Spurious Emission: Emission on a frequency or frequencies which are outside the necessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information. The rules for nearly every licensed radio service prohibit harmful interference and that includes the Amateur Radio Service. Any emission, radiation or induction that endangers the functioning of a radio navigation service or of other safety services or seriously degrades, obstructs or repeatedly interrupts a radiocommunications service operating in accordance with this Chapter. Harmful interference: § 15.3 (m) Harmful interference. Interference: The effect of unwanted energy due to one or a combination of RF emissions, radiation, or induction upon reception in a radiocommunication system, manifested by any performance degradation, misinterpretation, or loss of information which could be extracted in the absence of such unwanted energy. Actual FCC rules are in italics in this document. The applicable Part 15 rule section is indicated with the section symbol ( §). Some of these definitions are taken directly from the FCC rules. Let's first define the most important terms that apply to any discussion of Part 15 rules. These web pages explain the sections of Part 15 that are especially important to amateurs. There are a lot of "urban myths" that tend to confuse an already-confusing topic. What is overheard on the air, or on Internet newsgroups and discussion forums is any indication, hams don't understand much about Part 15. Amateurs will need to consider Part 15 as it relates to digital devices, computers, low-powered, unlicensed transmitters, electrical devices and any other "generic" device that might generate RF in the normal course of its operation. Part 15 covers an assortment of electronic equipment that generates RF energy whether it's intentional, unintentional or incidental.
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Part 15 of Title 47 of the Code of Federal Regulations is important to amateurs because it regulates low power, unlicensed devices that could cause interference to the Amateur Radio Service and vice versa. There are other Parts in Title 47 that govern other radio services.
These are the rules that govern ham radio.
Hams are very familiar with Part 97 of Title 47 of the Code of Federal Regulations. Links to Information about Specific Devices.Understanding the FCC Regulations for Low-Power, Non-Licensed Transmitters.Part 18 - Industrial and Scientific Devices.Part 15 Technical Requirements and Limits.
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