Radio stations have to announce their identification every hour. They must announce a legal call sign

followed by the stations community of licence.

Some examples of identification include:

http://www.youtube.com/watch?v=aFAMDAgpEcg

http://www.youtube.com/watch?v=UfhjARL9_Mk&feature=related

It is important for radio stations in the United States to identify themselves every hour so that the

FCC can regulate where the signal is being broadcast from so that they can determine if its legal or

not.

Here are some other examples of some idents for various products and television channels.