Radio and television broadcasting in the United States have
passed through four stages of development. Each stage corresponds
roughly to the formal regulatory environment,
[18]
but formal regulatory structures are themselves determined by
technological, organizational, and social developments.
[19]
Footnotes
[[18]]
Neuendorf, supra note 6, at 72.
[[19]]
The dates attached to each stage are only rough
approximations. Beginning dates correspond to specific developments,
although the real impact of that development may not be felt for
some years. Similarly, the denotation of a new phase does not
usually represent a sharp departure from the previous stage.
