KTSW 89.9

The other side of radio.

KTSW 89.9 logo

KTSW 89.9 (KTSW, 89.9 FM) is an Alternative radio station licensed to San Marcos, TX, and serves the Austin radio market. The station is currently owned by Texas State University.

  • Call sign: KTSW
  • Frequency: 89.9 FM
  • City of license: San Marcos, TX
  • Format: Alternative
  • Owner: Texas State University
  • Area Served: Austin


  • Address: 203 Pleasant St, San Marcos, TX 78666
  • Phone number: 512-245-5879
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