Low-power broadcasting

Low-power broadcasting is the concept of broadcasting at very low power and low cost, to a small community area. These stations tend to serve small towns, or communities within large cities in the United States. There are close to 3,000 LPTV stations in the US and they are in all markets including New York City (5 stations) to Junction City, KS (2 stations). The terms "low-power broadcasting" and "micropower broadcasting" (more commonly "microbroadcasting") should not be used interchangeably, because the markets are not the same. The former term is more often used to describe stations who have applied for and received official licences. The relationship between broadcasting power and signal range is a function of many things, such as the frequency band it uses e.g, SW or FM, the topography of the country in which it operates (lots of mountains or flat), atmospheric conditions, and finally the amount of radio frequency energy it transmits. As a general rule, the more energy it... full article at wikipedia