Advanced wireless service (AWS). A radiocommunication service licensed pursuant to this part for the
frequency bands specified in § 27.5(h).
Affiliate. This term shall have the same meaning as that for
‘‘affiliate’’ in part 1, § 1.2110(b)(5) of this chapter.
Assigned frequency. The center of the
frequency band assigned to a station.
Attended operation. Operation of a station by a designated
person on duty at the place where the transmitting apparatus is located with the transmitter in the person’s
Authorized bandwidth. The maximum width of the band of frequencies permitted to be used by
a station. This is normally considered to be the necessary or occupied bandwidth, whichever is greater.
Average terrain. The average elevation of terrain between 3 and 16 kilometers from the antenna site.
Base station. A land station in the land mobile service.
Booster service area. A geographic area to be
designated by an applicant for a booster station, within which the booster station shall be entitled to
protection against interference as set forth in this part. The booster service area must be specified by the
applicant so as not to overlap the booster service area of any other booster authorized to or proposed by the
applicant. However, a booster station may provide service to receive sites outside of its booster service
area, at the licensee’s risk of interference. The booster station must be capable of providing substantial
service within the designated booster service area.
Broadband Radio Service (BRS). A radio service
using certain frequencies in the 2150–2162 and 2496–2690 MHz bands which can be used to provide fixed and
mobile services, except for aeronautical services.
Broadcast services. This term shall have the same
meaning as that for ‘‘broadcasting’’ in section 3(6) of the Communications Act of 1934, i.e., ‘‘the
dissemination of radio communications intended to be received by the public, directly or by the intermediary
of relay stations.’’ 47 U.S.C. 153(6).
Documented complaint. A complaint that a party is suffering
from non-consensual interference. A documented complaint must contain a certification that the complainant has
contacted the operator of the allegedly offending facility and tried to resolve the situation prior to filing.
The complaint must then specify the nature of the interference, whether the interference is constant or
intermittent, when the interference began and the site(s) most likely to be causing the interference. The
complaint should be accompanied by a videotape or other evidence showing the effects of the interference. The
complaint must contain a motion for a temporary order to have the interfering station cease transmitting. The
complaint must be filed with the Secretary’s office and served on the allegedly offending party.
Educational Broadband Service (EBS). A fixed or mobile service, the licensees of which are educational
institutions or non-profit educational organizations, and intended primarily for video, data, or voice
transmissions of instructional, cultural, and other types of educational material to one or more receiving
Effective Radiated Power (ERP) (in a given direction). The product of the power supplied to
the antenna and its gain relative to a half-wave dipole in a given direction.
Equivalent Isotropically Radiated Power (EIRP). The product of the power supplied to the antenna and
the antenna gain in a given direction relative to an isotropic antenna.
Fixed service. A radio
communication service between specified fixed points.
Fixed station. A station in the fixed service.
Guard band manager. The term Guard band manager refers to a commercial licensee in the 746–747 MHz, 762–764
MHz, 776–777 MHz, and 792–794 MHz bands that functions solely as a spectrum broker by subdividing its licensed
spectrum and making it available to system operators or directly to end users for fixed or mobile
communications consistent with Commission Rules. A Guard band manager is directly responsible for any
interference or misuse of its licensed frequency arising from its use by such non-licensed entities.
Land mobile service. A mobile service between base stations and land mobile stations, or between land mobile
Land mobile station. A mobile station in the land mobile service capable of surface movement
within the geographic limits of a country or continent.
Land station. A station in the mobile service not intended to be used while in motion.
Band Segment (LBS). Segment of the BRS/EBS band consisting of channels in the frequencies 2496–2572 MHz.
Middle Band Segment (MBS).
Segment of the BRS/EBS band consisting of channels in the frequencies 2572–2614 MHz.
Mobile service. A
radio communication service between mobile and land stations, or between mobile stations.
Mobile station. A station in the mobile service intended to be used while in motion or during halts at
National Geodetic Reference System (NGRS). The name given to all geodetic control data contained in the
National Geodetic Survey (NGS) data base. (Source: National Geodetic Survey, U.S. Department of Commerce)
Point-to-point Broadband station. A Broadband station that transmits a highly directional signal from a fixed
transmitter location to a fixed receive location.
Portable device. Transmitters designed to be used
within 20 centimeters of the body of the user.
Radiodetermination. The determination of the position,
velocity and/or other characteristics of an object, or the obtaining of information relating to these
parameters, by means of the propagation properties of radio waves.
used for purposes other than those of radionavigation.
Radiolocation land station. A station in the radiolocation service not intended to be used while in
Radiolocation mobile station. A station intended to be used while in motion or during halts at
Radionavigation. Radiodetermination used for the purpose of navigation, including
Remote control. Operation of a station by a designated person at a control
position from which the transmitter is not visible but where suitable control and telemetering circuits are
provided which allow the performance of the essential functions that could be performed at the transmitter.
Satellite Digital Audio Radio Service (satellite DARS). A radiocommunication service in which compact disc
quality programming is digitally transmitted by one or more space stations.
Sectorization. The use of
an antenna system at an broadband station, booster station and/or response station hub that is capable of
simultaneously transmitting multiple signals over the same frequencies to different portions of the service
area and/or simultaneously receiving multiple signals over the same frequencies from different portions of the
Studio to transmitter link (STL). A directional path used to transmit a signal from a
station’s studio to its transmitter. Temporary fixed broadband station. A broadband station used for the
transmission of material from temporary unspecified points to a broadband station.
multiple access (TDMA). A multiple access technique whereby users share a transmission medium by being
assigned and using (one-at-atime) for a limited number of time division mulitplexed channels; implies that
several transmitters use one channel for sending several bit streams.
Time division multiplexing
(TDM). A multiplexing technique whereby two or more channels are derived from a transmission medium by
dividing access to the medium into sequential intervals. Each channel has access to the entire bandwidth of
the medium during its interval. This implies that one transmitter uses one channel to send several bit streams
Unattended operation. Operation of a station by automatic means whereby the transmitter is turned on and
off and performs its functions without attention by a designated person.
Universal Licensing System.
The Universal Licensing System (ULS) is the consolidated database, application filing system, and processing
system for all Wireless Radio Services. ULS supports electronic filing of all applications and related
documents by applicants and licensees in the Wireless Radio Services, and provides public access to licensing
Upper Band Segment (UBS). Segment of the BRS/EBS band consisting of channels in the
frequencies 2614–2690 MHz
Wireless communications service. A radiocommunication service licensed pursuant to this part for the
frequency bands specified in § 27.5.