KYSD (91.9 FM) is a non-commercial educational (NCE) radio station licensed to SPEARFISH, SD. Broadcasting with an effective radiated power of 6.0 kW and antenna height of 243 meters HAAT, its signal reaches approximately 77 km to the radio horizon. The station broadcasts in HD Radio digital format. The station is licensed to SOUTH DAKOTA BOARD OF DIRECTORS FOR EDUCATIONAL TELECOMMUNIC.