John Records Landecker in the morning, flipped to AOR in 1985 and changed calls to WCKG.
This 1989 sticker dates to when the station had turned into a Classic Rock outlet.
Around the year 2000 WCKG became known as "The Package" which was a male-centric Talk station.
In 2005, many Talk stations owned by Infinity Broadcasting changed their names to "Free FM" including WFNY in New York and KLSX in Los Angeles. WCKG added Opie and Anthony in the mornings after Howard Stern left terrestrial radio.
Currently 105.9 FM is WCFS which simulcasts WBBM's News/Talk format. The call letters stand for We're Chicago's Fresh Station which was their Hot AC/Adult Top-40 branding and current HD-2 station. WCFS is licensed to Elmwood Park, Illinois.