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hawai99Tune in and listen to WTHI HI 99.9 FM live on myTuner Radio. Enjoy the best internet radio experience for free.Contact Us. If you need assistance we are here to help. Corporate Address . 99-193 Aiea Hehts Dr. Aiea, HI 96701. 808.677.7998 (Automated phone tree). 808.677.7999 (Front Desk)