Complex sentence: On February 13,1992, the callsign was changed to WKDW-FM, becoming a sister station of WKDW-AM at 900 AM until March 28,1994 when the callsign for 900 AM switched to WBGT.
Split into simpler sentences: On February 13,1992, the callsign was changed to WKDW-FM, becoming a sister station of WKDW-AM at 900 AM. On March 28,1994, the callsign for 900 AM switched to WBGT.