Understanding the FCC Regulations for Low-Power, Non-Licensed Transmitters

摘要

Low-power, non-licensed transmitters are used virtually everywhere. Cordlessphone, baby monitors, garage door openers, wireless home security systems, keyless automobile entry systems and hundreds of other types of common electronic equipment rely on such transmitters to function. At any time of day, most people are within a few meters of consumer products that use low-power, non-licensed transmitters. Non-licensed transmitters operate on a variety of frequencies. They must share these frequencies with licensed transmittes and are prohibited from causing interference to licensed transmitters. The Federal Communications Commission (FCC) has rules to limit the potential for harmful interference to licensed transmitters by low-power, non-licensed transmitters. In its regulations, the FCC takes into account that different types of products that incorporate low-power transmitters have different potentials for causing harmful interference. As a result, the FCC's regulations are most restrictive on products that are likely to cause harmful interference, and less restrictive on those that are least likely to cause interference. This bulletin is intended to provide a general understanding of the FCC's regulations and policies applying to products using low-power transmitters. It reflects the current text and interpretation of the FCC's regulations. More detailed information is contained in the regulations themselves, which can be found in Part 15 of Title 47 of the Code of Federal Regulations. This bulletin does not replace or supersede those regulations.