This paper begins by describing the development and methodology of RAJAR - the UK's first jointly agreed audience research system for radio, setting this in the context of the structure and needs of the two broadcast sectors - BBC and commercial. It then focuses on a number of key areas of technical challenge reflecting the complexity of the present and future radio environment. In particular there is discussion of four issues: sampling methodology in the face of multiple overlaps of local station areas measurement problems given the growth in station choice issues relating to reporting and information reliability operational issues associated with a very large measurement service. The paper concludes by suggesting that the future promises further challenges and suggests that even if harmonisation of methodology is not in prospect, at the very least radio researchers from different countries should compare notes.
- This could also be of interest