KJXK
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| City | San Antonio, Texas |
|---|---|
| Broadcast area | San Antonio metropolitan area |
| Branding | 102.7 Jack FM |
| Slogan | Playing What We Want |
| Frequency | 102.7 MHz |
| First air date | 1969 (as KTFM) |
| Format | Adult Hits Variety |
| Language(s) | English |
| Audience share | 4.2  (January 2017, Nielsen Audio[1]) |
| ERP | 100,000 watts |
| HAAT | 202 meters |
| Class | C1 |
| Facility ID | 71086 |
| Callsign meaning | JacK FM |
| Former callsigns | KTFM (1969-2003) KSRX (2003-2006) |
| Owner |
Alpha Media (Alpha Media Licensee LLC) |
| Sister stations | KLEY-FM, KSAH, KSAH-FM, KTFM, KTSA, KHHL, KZDC |
| Webcast | Listen Live |
| Website | jackfmsa.com |
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.
102.7 signed on in 1969 as KTFM. In 1972, KTFM was looking into a format switch to progressive rock, 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. 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. 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.
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