Willis Tower
Unlike the analog transmitter once located in Tinley Park, WJYS-DT has a transmitter atop the Willis Tower on channel 36, allowing for greater signal coverage. The WJYS signal during the analog television era reached approximately 7.5 million people in the Chicago metropolitan area, expanding to nearly 11 million households across Illinois, Indiana, Wisconsin and Michigan following the June 2009 digital transition as its digital transmitter facilities on Willis Tower replicated the coverage area of the major broadcast stations in the market.