I grew up less than two miles from that WSBC AM 1240 transmitter site in Chicago. I grew up over by the Superdawg on Milwaukee and Devon. I always remember looking at that transmitter site as a kid and wondering why it was built on top of a building and not built on the ground. Good memories!
Also, with regards to WMVP AM 1000 (post WCFL days), growing up as a kid in Chicago, I always thought that WMVP was the same kind of clear-channel station as WMAQ, WGN, WBBM and WLS. This is because of how strong a station it was and how I could hear it when I would travel with my family up to Hayward, Wisconsin in the summer and down to Florida in the winter. Back then, we would listen to the Chicago Bulls and Chicago White Sox games on WMVP while traveling. It wasn’t until I moved to Phoenix, Arizona in the 90’s and started DXing in earnest that I realized WMVP wasn’t the same sort of clear channel station as WGN, WLS, WMAQ and WBBM. I could log WLS, WGN, WMAQ (now WSCR) and WBBM to varying degrees of difficulty in Phoenix because they were 50,000 watts non-directional (with WGN and WBBM being the best of the bunch reception wise), but never WMVP. It was then that I realized KOMO 1000 from Seattle was the dominant clear channel along with XEOY in Mexico City. WMVP had to use a directional antenna to protect KOMO in Seattle and XEOY in Mexico City with a null that pointed straight at me in Arizona. To this day, I have not had any success in snagging WMVP from Chicago in Phoenix, Arizona or San Diego, California on my many DXing excursions.