Goto Section: 25.226 | 25.250 | Table of Contents
FCC 25.227
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 25.227 Blanket licensing provisions for Earth Stations Aboard Aircraft
(ESAAs) receiving in the 10.95-11.2 GHz (space-to-Earth), 11.45-11.7 GHz
(space-to-Earth), and 11.7-12.2 GHz (space-to-Earth) frequency bands and
transmitting in the 14.0-14.5 GHz (Earth-to-space) frequency band, operating
with Geostationary Satellites in the Fixed-Satellite Service.
(a) The following ongoing requirements govern all ESAA licensees and
operations in the 10.95-11.2 GHz (space-to-Earth), 11.45-11.7 GHz
(space-to-Earth), 11.7-12.2 GHz (space-to-Earth) and 14.0-14.5 GHz
(Earth-to-space) frequency bands receiving from and transmitting to
geostationary orbit satellites in the Fixed-Satellite Service. ESAA
licensees shall comply with the requirements in either paragraph (a)(1),
(a)(2) or (a)(3) of this section and all of the requirements set forth in
paragraphs (a)(4) through (a)(16) and paragraphs (c), (d), and (e) of this
section. Paragraph (b) of this section identifies items that shall be
included in the application for ESAA operations to demonstrate that these
ongoing requirements will be met.
(1) The following requirements shall apply to an ESAA that uses transmitters
with off-axis EIRP spectral-densities lower than or equal to the levels in
paragraph (a)(1)(i) of this section. ESAA licensees operating under this
section shall provide a detailed demonstration as described in paragraph
(b)(1) of this section. The ESAA transmitter also shall comply with the
antenna pointing and cessation of emission requirements in paragraphs
(a)(1)(ii) and (iii) of this section.
(i) An ESAA licensee shall not exceed the off-axis EIRP spectral-density
limits and conditions defined in paragraphs (a)(1)(i)(A) through (D) of this
subsection.
(A) The off-axis EIRP spectral-density for co-polarized signals emitted from
the ESAA, in the plane of the geostationary satellite orbit (GSO) as it
appears at the particular earth station location, shall not exceed the
following values:
15 - 10 log10 (N) - 25 log10θ dBW/4 kHz For 1.5° ≤θ ≤7°
-6 - 10 log10 (N) dBW/4 kHz For 7° <θ ≤9.2°
18 - 10 log10 (N) - 25 log10θ dBW/4 kHz For 9.2° <θ ≤48°
-24 - 10 log10 (N) dBW/4 kHz For 48° <θ ≤85°
-14 - 10 log10 (N) dBW/4 kHz For 85° <θ ≤180°
where theta (θ) is the angle in degrees from the line connecting the focal
point of the antenna to the orbital location of the target satellite in the
plane of the GSO. The plane of the GSO is determined by the focal point of
the antenna and the line tangent to the arc of the GSO at the orbital
location of the target satellite. For ESAA networks using frequency division
multiple access (FDMA) or time division multiple access (TDMA) techniques, N
is equal to one. For ESAA networks using multiple co-frequency transmitters
that have the same EIRP density, N is the maximum expected number of
co-frequency simultaneously transmitting ESAA earth stations in the same
satellite receiving beam. For the purpose of this subsection, the peak EIRP
density of an individual sidelobe shall not exceed the envelope defined
above for θ between 1.5° and 7.0°. For θ greater than 7.0°, the envelope
shall be exceeded by no more than 10% of the sidelobes, provided no
individual sidelobe exceeds the envelope given above by more than 3 dB.
(B) In all directions other than along the GSO, the off-axis EIRP
spectral-density for co-polarized signals emitted from the ESAA shall not
exceed the following values:
18 - 10 log10 (N) - 25log log10θ dBW/4 kHz For 3.0° ≤θ ≤48°
-24 - 10 log10 (N) dBW/4 kHz For 48° <θ ≤85°
-14 - 10 log10 (N) dBW/4kHz For 85° <θ ≤180°
where θ and N are defined in paragraph (a)(1)(i)(A). This off-axis EIRP
spectral-density applies in any plane that includes the line connecting the
focal point of the antenna to the orbital location of the target satellite
with the exception of the plane of the GSO as defined in paragraph
(a)(1)(i)(A) of this section. For the purpose of this subsection, the
envelope shall be exceeded by no more than 10% of the sidelobes provided no
individual sidelobe exceeds the EIRP density envelope given above by more
than 6 dB. The region of the main reflector spillover energy is to be
interpreted as a single lobe and shall not exceed the envelope by more than
6 dB.
