KTSW 89.9

The other side of radio.

KTSW 89.9 logo
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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, TX


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