It is not unusual for one large corporation to own hundreds of stations all over the country. It is not unusual for one owner to run five or six stations in your city. Sales people can arrange for you to have your commercial running on several different stations with different formats and individual audiences. How to produce your radio commercial Most radio stations will produce your radio commercial for you at no additional charge. In most cases, the sales person who places your spots will also write your ad copy.
Radio stations have to do a lot of work very quickly.
Although some sales folks are excellent writers, most weren't training for that part of their job. You may do better to enlist the help of a professional writer. Contact local writing clubs. Search for freelance writers online. Sixty second ads are usually a better deal than 30 second ads.