County Road 409 in McKinney. Therefore, KTNO's AM signal is much stronger in much of the Dallas/Fort Worth Metroplex as well as the cities of Wichita Falls, and Greenville, to as far north as Ada, Oklahoma, but is considerably weaker south of the Metroplex. References External links Radio Luz Dallas - Official website DFW Radio/TV History Radio stations established in 1939 TNO 1939 establishments in Texas Salem Media Group properties TNO (AM) TNO Former subsidiaries of The Walt Disney Company