Information AboutPart 15 |
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SUBPARTS A - General Subpart A includes 21 sections from 15.1 to 15.38 (note that the . is a separator not a Decimal ). B - Unintentional radiators Subpart B deals with Unintentional Radiator s --- devices that are not designed to produce radio waves, but do anyway, such as Computer s. There are 16 sections between 15.101 and 15.123. C - Intentional radiators Subpart C deals with devices that are specifically designed to produce coherent radio waves, such as small Transmitter s. Specific to Broadcasting , 15.239 deals with the FM band, while 15.221 (and 15.219) deal with the AM band. D - Unlicensed PCS devices Sections 15.301 to 15.323 deal with unlicensed PCS devices from 1910 to 1930 and 2390 to 2400 MHz . E - Unlicensed NII devices 15.401 to 15.407 deal with unlicensed National Information Infrastructure (U-NII) devices. F - Ultra-wideband operation 15.501 to 15.525 deal with Ultra-wideband (UWB) devices, including Ground-penetrating Radar . G - Access Broadband over Power Line 15.601 to 15.615 deal with Access Broadband Over Power Lines (BPL) devices operating in the 1.705-80 MHz band over medium or low voltage lines. SUBJECTS Unlicensed broadcasting Unlicensed broadcasts on the {Link without Title} broadcast band are limited to a Signal Strength of 250 µV / Meter at a distance of 3 meters from the Antenna . The FM broadcast band is limited but not restricted to 87.5 MHz to 108.1 MHz. Any unlicensed broadcasting over a signal strength of 250 µV/meter at a distance of 3 m from the antenna is punishable by law and confiscation of all broadcast equipment. Unlicensed broadcasts on the FM broadcast band are also limited to a signal strength of 250 µV/meter at a distance of 3 meters, however this may instead be measured from the edge of a Campus in order to allow for a College Radio station to operate. Unlicensed broadcasts on the TV broadcast bands are prohibited, except for certain Medical Telemetry Device s. 87.5 to 88.0 MHz is considered part of the VHF TV band (channel 6 audio is on 87.75), though it shows up on most FM Tuner s. For TV, 15.241 and 15.242 deal with high VHF (channels 7 to 13), 15.242 also deals with UHF. Part 15 of the FCC rules and regulations regarding unlicensed FM, AM, and TV broadcasting. Wireless devices in ISM bands Unlicensed bands at 900 MHz, 2.4 GHz (2400~2483 MHz), and 5.8 GHz were originally considered to be used only for Industrial , Scientific , and Medical ( ISM ) purposes, however the general lack of use of these bands has led the FCC to allow their use for Cordless Phone s, and now for Wireless Networking , including Wi-Fi and Bluetooth . These are covered under sections 15.243 to 15.249. Spurious emissions Electronic equipment from Computer s to intentional Transmitter s can produce unwanted radio signals and are subject to FCC regulation. For digital devices including computers and peripherals, FCC Class B is the more stringent standard, applying to equipment marketed for use in the home, even if it could be used elsewhere. Home users are likely to be annoyed by Interference to TV and radio reception. Class A is a looser standard for equipment intended only for Business , industrial and commercial settings. Transmitters also must adhere to a Spectral Mask , to prevent Adjacent Channel interference, Intermediate Frequency interference, and Intermodulation . See also EXTERNAL LINKS |
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