The AirCheck Half Yearly Report tells us exactly who are the Top 20 Brands, Advertisers and Categories that have aired on Radio over the past 6 months. While Harvey Norman and Domayne are the top two brands and Harvey Norman Holdings is the top advertising entity, Car Truck Dealers collectively account for the top category of advertisers. Click on the headline to see the charts.

Did You Know’ is based on commercial and song airplay data from radio and television stations in Sydney, Melbourne, Brisbane, Gold Coast, Adelaide, Perth, Central Coast, Newcastle & Geelong. Click here for a detailed list of stations monitored.