When does WKRP in Cincinnati return?

WKRP premiered on September 18, 1978, on the CBS television network and aired for four seasons and 90 episodes. The ensemble cast consists of Gary Sandy (as Andy Travis), Howard Hesseman (Dr. Johnny Fever), Gordon Jump (Arthur Carlson), Loni Anderson (Jennifer Marlowe), Tim Reid (Venus Flytrap), Jan Smithers (Bailey Quarters) and Richard Sanders (Herb Tarlek) The series won a Humanitas Prize and received 10 Emmy Award nominations, including three for Outstanding Comedy Series.
Andy Travis tries to turn around struggling radio station WKRP by switching its format from easy-listening music to rock and roll. Travis hires a new disc jockey and allows spaced-out former major-market DJ John Caravella to be himself on-air.