Pros of Radio Advertising

• You can target your advertising to a specific audience. Different radio stations have different formats, from news/talk to oldies to rock. Decide who you are trying to reach (teenagers, families, urban men, suburban moms), and then choose the radio format that reaches your audience.
• A 30-second ad on radio is often less expensive than a 30-second TV ad and easier to produce.
• Radio ads can be produced very quickly, unlike television ads. And unlike magazine print ads, you do not have to wait for the next issue to come out.

Source: allbusiness.com