(C) The off-axis EIRP spectral-density for cross-polarized signals emitted
from the ESAA shall not exceed the following values:
5 - 10 log10 (N) - 25log10θ dBW/4kHz For 1.8° <θ ≤7°
-16 - 10 log10 (N) dBW/4kHz For 7° <θ ≤9.2°
where θ and N are defined in paragraph (a)(1)(i)(A). This off-axis EIRP
spectral-density applies in the plane of the geostationary satellite orbit
as it appears at the particular earth station location.
(ii) Each ESAA transmitter shall meet one of the following antenna pointing
requirements:
(A) Each ESAA transmitter shall maintain a pointing error of less than or
equal to 0.2° between the orbital location of the target satellite and the
axis of the main lobe of the ESAA antenna; or
(B) Each ESAA transmitter shall declare a maximum antenna pointing error
that may be greater than 0.2° provided that the ESAA does not exceed the
off-axis EIRP spectral-density limits in paragraph (a)(1)(i) of this
section, taking into account the antenna pointing error.
(iii) Each ESAA transmitter shall meet one of the following cessation of
emission requirements:
(A) For ESAAs operating under paragraph (a)(1)(ii)(A) of this section, all
emissions from the ESAA shall automatically cease within 100 milliseconds if
the angle between the orbital location of the target satellite and the axis
of the main lobe of the ESAA antenna exceeds 0.5°, and transmission shall
not resume until such angle is less than or equal to 0.2°, or
(B) For ESAA transmitters operating under paragraph (a)(1)(ii)(B) of this
section, all emissions from the ESAA shall automatically cease within 100
milliseconds if the angle between the orbital location of the target
satellite and the axis of the main lobe of the ESAA antenna exceeds the
declared maximum antenna pointing error and shall not resume transmissions
until such angle is less than or equal to the declared maximum antenna
pointing error.
(2) The following requirements shall apply to an ESAA, or ESAA system, that
uses off-axis EIRP spectral-densities in excess of the levels in paragraph
(a)(1)(i) of this section. An ESAA, or ESAA network, operating under this
subsection shall file certifications and provide a detailed demonstration as
described in paragraph (b)(2) of this section.
(i) The ESAA shall transmit only to the target satellite system(s) referred
to in the certifications required by paragraph (b)(2) of this section.
(ii) If a good faith agreement cannot be reached between the target
satellite operator and the operator of a future satellite that is located
within 6 degrees longitude of the target satellite, the ESAA operator shall
accept the power-density levels that would accommodate that adjacent
satellite.
(iii) The ESAA shall operate in accordance with the off-axis EIRP
spectral-densities that the ESAA supplied to the target satellite operator
in order to obtain the certifications listed in paragraph (b)(2) of this
section. The ESAA shall automatically cease emissions within 100
milliseconds if the ESAA transmitter exceeds the off-axis EIRP
spectral-densities supplied to the target satellite operator and
transmission shall not resume until ESAA conforms to the off-axis EIRP
spectral densities supplied to the target satellite operator.
(iv) In the event that a coordination agreement discussed in paragraph
(b)(2)(ii) of this section is reached, but that coordination agreement does
not address protection from interference for the earth station, that earth
station will be protected from interference to the same extent that an earth
station that meets the requirements of § 25.209 of this title would be
protected from interference.
(3) The following requirements shall apply to an ESAA system that uses
variable power-density control of individual simultaneously transmitting
co-frequency ESAA earth stations in the same satellite receiving beam. An
ESAA system operating under this subsection shall provide a detailed
demonstration as described in paragraph (b)(3) of this section.
