Goto Section: 27.3 | 27.5 | Table of Contents
Revised as of October 22, 2020
Goto Year:2020 |
§ 27.4 Terms and definitions.
3.7 GHz Service. A radiocommunication service licensed under this part
for the frequency bands specified in § 27.5(m) (3700-3980 MHz band).
600 MHz service. A radiocommunication service licensed pursuant to this
part for the frequency bands specified in § 27.5(l).
Advanced Wireless Service (AWS). A radiocommunication service licensed
pursuant to this part for the frequency bands specified in § 27.5(h),
27.5(j), or 27.5(k).
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
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 view.
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
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
Commence operations. A 600 MHz Band licensee is deemed to commence
operations when it begins pre-launch site activation and commissioning
tests using permanent base station equipment, antennas and/or tower
locations as part of its site and system optimization in the area of
its planned commercial service infrastructure deployment.
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 radiocommunication service
licensed under this part for the frequency bands specified in § 27.5(i).
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
Fixed station. A station in the fixed service.
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
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 points.
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
Point-to-point Broadband station. A Broadband station that transmits a
highly directional signal from a fixed transmitter location to a fixed
Portable device. Transmitters designed to be used within 20 centimeters
of the body of the user.
Post-auction transition period. The 39-month period commencing upon the
public release of the Channel Reassignment Public Notice as defined in
§ 73.3700(a) of this chapter.
Public Safety Broadband Licensee. The licensee of the Public Safety
Broadband License in the 763-768 MHz and 793-798 MHz bands.
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
Radiolocation. Radiodetermination used for purposes other than those of
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
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 any 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.
Spectrum Act. The term Spectrum Act means Title VI of the Middle Class
Tax Relief and Job Creation Act of 2012 (Pub. L. 112-96).
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
Time division multiple access (TDMA). A multiple access technique
whereby users share a transmission medium by being assigned and using
(one-at-a-time) 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
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 700 MHz D Block license. The Upper 700 MHz D Block license is the
nationwide license associated with the 758-763 MHz and 788-793 MHz
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.
[ 62 FR 9658 , Mar. 3, 1997]
Editorial Note: For Federal Register citations affecting § 27.4, see the
List of CFR Sections Affected, which appears in the Finding Aids
section of the printed volume and at www.govinfo.gov.
Goto Section: 27.3 | 27.5
Goto Year: 2020 |
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