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KFZO ZONAMX99.1 logo.jpg
CityDenton, Texas
Broadcast areaFort Worth
BrandingZona MX 99.1
SloganBanda Para La Banda
Frequency99.1 MHz (also on HD Radio)
First air date1987 (as KWDC)
FormatRegional Mexican
ERP100,000 watts
HAAT356 meters (1,168 ft)
Facility ID7040
Callsign meaningK Fort Worth ZOne
Former callsignsKWDC (1987–1988)
KJZY (1988–1992)
KDZR (1992–1995)
KHCK (1995–2004)
KFZO (2004–2012)
KDXX (2012–2016)
OwnerUforia Audio Network
(Univision Radio San Francisco, Inc.)
Sister stationsKDXX, KESS-FM, KFLC, KLNO
Also part of the Univision Cluster: KUVN-TV and KSTR-TV
WebcastListen Live (via iHeartRadio)

KFZO (99.1 FM), branded as ZonaMX 99.1, is a Regional Mexican formatted radio station. This station serves the Dallas/Fort Worth metroplex, and is owned and operated by Univision Radio. The station's studios are located along the John W. Carpenter Freeway in the Stemmons Corridor of Northwest Dallas, and the transmitter is located north of Decatur.

KDXX is not licensed by the FCC to broadcast in the HD (digital hybrid) format.[1]


The station began broadcasting as KWDC on September 15, 1988, playing Jazz music. Less than a month after the station went on the air, owners Bill Mercer and Fred Graham sold it to Larry Greene, who changed the callsign to KJZY ("Jazzy 99.1"). In 1991, KJZY made an unusual move for a commercial station: they developed "Operation Jazzy" to help save the station by soliciting listener donations. Some $25,000 was raised, which was only a small portion of the needed $150,000. By December, the station went dark and was sold. In December 1992, the station went back on the air as KDZR ("Z-Rock 99.1 FM"), playing Rock music from ABC Radio Network's Z Rock satellite feed, which was based in Dallas.

It was then purchased by Marcos A. Rodriguez, and flipped to KHCK ("99.1 Kick FM"), airing Tejano music, on February 1, 1995. The station was also simulcast on 107.9 MHz.

In 2004, the station was then sold to Hispanic Broadcasting (now Univision Radio). Less than a year later, the station changed names and formats to KFZO as a Cumbia station.

The station had been branded as "La Kalle" (Spanish for "The Street") prior to February 19, 2009, when "La Que Buena" was moved from 107.9 FM (KESS-FM) and simulcasted on 107.1 FM (KFZO). The Reggaeton station known as "Radio La Kalle" was then moved to 107.9 FM and retooled its format to Latin Pop where it remained until late 2011.

In early 2011, its sister station KDXX (now KFZO) broke away from the "La Jefa" simulcast.

The station is an affiliate of the Dallas Cowboys Spanish Language Radio Network.[2]

On June 28, 2012, KFZO changed their format to Spanish AC, branded as "Máxima 99.1" and changed their call letters to KDXX.[3]

On July 29, 2013, KDXX started simulcasting on KFZO 107.1.

In September 2014, the "Máxima" branding was changed to "Latino Mix 99.1 & 107.1" and retooled to a Latin Pop format.

On February 17, 2016, Univision swapped callsigns and formats once again on 99.1 and 107.9, marking the return of the KFZO call letters to 99.1 FM. A day later, 99.1 returned to its current Regional Mexican format as "La Jefa", also marking the return of said branding to the frequency.[4] That return only lasted a year before the station rebranded as ZonaMX.


  1. ^ FCC Internet Services Staff. "Station Search Details". Licensing.fcc.gov. Retrieved 2016-06-02.
  2. ^ "Dallas Cowboys on Radio". DallasCowboys.com.
  3. ^ "Univision Launches "Radio H2O" 107.9 Dallas". 28 June 2012. Retrieved 2 June 2016.
  4. ^ La Jefa On The Move In DallasRadioInsight (published February 17, 2016)

External links[edit]

Coordinates: 33°23′24″N 97°33′54″W / 33.390°N 97.565°W / 33.390; -97.565