WCGO was previously called WLTD from 1970 to 1975 and aired music, old-time radio shows, and talk shows.
Its call sign was changed to WLTD on November 2, 1970. WLTD aired easy listening music, old-time radio shows, and specialty talk shows. On May 2, 1970, Chuck Schaden's first Those Were The Days program aired on WNMP. It continued on WLTD until 1975, when the station changed format. On April 9, 1979, the station's call sign was changed to WONX. 
