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KJXK (102.7 FM, "102.7 Jack FM") is a radio station in San Antonio, Texas, broadcasting an adult hits music format as a member of the "Jack FM" brand. Its studios are located in Northeast San Antonio, and the transmitter site is atop Tower of the Americas downtown.

KJXK-FM logo.png
CitySan Antonio, Texas
Broadcast areaSan Antonio metropolitan area
Branding102.7 Jack FM
SloganPlaying What We Want
Frequency102.7 MHz
First air date1969 (as KTFM)
FormatAdult hits Variety
ERP100,000 watts
HAAT202 m (663 ft)
Facility ID71086
Callsign meaningJacK FM
Former callsignsKTFM (1969-2003)
KSRX (2003-2006)
OwnerAlpha Media
(Alpha Media Licensee LLC)
WebcastListen Live


102.7 signed on in 1969 as KTFM. In 1972, KTFM was looking into a format switch to progressive rock,[1] making that change late 1972-1973. This format lasted until at least 1976, when it shifted towards album rock. In the summer of 1986, the station changed its format to a mainstream pop station that would later evolve into Rhythmic Top 40 by 1988. The station at this time was owned by Waterman Broadcasting of Texas. KTFM was the Dominant Top-40 station competing with then KSAQ Q96, which would become KXXM Mix 96, and now defunct KITY "Power 93" (92.9 FM) now Regional Mexican "Que Buena".

In 2000, the Top-40 market would be shook up by the arrival of a Move-in at the 98.5 Frequency. KBBT was launched as "The Beat", a new Hip-Hop heavy Rhythmic format which quickly climbed up in the ratings. In August 2001, KTFM would go after KBBT by changing from Mainstream Top-40 to a more Rhythmic Based Top-40 as "Wild 102-7". KBBT had the Hip Hop music audience, and KTFM started to see their ratings slide down.

With KTFM competing with Rhythmic KBBT as well as KXXM, ratings were slipping for the heritage KTFM. In March 2000, Waterman Reached a deal to sell KTFM and KTSA to Infinity Broadcasting.

Infinity also owned then-sister Top-40 KRBV "Wild 100" (now KJKK in Dallas) with the same format looking to bring down KBBT. Infinity would finally throw in the towel and drop "Wild 102-7", with KTFM reverting to mainstream Top-40 with some Rock cuts mixed in on October 24, 2000.[2] On October 24, 2003, KTFM dropped the CHR/Top 40 format after 17 years and flipped to Mainstream rock as "102.7 K-Rock"; the call letters would become KSRX. The first song on "K-Rock" was "Welcome to the Jungle" by Guns 'n' Roses.[3][4] On January 1, 2006, after a brief "Free FM" stunt, like the other stations that were to flip to Jack across the country, KSRX became "102.7 Jack FM" with the KJXK calls and adult hits format. The first song on "Jack" was "Get Ready for This" by 2 Unlimited.[5]

In August 2006, CBS Radio sold KJXK and KTSA to Houston's Border Media for $45 Million dollars. BMP Media would Revive the KTFM calls in 2005 on 94.1 FM, which has since reverted to its Legendary Top-40 format. Jack FM is San Antonio's home for the Dallas Cowboys.

The station was owned by CBS Radio formerly Infinity Broadcasting, but was sold in August 2006 to BMP Radio, who in turn sold the station to L&L Broadcasting (now Alpha Media) in May 2013.

On January 7, 2016 at 4PM, after a half-hour of "goodbye"-themed songs (ending with "Someone like You" by Adele), 102.7 briefly stunted with country music, keeping the Jack-FM name, but including barnyard sounds in their bumpers and branding their Facebook page as "102.7 Yeehaw FM". As 94.1 was stunting at the same time, this led listeners to believe KTFM was moving back to 102.7; however, at 5PM, Jack returned, and the country music was revealed to be a publicity stunt.[6] Since Alpha has taken over 102.7 Jack Fm the audio feed is Dial Global Stor Q version of Jack the same version the smaller Jack Affiliates use.

Former KTFM air personalitiesEdit

  • Sonny Melendrez
  • Art Garza
  • Joe Nasty
  • Mark Velasco
  • Greg Martin
  • Dr. Drex


  1. ^ Billboard Vox Jox News, p.26. Billboard. April 15, 1972. Retrieved 2011-08-21.
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  6. ^ Jack-FM San Antonio Stunting With Country Music?

External linksEdit