The station signed on in 1947, at around the same time as another McKeesport-licensed radio station, WMCK AM 1360 (now WGBN). WEDO has had only this call sign, and only two owners in its history. Tri-City Broadcasting first put the station on the air and operated it until 1972, when it was purchased by 810, Inc., a wholly owned company headed by local entrepreneurs Ralph and Judith Baron. Following the death of Ralph Baron, Judy Baron, now residing in Florida, has recently established a trust that would control the station in the event of her death or incapacitation.