Just got some pix from a Tulsa TV friend, from back when he was doing radio in Fort Worth in the mid 1950s. He included a mention of the cowbells that rang each time WBAP and WFAA swapped frequencies (570 and 820). That made me think of the steamboat whistle Mark Driscoll used on our "WRNO, Music Motha on the Father of Waters" sweeper in 1970. Which, of course, rang me back to the legendary WTIX era, when GM Fred Berthelson made them ring that God-awful "time chime" -- as the story goes, so he could hear it while strolling around the French Quarter. Jump in here. What were others?