I see that the big 89 lineup includes some who didn't make it the first time around, like one of my favorites from the early 70's, Bill Bailey. There is a great story out there about Bill's demise on WLS. With apologies to the facts, this gist of the story is that one of the former jocks, who went across river to WCFL, came by to see Bill while he was on the air. At the time, WLS was giving away those little styrofoam balls that you put on your antenna, and Bill was going to sneak into the PD's office and filch one for his friend. To get into the PD's office required climbing out the window onto a ledge 5 stories above Michigan Avenue, and going in the PD's unlocked window. Bill was discovered in the act by a security guard, and he was history.
I went to Chicago on vacation last summer, and was almost run over trying to cross Michigan Avenue while looking at the old WLS building (they are no longer there). I was amazed to see how close physically they were to the WCFL studios, literally across the Chicago river from each other. On the way out of town, I made a pilgrimage to Tinley Park, IL, to the WLS transmitter site. As luck would have it (better than my usual luck, that is), the gates were open, and the chief engineer showed me around the building. He said the tower dated back to the 30's, and was there when they broadcast the crashing of the Hindenburg. It was a half-wave tower, so it was quite tall. As a matter of fact, too tall, because it was built when the station was on 870, so the half-wave was longer than an 890 Khz half wave.