(i) The effective aggregate EIRP density from all terminals shall be at
least 1 dB below the off-axis EIRP density limits defined in paragraph
(a)(1)(i)(A) through (C), with the value of N = 1. In this context the term
“effective” means that the resultant co-polarized and cross-polarized EIRP
density experienced by any GSO or non-GSO satellite shall not exceed that
produced by a single transmitter operating 1 dB below the limits defined in
paragraph (a)(1)(i)(A) through (C). The individual ESAA transmitter shall
automatically cease emissions within 100 milliseconds if the ESAA
transmitter exceeds the off-axis EIRP density limits minus 1 dB specified
above. If one or more ESAA transmitters causes the aggregate off-axis
EIRP-densities to exceed the off-axis EIRP density limits minus 1dB
specified above, then the transmitter or transmitters shall cease or reduce
emissions within 100 milliseconds of receiving a command from the system's
network control and monitoring center. An ESAA system operating under this
subsection shall provide a detailed demonstration as described in paragraph
(b)(3)(i) of this section.
(ii) The following requirements shall apply to an ESAA that uses off-axis
EIRP spectral-densities in excess of the levels in paragraph (a)(3)(i) of
this section. An ESAA system operating under this subsection shall file
certifications and provide a detailed demonstration as described in
paragraphs (b)(3)(ii) and (b)(3)(iii) of this section.
(A) If a good faith agreement cannot be reached between the target satellite
operator and the operator of a future satellite that is located within 6
degrees longitude of the target satellite, the ESAA shall operate at an EIRP
density defined in (a)(3)(i) of this section.
(B) The ESAA shall operate in accordance with the off-axis EIRP
spectral-densities that the ESAA supplied to the target satellite operator
in order to obtain the certifications listed in paragraph (b)(3)(ii) of this
section. The individual ESAA terminals shall automatically cease emissions
within 100 milliseconds if the ESAA transmitter exceeds the off-axis EIRP
spectral-densities supplied to the target satellite operator. The overall
system shall be capable of shutting off an individual transmitter or the
entire system if the aggregate off-axis EIRP spectral-densities exceed those
supplied to the target satellite operator.
(C) The ESAA shall transmit only to the target satellite system(s) referred
to in the certifications required by paragraph (b)(3) of this section.
(4) An applicant filing to operate an ESAA terminal or system and planning
to use a contention protocol shall certify that its contention protocol use
will be reasonable.
(5) There shall be a point of contact in the United States, with phone
number and address, available 24 hours a day, seven days a week, with
authority and ability to cease all emissions from the ESAA.
(6) For each ESAA transmitter, a record of the vehicle location (i.e.,
latitude/longitude/altitude), transmit frequency, channel bandwidth and
satellite used shall be time annotated and maintained for a period of not
less than one year. Records shall be recorded at time intervals no greater
than one (1) minute while the ESAA is transmitting. The ESAA operator shall
make this data available, in the form of a comma delimited electronic
spreadsheet, within 24 hours of a request from the Commission, NTIA, or a
frequency coordinator for purposes of resolving harmful interference events.
A description of the units (i.e., degrees, minutes, MHz * * *.) in which
the records values are recorded will be supplied along with the records.
(7) In the 10.95-11.2 GHz (space-to-Earth) and 11.45-11.7 GHz
(space-to-Earth) frequency bands ESAAs shall not claim protection from
interference from any authorized terrestrial stations to which frequencies
are either already assigned, or may be assigned in the future.
(8) An ESAA terminal receiving in the 11.7-12.2 GHz (space-to-Earth) bands
shall receive protection from interference caused by space stations other
than the target space station only to the degree to which harmful
interference would not be expected to be caused to an earth station
employing an antenna conforming to the referenced patterns defined in
paragraphs (a) and (b) of section 25.209 and stationary at the location at
which any interference occurred.
(9) Each ESAA terminal shall automatically cease transmitting within 100
milliseconds upon loss of reception of the satellite downlink signal or when
it detects that unintended satellite tracking has happened or is about to
happen.
(10) Each ESAA terminal should be subject to the monitoring and control by
an NCMC or equivalent facility. Each terminal must be able to receive at
least “enable transmission” and “disable transmission” commands from the
NCMC and must automatically cease transmissions immediately on receiving any
“parameter change command,” which may cause harmful interference during the
change, until it receives an “enable transmission” command from its NCMC. In
addition, the NCMC must be able to monitor the operation of an ESAA terminal
to determine if it is malfunctioning.
