Tucson's radio history began in the 1920s with two stations that became KTUC and KVOA. Today, there are 16 AM and 23 FM stations serving Tucson, with several other AM signals from Phoenix penetrating the local airwaves. Talk radio and music radio personalities have been companions for listeners at home or on the road. Mornings have been the most listened-to time period of the day, from the days of George and Square Deal, Chris Borden, and Jerry Stowe to Mojo and Betsy, Bobby Rich, Sunny Jim Arnold, and Cactus Dave. Frank Kalil on KTKT in the afternoons was the star who kept the audience laughing all the way home.