"This study claims to be one of the first attempts to explore the field of radio economics in rural Africa. Based on in-depth questionnaires filled in by 15 radio stations in Uganda, Tanzania, Malawi, Ghana and Mali, it found that the costs vary widely according to the type of ownership, i.e. public, commercial or community radio. The average start-up costs fluctuate between $50,000 and 100,000. The annual operating costs range between $20,000 to $540,000 for public broadcasters, $2,500 to $930,000 for commercial stations and $2,500 to $286,000 for community stations. The costs of programming are largely dependant on the level of interactivity of the programme format, the accessibility of additional resources to produce specialised programmes, and the type of station producing the programme. The study found that community stations tended to invest more resources in interactive programming with community involvement and less on in-studio formats. The sale of airtime is important revenue for most stations. There is no shortage of investment for starting up radio stations (in particular community radios), but the common challenge remains the sustainability beyond the initial investment." (CAMECO Update 1-2009)