@AE4WX @flockofnazguls @th Ah, I didn't realize the receiver for the signal from the studio was on top of the Hancock. I know Chicago geography, but hadn't thought about where the TV transmitters were. I come from rural Florida, where getting line-of-sight to a tower was never very hard.
@roadriverrail @flockofnazguls @th So what happened was, back in those analog days, WGN and WTTW transmitted a link to their main transmitters on top of the Hancock Building and Sears Tower (I forget which was which). The hijacker basically sent a stronger signal than the station link, and because of FM capture, voilĂ - the hijackers signal wins.