then in 2015, the station was renamed back as
Radyo Inquirer and it changed back to all-Filipino language. DZIQ silently went off the air sometime in 2020 during the
community quarantine and after its legislative franchise to operate the station had lapsed. The television counterpart followed suit at the end of 2020. The following year, Radyo Inquirer was relaunched as
Radyo Inquirer On-Line, with some of its programs migrated to digital platforms. ==See also==