Around the nation, city by city, radio stations started with modest, bland programming. The stations were only on the air a few hours each day. My station had just purchased a $500,000 satellite truck, which was a huge achievement in 1988, enabling us to broadcast from anywhere. Little did we know that iPhones would arrive 25 years later, sending our satellite truck to the scrap heap, literally. David Carroll is a Chattanooga news anchor, and his latest book is “I Won’t Be Your Escape Goat,” available from his website, ChattanoogaRadioTV.com.