 Other area high school athletics that KMHT covers include Harleton, Karnack, and Waskom.A group of local veterans returned to Marshall from World War II and took advantage of their right to first preferences of frequencies after the radio frequency freeze was lifted at the end of the war.In 1961, after 14 years of operation, KMHT AM was granted FCC permission to raise the daytime power from 250 watts to 1,000 watts.