The term "national radio" refers to a radio station or broadcast that covers and reaches a large area or the entire country. It is radio programming that is available to all people in a particular nation. Full definition
Those at the very top of the profession, such as the hosts of national radio shows, earn $ 200,000 or more per year. (sciencemag.org)
He has published more than 200 scientific articles and 4 books, several hundred photographs and appeared on national radio and television programs. (umb.edu)
But can national radio shows have a major effect on book sales? (bookpr.com)