An airport-specific radio broadcast system for broadcasting to a confined region in and about an airport having plural concourses therein includes a broadcast facility having at least one RF transmitter therein; receivers operably connected to a public speaker system in each airport concourse; broadcast content for broadcast to a specific concourse of the airport, wherein per-unit-time commitment of defined advertising time-slots in overall content material is broadcast by the broadcast system, including specific advertiser-associated time slots; content is broadcast in dwell-periods for through-passenger transit passengers, including a nominal dwell-period; and a defined ratio associating a predetermined count of broadcast advertising time-slots with the nominal dwell-period is used to determine content repetition.