Comparison of two radio diary methodologies
Eva Tolkunow BBM Bureau of Measurement
INTRODUCTION
BBM Bureau of Measurement is a Canadian, tripartite, co-operative organization that provides radio and television audience ratings data to its members. Canada has a unique geography: it is large in area (5,514 km from west to east and 4,634 km from south to north), but more than 85% of Canadians live within a 300 kilometer strip along the border of Canada and the United States.1This creates a very long and narrow geography which makes national radio network broadcasting a challenge. Because of this, most...