Listing all the definitions and abbreviations used in the technical
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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 plain
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
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
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
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
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 stations.
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.
Lower 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 unspecified
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.
Radiolocation. Radiodetermination used for purposes
other than those of radionavigation.
Radiolocation land station. A station in the
radiolocation service not intended to be used while in motion.
Radiolocation mobile station. A station intended
to be used while in motion or during halts at unspecified points.
Radionavigation. Radiodetermination used for
the purpose of navigation, including obstruction warning.
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 service area.
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.
Time division 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 of information.
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 information.
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.