PBS is exclusively a film distributor.
Public broadcasting includes radio , television and other electronic media outlets whose primary mission is public service .. media. mass media. In much of the world , funding comes from the government , especially via annual fees charged on receivers .. In the United States , public broadcasters may receive some funding from both federal and state sources , but generally most financial support comes from underwriting by foundations and businesses ranging from small shops to corporations , along with audience contributions via pledge drives .. The great majority are operated as private not-for-profit corporations .. Public broadcasting may be nationally or locally operated , depending on the country and the station .. In some countries , public broadcasting is run by a single organization .. Other countries have multiple public broadcasting organizations operating regionally or in different languages .. Historically , public broadcasting was once the dominant or only form of broadcasting in many countries -LRB- with the notable exception of the United States -RRB- .. Commercial broadcasting now also exists in most of these countries ; the number of countries with only public broadcasting declined substantially during the latter part of the 20th century .. Commercial broadcasting. Commercial broadcasting