(11) Each ESAA terminal shall be self-monitoring and, should a fault which
can cause harmful interference to FSS networks be detected, the terminal
must automatically cease transmissions.
(12) Unless otherwise stated all ESAA system that comply with the off-axis
EIRP spectral-density limits in paragraph (a)(1)(i) of this section may
request Permitted List authority.
(13) ESAA providers operating in the international airspace within
line-of-sight of the territory of a foreign administration where fixed
service networks have primary allocation in this band, the maximum power
flux density (pfd) produced at the surface of the Earth by emissions from a
single aircraft carrying an ESAA terminal should not exceed the following
values unless the foreign Administration has imposed other conditions for
protecting its fixed service stations:
-132 + 0.5 · θ dB(W/(m^2 · MHz)) For θ ≤40°
-112 dB(W/(m^2 · MHz)) For 40° <θ ≤90°
Where: θ is the angle of arrival of the radio-frequency wave (degrees above
the horizontal) and the aforementioned limits relate to the pfd and angles
of arrival would be obtained under free-space propagation conditions.
(14) All ESAA terminals operated in U.S. airspace, whether on
U.S.-registered civil aircraft or non-U.S.-registered civil aircraft, must
be licensed by the Commission. All ESAA terminals on U.S.-registered civil
aircraft operating outside of U.S. airspace must be licensed by the
Commission, except as provided by section 303(t) of the Communications Act.
(15) For ESAA systems operating over international waters, ESAA operators
will certify that their target space station operators have confirmed that
proposed ESAA operations are within coordinated parameters for adjacent
satellites up to 6 degrees away on the geostationary arc.
(16) Prior to operations within the foreign nation's airspace, the ESAA
operator will ascertain whether the relevant administration has operations
that could be affected by ESAA terminals, and will determine whether that
administration has adopted specific requirements concerning ESAA operations.
When the aircraft enters foreign airspace, the ESAA terminal would be
required to operate under the Commission's rules, or those of the foreign
administration, whichever is more constraining. To the extent that all
relevant administrations have identified geographic areas from which ESAA
operations would not affect their radio operations, ESAA operators would be
free to operate within those identified areas without further action. To the
extent that the foreign administration has not adopted requirements
regarding ESAA operations, ESAA operators would be required to coordinate
their operations with any potentially affected operations.
(b) Applications for ESAA operation in the 14.0-14.5 GHz (Earth-to-space)
band to GSO satellites in the Fixed-Satellite Service shall include, in
addition to the particulars of operation identified on Form 312, and
associated Schedule B, the applicable technical demonstrations in paragraphs
(b)(1), (b)(2) or (b)(3) and the documentation identified in paragraphs
(b)(4) through (b)(8) of this section.
(1) An ESAA applicant proposing to implement a transmitter under paragraph
(a)(1) of this section shall demonstrate that the transmitter meets the
off-axis EIRP spectral-density limits contained in paragraph (a)(1)(i) of
this section. To provide this demonstration, the application shall include
the tables described in paragraph (b)(1)(i) of this section or the
certification described in paragraph (b)(1)(ii) of this section. The ESAA
applicant also shall provide the value N described in paragraph (a)(1)(i)(A)
of this section. An ESAA applicant proposing to implement a transmitter
under paragraph (a)(1)(ii)(A) of this section shall provide the
certifications identified in paragraph (b)(1)(iii) of this section. An ESAA
applicant proposing to implement a transmitter under paragraph (a)(1)(ii)(B)
of this section shall provide the demonstrations identified in paragraph
(b)(1)(iv) of this section.
(i) Any ESAA applicant filing an application pursuant to paragraph (a)(1) of
this section shall file three tables and/or graphs depicting off-axis EIRP
density masks defined by § 25.227(a) and measured off-axis EIRP density
levels of the proposed earth station antenna in the direction of the plane
of the GSO; the co-polarized EIRP density in the elevation plane, that is,
the plane perpendicular to the plane of the GSO; and cross-polarized EIRP
density. Each table shall provide the EIRP density level at increments of
0.1° for angles between 0° and 10° off-axis, and at increments of 5° for
angles between 10° and 180° off-axis.
