Goto Section: 25.225 | 25.227 | Table of Contents

FCC 25.226
Revised as of October 2, 2015
Goto Year:2014 | 2016
§ 25.226   Blanket Licensing provisions for domestic, U.S. Vehicle-Mounted Earth
Stations (VMESs) 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) bands and transmitting
in the 14.0-14.5 GHz (Earth-to-space) band, operating with Geostationary
Satellites in the Fixed-Satellite Service.

   (a)  The  following ongoing requirements govern all VMES 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) bands receiving from and transmitting to geostationary
   orbit satellites in the Fixed-Satellite Service. VMES 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)(9) and paragraphs (c), (d), and (e) of this section. Paragraph (b) of
   this section identifies items that shall be included in the application for
   VMES operations to demonstrate that these ongoing requirements will be met.

   (1) The following requirements shall apply to a VMES that uses transmitters
   with off-axis EIRP spectral-densities lower than or equal to the levels in
   paragraph (a)(1)(i) of this section. A VMES, or VMES system, operating under
   this  section  shall  provide a detailed demonstration as described in
   paragraph (b)(1) of this section. The VMES transmitter also shall comply
   with  the  antenna  pointing and cessation of emission requirements in
   paragraphs (a)(1)(ii) and (a)(1)(iii) of this section.

   (i) A VMES system shall not exceed the off-axis EIRP spectral-density limits
   and  conditions defined in paragraphs (a)(1)(i)(A) through (D) of this
   section.

   (A) The off-axis EIRP spectral-density emitted from the VMES, in the plane
   of the geostationary satellite orbit (GSO) as it appears at the particular
   earth station location, shall not exceed the following values:

   15-10log(N)-25logθ dBW/4kHz for 1.5° ≤θ ≤7°

   −6 −10log(N) dBW/4kHz for 7° <θ ≤9.2°

   18 −10log(N)-25logθ dBW/4kHz for 9.2° <θ ≤48°

   −24 −10log(N) dBW/4kHz for 48° <θ ≤85°

   −14 −10log(N) dBW/4kHz 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, 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 VMES networks using frequency division multiple access (FDMA)
   or time division multiple access (TDMA) techniques, N is equal to one. For
   VMES networks using multiple co-frequency transmitters that have the same
   EIRP,  N is the maximum expected number of co-frequency simultaneously
   transmitting VMES earth stations in the same satellite receiving beam. For
   the purpose of this section, the peak EIRP 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 VMES shall not
   exceed the following values:

   18−10log(N)−25logθ dBW/4kHz for 3.0° ≤θ ≤48°

   −24−10log(N) dBW/4kHz for 48° <θ ≤85°

   −14−10log(N) dBW/4kHz for 85° <θ ≤180°

   where θ and N are defined in paragraph (a)(1)(i)(A) of this section. 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 gain 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)   In  all  directions,  the  off-axis  EIRP  spectral-density  for
   cross-polarized signals emitted from the VMES shall not exceed the following
   values:

   5−10log(N)−25logθ dBW/4kHz for 1.8° ≤θ ≤7.0°

   −16−10log(N) dBW/4kHz for 7.0° <θ ≤9.2°

   where θ and N are defined as set forth in paragraph (a)(1)(i)(A) of this
   section. This EIRP spectral-density applies in any plane that includes the
   line connecting the focal point of the antenna to the target satellite.

   (D) For non-circular VMES antennas, the major axis of the antenna shall be
   aligned with the tangent to the arc of the GSO at the orbital location of
   the target satellite, to the extent required to meet the specified off-axis
   EIRP spectral-density criteria.

   (ii) Except for VMES systems operating under paragraph (a)(3), each VMES
   transmitter  must  meet  one  of  the following antenna pointing error
   requirements:

   (A) Each VMES 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 VMES antenna, or

   (B) Each VMES transmitter shall declare a maximum antenna pointing error
   that may be greater than 0.2° provided that the VMES 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) Except for VMES systems operating under paragraph (a)(3), each VMES
   transmitter  must  meet  of  one  the  following cessation of emission
   requirements:

   (A) For VMESs operating under paragraph (a)(1)(ii)(A) of this section, all
   emissions from the VMES 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 VMES antenna exceeds 0.5°, and transmission shall
   not resume until such angle is less than or equal to 0.2°, or

   (B) For VMES transmitters operating under paragraph (a)(1)(ii)(B) of this
   section, all emissions from the VMES 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 VMES 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 a VMES that uses off-axis EIRP
   spectral-densities in excess of the levels in paragraph (a)(1)(i) of this
   section. A VMES, or VMES system, operating under this subsection shall file
   certifications  and  provide  a detailed demonstration as described in
   paragraph (b)(2) of this section.

