CBS ends CBS Radio network and NYT looks back with nostalgia. Old black and white pictures of CBS Radio and correspondents Edward Morrow from London, FDR fireside chats broadcast in 1933 over radio, Adm. Byrd Antartica expedition coverage. The CBS president calls it the "the foundation of everything we built since 1927," a CBS producer calls it one more step in the end of a 100 year old tradition. CBS has 700 affiliates radio stations across America that feed CBS News on radio to reach 93% of Americans. Many of them hear CBS on their commute to and from work. Now these stations will have to look elsewhere as the service is closing.