(A) For purposes of the off-axis EIRP density table in the plane of the GSO,
the off-axis angle is the angle in degrees from the line connecting the
focal point of the antenna to the orbital location of the target satellite,
and the plane of the GSO is determined by the focal point of the antenna and
the line tangent to the arc of the GSO at the orbital position of the target
satellite.
(B) For purposes of the off-axis co-polarized EIRP density table in the
elevation plane, the off-axis angle is the angle in degrees from the line
connecting the focal point of the antenna to the orbital location of the
target satellite, and the elevation plane is defined as the plane
perpendicular to the plane of the GSO defined in paragraph (b)(1)(i)(A) of
this section.
(C) For purposes of the cross-polarized EIRP density table, the off-axis
angle is the angle in degrees from the line connecting the focal point of
the antenna to the orbital location of the target satellite and the plane of
the GSO as defined in paragraph (b)(1)(i)(A) of this section will be used.
(ii) An ESAA applicant shall include a certification, in Schedule B, that
the ESAA antenna conforms to the gain pattern criteria of § 25.209(a) and
(b), that, combined with the maximum input power density calculated from the
EIRP density less the antenna gain, which is entered in Schedule B,
demonstrates that the off-axis EIRP spectral density envelope set forth in
paragraphs (a)(1)(i)(A) through (a)(1)(i)(C) of this section will be met
under the assumption that the antenna is pointed at the target satellite.
(iii) An ESAA applicant proposing to implement a transmitter under paragraph
(a)(1)(ii)(A) of this section shall:
(A) Demonstrate that the total tracking error budget of their antenna is
within 0.2° or less between the orbital location of the target satellite and
the axis of the main lobe of the ESAA antenna. As part of the engineering
analysis, the ESAA applicant must show that the antenna pointing error is
within three sigma () from the mean value, i.e., that there is a 0.997
probability the antenna maintains a pointing error within 0.2°; and
(B) Demonstrate that the antenna tracking system is capable of ceasing
emissions within 100 milliseconds if the angle between the orbital location
of the target satellite and the axis of the main lobe of the ESAA antenna
exceeds 0.5°.
(iv) An ESAA applicant proposing to implement a transmitter under paragraph
(a)(1)(ii)(B) of this section shall:
(A) Declare, in its application, a maximum antenna pointing error and
demonstrate that the maximum antenna pointing error can be achieved without
exceeding the off-axis EIRP spectral-density limits in paragraph (a)(1)(i)
of this section; and
(B) Demonstrate that the ESAA transmitter can detect if the transmitter
exceeds the declared maximum antenna pointing error and can cease
transmission within 100 milliseconds if the angle between the orbital
location of the target satellite and the axis of the main lobe of the ESAA
antenna exceeds the declared maximum antenna pointing error, and will not
resume transmissions until the angle between the orbital location of the
target satellite and the axis of the main lobe of the ESAA antenna is less
than or equal to the declared maximum antenna pointing error.
(2) An ESAA applicant proposing to implement a transmitter under paragraph
(a)(2) of this section and using off-axis EIRP spectral-densities in excess
of the levels in paragraph (a)(1)(i) of this section shall provide the
following certifications and demonstration as exhibits to its earth station
application:
(i) A statement from the target satellite operator certifying that the
proposed operation of the ESAA has the potential to create harmful
interference to satellite networks adjacent to the target satellite(s) that
may be unacceptable.
(ii) A statement from the target satellite operator certifying that the
power density levels that the ESAA applicant provided to the target
satellite operator are consistent with the existing coordination agreements
between its satellite(s) and the adjacent satellite systems within 6° of
orbital separation from its satellite(s).
(iii) A statement from the target satellite operator certifying that it will
include the power-density levels of the ESAA applicant in all future
coordination agreements.
(iv) A demonstration from the ESAA operator that the ESAA system will comply
with all coordination agreements reached by the satellite operator and is
capable of detecting and automatically ceasing emissions within 100
milliseconds when the transmitter exceeds the off-axis EIRP
spectral-densities supplied to the target satellite operator.
