Nonprofit broadcasting typically comes in three forms: radio evangelism, community radio, and government-subsidized public radio, all of which rely at least to some extent on listener donations.
美国的非盈利电台有三种典型形式：宗教电台、社区电台（英语：Community radio）和政府补贴的公共电台，它们都至少在某种程度上依赖听众的捐款。