In the United States, the Federal Communications Commission (FCC) regulates all radio broadcast transmissions. The FCC stipulates what standards or systems must be used and licenses stations to operate on particular frequency allocations at specific power levels. Stations within a certain distance of the borders with Canada and Mexico must also comply with related treaties and agreements made by the United States with the governments of those countries.
There is no named standard as such for basic AM and FM analog radio transmission. The modulation and transmission systems use principles and technologies that are well defined and used throughout the world. The FCC rules, however, specify various parameters, such as channels ...