   (i) The VMES 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 VMES operator shall
   accept  the  power-density levels that would accommodate that adjacent
   satellite.

   (iii)  The  VMES  shall  operate  in accordance with the off-axis EIRP
   spectral-densities that the VMES supplied to the target satellite operator
   in order to obtain the certifications listed in paragraph (b)(2) of this
   section.  The  VMES  shall  automatically  cease  emissions within 100
   milliseconds  if  the  VMES  transmitter  exceeds  the  off-axis  EIRP
   spectral-densities supplied to the target satellite operator.

   (3)  The following requirements shall apply to a VMES system that uses
   variable power-density control of individual simultaneously transmitting
   co-frequency VMES earth stations in the same satellite receiving beam. A
   VMES system operating under this subsection shall file certifications and
   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) of this section, 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) of this section. The individual VMES
   transmitter shall automatically cease emissions within 100 milliseconds if
   the VMES transmitter exceeds the off-axis EIRP-density limits minus 1 dB
   specified above. If one or more VMES transmitters causes the aggregate
   off-axis EIRP-densities to exceed the off-axis EIRP-density limits minus 1
   dB 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. A VMES 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 a VMES that uses off-axis
   EIRP spectral-densities in excess of the levels in paragraph (a)(3)(i) of
   this  section.  A  VMES system operating under this section 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 VMES shall operate at an
   EIRP-density defined in paragraph (a)(3)(i) of this section.

   (B)  The  VMES  shall  operate  in  accordance  with the off-axis EIRP
   spectral-densities that the VMES supplied to the target satellite operator
   in order to obtain the certifications listed in paragraph (b)(3)(ii) of this
   section. The individual VMES terminals shall automatically cease emissions
   within 100 milliseconds if the VMES 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 VMES 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 a VMES 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 VMESs.

   (6) For each VMES transmitter, a record of the vehicle location (i.e.,
   latitude/longitude), transmit frequency, channel bandwidth and satellite
   used shall be time annotated and maintained for a period of not less than
   one (1) year. Records shall be recorded at time intervals no greater than
   every five (5) minutes while the VMES is transmitting. The VMES operator
   shall make this data available upon request to a coordinator, fixed system
   operator, Fixed-Satellite Service system operator, NTIA, or the Commission
   within 24 hours of the request.

   (7)   In  the  10.95-11.2  GHz  (space-to-Earth)  and  11.45-11.7  GHz
   (space-to-Earth) frequency bands VMESs 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)  A VMES terminal 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) 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
   § 25.209(a) and (b) and stationary at the location at which any interference
   occurred.

   (9) Each VMES terminal shall automatically cease transmitting upon the loss
   of  synchronization  or within 5 seconds upon loss of reception of the
   satellite downlink signal, whichever is the shorter timeframe.

   (b) Applications for VMES 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), (2) or (3) of this section and the documentation identified in
   paragraphs (b)(4) through (8) of this section.

   (1) A VMES 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 VMES
   applicant also shall provide the value N described in paragraph (a)(1)(i)(A)
   of this section. A VMES 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. A VMES 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 VMES applicant filing an application pursuant to paragraph (a)(1) of
   this section shall file three tables showing the off-axis EIRP density level
   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) A VMES applicant shall include a certification, in Schedule B, that the
   VMES 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 (C) of this section will be met under the assumption
   that the antenna is pointed at the target satellite. If an antenna proposed
   for  use by the applicant does not comply with the antenna performance
   standards contained in § 25.209(a) and (b), the applicant must provide, as an
   exhibit  to  its  application,  antenna  gain  test  plots pursuant to
   § 25.132(b)(3).

