I know this isn't exactly topical, but I figured some readers here would find this film interesting. It's apparently an old Movietone news film taken of the show WFAA-AM did when it turned on the 50,000 watt transmitter on 820am, the frequency it shared with WBAP from 1929 to 1970. I had no idea such a film existed. Among other things, it feature the Governor of Texas at the time and the Dallas Power and Light Orchestra.
Enjoy!: https://www.youtube.com/watch?v=D4dnNgvJtGw
Enjoy!: https://www.youtube.com/watch?v=D4dnNgvJtGw