Radio stations need to run advertisements in order to fund the operations that they take on day-to-day. Thus, they often work with a radio advertising agency to help themselves receive the support that they need to book those ads when needed.
The radio advertising agency will jump into action to help them get the assistance that they require to get ads put up on the station. The thing about it is that all radio stations need a certain number of advertisements to sustain the total amount of programming that they want to run.
The types of advertisements that are run on the radio station are important as well. There are certain products or messages that the station is happy to be associated with, and there are others that they likely want to avoid. Fortunately, a radio advertising agency can sort out which messages are right for the station and which are not. Simply go over the types of messaging that you would like to receive from the radio advertising agency to be sure that it is clear what kind of messages you need.
At the end of the day, a radio station can get all of the ads that they need with a radio advertising agency.