(3) An ESAA applicant proposing to implement an ESAA system under paragraph
(a)(3) of this section and using variable power-density control of
individual simultaneously transmitting co-frequency ESAA earth stations in
the same satellite receiving beam shall provide the following certifications
and demonstration as exhibits to its earth station application:
(i) The applicant shall make a detailed showing of the measures it intends
to employ to maintain the effective aggregate EIRP density from all
simultaneously transmitting co-frequency terminals operating with the same
satellite transponder at least 1 dB below the off-axis EIRP density limits
defined in paragraphs (a)(1)(i)(A) through (C) of this section. In this
context the term “effective” means that the resultant co-polarized and
cross-polarized EIRP density experienced by any GSO or non-GSO satellite
shall not exceed that produced by a single ESAA transmitter operating at 1
dB below the limits defined in paragraphs (a)(1)(i)(A) through (C) of this
section. The ESAA applicant also shall provide a detailed showing that one
or more transmitters are capable of automatically ceasing or reducing
emissions within 100 milliseconds of receiving a command from the system's
network control and monitoring center that the aggregate off-axis EIRP
spectral-densities of the transmitter or transmitters exceed the off-axis
EIRP-density limits specified in paragraph (a)(3)(i) of this section. The
International Bureau will place this showing on public notice along with the
application.
(ii) An applicant proposing to implement an ESAA system under paragraph
(a)(3)(ii) of this section that uses off-axis EIRP spectral-densities in
excess of the levels in paragraph (a)(3)(i) of this section shall provide
the following certifications, demonstration and list of satellites as
exhibits to its earth station application:
(A) A detailed showing of the measures the applicant intends to employ to
maintain the effective aggregate EIRP density from all simultaneously
transmitting co-frequency terminals operating with the same satellite
transponder at the EIRP density limits supplied to the target satellite
operator. The International Bureau will place this showing on Public Notice
along with the application.
(B) A statement from the target satellite operator certifying that the
proposed operation of the ESAA has the potential to create harmful
interference to satellite networks adjacent to the target satellite(s) that
may be unacceptable.
(C) A statement from the target satellite operator certifying that the
aggregate power-density levels that the ESAA applicant provided to the
target satellite operator are consistent with the existing coordination
agreements between its satellite(s) and the adjacent satellite systems
within 6° of orbital separation from its satellite(s).
(D) A statement from the target satellite operator certifying that it will
include the aggregate power-density levels of the ESAA applicant in all
future coordination agreements.
(E) A demonstration from the ESAA operator that the ESAA system is capable
of detecting and automatically ceasing emissions within 100 milliseconds
when an individual transmitter exceeds the off-axis EIRP spectral-densities
supplied to the target satellite operator and that the overall system is
capable of shutting off an individual transmitter or the entire system if
the aggregate off-axis EIRP spectral-densities exceed those supplied to the
target satellite operator.
(F) An identification of the specific satellite or satellites with which the
ESAA system will operate.
(4) There shall be an exhibit included with the application describing the
geographic area(s) in which the ESAA will operate.
(5) Any ESAA applicant filing for an ESAA terminal or system and planning to
use a contention protocol shall include in its application a certification
that will comply with the requirements of paragraph (a)(4) of this section.
(6) The point of contact referred to in paragraph (a)(5) of this section
shall be included in the application.
(7) Any ESAA applicant filing for an ESAA terminal or system shall include
in its application a certification that will comply with the requirements of
paragraphs (a)(6), (a)(9), (a)(10), and (a)(11) of this section.
(8) All ESAA applicants shall submit a radio frequency hazard analysis
determining via calculation, simulation, or field measurement whether ESAA
terminals, or classes of terminals, will produce power densities that will
exceed the Commission's radio frequency exposure criteria. ESAA applicants
with ESAA terminals that will exceed the guidelines in § 1.1310 of this
chapter for radio frequency radiation exposure shall provide, with their
environmental assessment, a plan for mitigation of radiation exposure to the
extent required to meet those guidelines. All ESAA licensees shall ensure
installation of ESAA terminals on aircraft by qualified installers who have
an understanding of the antenna's radiation environment and the measures
best suited to maximize protection of the general public and persons
operating the vehicle and equipment. An ESAA terminal exhibiting radiation
exposure levels exceeding 1.0 mW/cm2 in accessible areas, such as at the
exterior surface of the radome, shall have a label attached to the surface
of the terminal warning about the radiation hazard and shall include thereon
a diagram showing the regions around the terminal where the radiation levels
could exceed 1.0 mW/cm2.
