KOSY was a Class D regional AM radio station broadcasting an oldies format. Licensed to Texarkana, Arkansas, United States, it served the Texarkana area. The station was owned by Townsquare Media. Studios were located on Arkansas Boulevard in Texarkana, Arkansas, with a transmitter site on Line Ferry Road in the south portion of the city. The Line Ferry Road site had two towers, constructed for a nighttime directional signal of 500 watts, that later operated non-directional on one tower with 23 watts at night.