Radio stations tend to overlook obvious ways to increase listenership. But every station has the power to Double Your Ratings just by leveraging the current audience. And the easiest way to do that is to cross promote other shows.
At Contemporary Christian WCIC/Peoria, the afternoon show of Jake and Suzanne use this technique to promote tune-in for Jill & Jeremy the following morning. They promote relevant content (winter weather), reinforce station brand values (family), and set an appointment at a specific time (6:41 tomorrow morning).