(c)(1) Operations of ESAAs in the 14.0-14.2 GHz (Earth-to-space) frequency
band in the radio line-of-sight of the NASA TDRSS facilities on Guam
(latitude 13°36′55″ N, longitude 144°51′22″ E) or White Sands, New Mexico
(latitude 32°20′59″ N, longitude 106°36′31″ W and latitude 32°32′40″ N,
longitude 106°36′48″ W) are subject to coordination with the National
Aeronautics and Space Administration (NASA) through the National
Telecommunications and Information Administration (NTIA) Interdepartment
Radio Advisory Committee (IRAC). Licensees shall notify the International
Bureau once they have completed coordination. Upon receipt of such
notification from a licensee, the International Bureau will issue a public
notice stating that the licensee may commence operations within the
coordination zone in 30 days if no party has opposed the operations.
(2) When NTIA seeks to provide similar protection to future TDRSS sites that
have been coordinated through the IRAC Frequency Assignment Subcommittee
process, NTIA will notify the Commission's International Bureau that the
site is nearing operational status. Upon public notice from the
International Bureau, all Ku-band ESAA licensees shall cease operations in
the 14.0-14.2 GHz band within radio line-of-sight of the new TDRSS site
until the licensees complete coordination with NTIA/IRAC for the new TDRSS
facility. Licensees shall notify the International Bureau once they have
completed coordination for the new TDRSS site. Upon receipt of such
notification from a licensee, the International Bureau will issue a public
notice stating that the licensee may commence operations within the
coordination zone in 30 days if no party has opposed the operations. The
ESAA licensee then will be permitted to commence operations in the 14.0-14.2
GHz band within radio line-of-sight of the new TDRSS site, subject to any
operational constraints developed in the coordination process.
(d)(1) Operations of ESAA in the 14.47-14.5 GHz (Earth-to-space) frequency
band in the radio line-of-sight of radio astronomy service (RAS)
observatories observing in the 14.47-14.5 GHz band are subject to
coordination with the National Science Foundation (NSF). The appropriate NSF
contact point to initiate coordination is Electromagnetic Spectrum Manager,
NSF, 4201 Wilson Blvd., Suite 1045, Arlington VA 22203, fax 703-292-9034,
email esm@nsf.gov. Licensees shall notify the International Bureau once they
have completed coordination. Upon receipt of the coordination agreement from
a licensee, the International Bureau will issue a public notice stating that
the licensee may commence operations within the coordination zone in 30 days
if no party has opposed the operations.
(2) A list of applicable RAS sites and their locations can be found in
§ 25.226(d)(2) Table 1.
(3) When NTIA seeks to provide similar protection to future RAS sites that
have been coordinated through the IRAC Frequency Assignment Subcommittee
process, NTIA will notify the Commission's International Bureau that the
site is nearing operational status. Upon public notice from the
International Bureau, all Ku-band ESAA licensees shall cease operations in
the 14.47-14.5 GHz band within the relevant geographic zone of the new RAS
site until the licensees complete coordination for the new RAS facility.
Licensees shall notify the International Bureau once they have completed
coordination for the new RAS site and shall submit the coordination
agreement to the Commission. Upon receipt of such notification from a
licensee, the International Bureau will issue a public notice stating that
the licensee may commence operations within the coordination zone in 30 days
if no party has opposed the operations. The ESAA licensee then will be
permitted to commence operations in the 14.47-14.5 GHz band within the
relevant coordination distance around the new RAS site, subject to any
operational constraints developed in the coordination process.
[ 78 FR 14927 , Mar. 8, 2013, as amended at 79 FR 8324 , Feb. 12, 2014; 79 FR 26868 , May 12, 2014]
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Goto Section: 25.226 | 25.250
Goto Year: 2014 |
2016
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