KTSW 89.9 FM, San Marcos is a Education radio station. This radio station broadcasts in San Marcos, United States. RadioWMP.com team is pleased to have KTSW 89.9 FM online here. Please wait a moment or two because the Player - WMP - is loading the stream of KTSW 89.9 FM. In case KTSW 89.9 FM is still not playing, please refresh the page or contact Radio WMP support to fix any issues with KTSW 89.9 FM,San Marcos,United States. Radio WMP hopes you enjoy our services for KTSW 89.9 FM, Education radio station San Marcos, United States.