A concise slogan, such as KDHX's "Independent music plays here," or KYKY's slogan from the '80s, "Between rock and a soft place," usually summarizes a radio station's mission best. A slogan such as "Less talk, more rock" is easy to remember and stays with the listener.
Another type of slogan, however, from a 1991 air check isn't so concise: "The New J 96, with an increased and expanded playlist, guarantees less repetition and means more perfectly blended soft rock hits for your--"
I'm not sure how the slogan ended because the DJ had to stop talking and let Billy Vera start singing "At This Moment." I still think what I heard of that slogan would be better suited for a press release than the airwaves.