Clear Channel Katz Advantage engages Great Jakes to design a new website Clear Channel Katz Advantage (CCKA), the marketing and strategic sales division of the nation’s largest group of national spot radio representatives, recently engaged Great Jakes to design a new website. CCKA, a unit of the Katz Media Group, works with advertisers and their agencies to create and execute radio-centric marketing campaigns for a diverse assortment of products and services ranging from aspirin to tax preparation.