Originally owned by Ranulf Compton, WTMR began operations in the late 1940s as WKDN (a 1,000-watt, daytime-only station), but the station was sold in 1968, and that is when the call letters changed to WTMR.
It was originally owned by Ranulf Compton, and was a 1,000-watt, daytime-only station that broadcast middle-of-the-road music. The station began operations in the late 1940s as WKDN. The call letters became WTMR after the station was sold in 1968. 