   (iii) A VMES applicant proposing to implement a transmitter under paragraph
   (a)(1)(ii)(A)  of  this section shall provide a certification from the
   equipment  manufacturer  stating that the antenna tracking system will
   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 VMES
   antenna and 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 VMES antenna exceeds
   0.5°.

   (iv) A VMES 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 VMES 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 VMES
   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 VMES antenna is less
   than or equal to the declared maximum antenna pointing error.

   (2) A VMES 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  VMES 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 VMES 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 VMES applicant in all future
   coordination agreements.

   (iv) A demonstration from the VMES operator that the VMES system 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) A VMES applicant proposing to implement VMES system under paragraph
   (a)(3)  of  this  section  and using variable power-density control of
   individual simultaneously transmitting co-frequency VMES 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 VMES transmitter operating at 1
   dB below the limits defined in paragraphs (a)(1)(i)(A) through (C) of this
   section. The applicant also must demonstrate that an individual transmitter
   and the entire VMES system is capable of automatically ceasing emissions
   within 100 milliseconds if the aggregate off-axis EIRP-densities exceed the
   off-axis EIRP-density limits minus 1 dB, as set forth 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 a VMES 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  VMES 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 VMES 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 VMES applicant in all
   future coordination agreements.

   (E) A demonstration from the VMES operator that the VMES 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
   VMES system will operate.

   (iii) The applicant shall acknowledge that it will maintain sufficient
   statistical  and technical information on the individual terminals and
   overall system operation to file a detailed report, one year after license
   issuance, describing the effective aggregate EIRP-density levels resulting
   from the operation of the VMES system.

   (4) There shall be an exhibit included with the application describing the
   geographic area(s) in which the VMESs will operate.

   (5) Any VMES applicant filing for a VMES 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 VMES applicant filing for a VMES terminal or system shall include in
   its application a certification that will comply with the requirements of
   paragraph (a)(6) of this section.

   (8) All VMES applicants shall submit a radio frequency hazard analysis
   determining via calculation, simulation, or field measurement whether VMES
   terminals, or classes of terminals, will produce power densities that will
   exceed the Commission's radio frequency exposure criteria. VMES applicants
   with VMES 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 VMES licensees shall ensure
   installation of VMES terminals on vehicles 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. A VMES 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. All VMES applicants shall demonstrate that their
   VMES terminals are capable of automatically ceasing transmissions upon the
   loss of synchronization or within 5 seconds upon loss of reception of the
   satellite downlink signal, whichever is the shorter timeframe.

   (9) Except for VMES systems operating pursuant to paragraphs (a)(2) and
   (a)(3)(ii) of this section, VMES systems authorized pursuant to this section
   shall be eligible for a license that lists Permitted List as an authorized
   point of communication.

   (c)(1) Operations of VMESs in the 14.0-14.2 GHz (Earth-to-space) frequency
   band  within  125  km  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 VMES licensees shall cease operations in
   the  14.0-14.2  GHz band within 125 km 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 VMES licensee then will be
   permitted to commence operations in the 14.0-14.2 GHz band within 125 km of
   the new TDRSS site, subject to any operational constraints developed in the
   coordination process.

   (d)(1) Operations of VMESs in the 14.47-14.5 GHz (Earth-to-space) frequency
   band  in  the  vicinity 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, e-mail 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) Table 1 provides a list of each applicable RAS site, its location, and
   the applicable coordination zone.

   Table 1—Applicable Radio Astronomy Service (RAS) Facilities and Associated
   Coordination Distances
   Observatory Latitude (north) Longitude (west) Radius (km) of coordination
   zone
   Arecibo, Observatory, Arecibo, PR 18°20′37″ 66°45′11″ Island of Puerto Rico.
   Green Bank, WV 38°25′59″ 79°50′23″ 160.
   Very Large Array, near Socorro, NM 34°04′44″ 107°37′06″ 160.
   Pisgah Astronomical Research Institute, Rosman, NC 35°11′59″ 82°52′19″ 160.
   U of Michigan Radio Astronomy Observatory, Stinchfield Woods, MI 42°23′56″
   83°56′11″ 160.
   Very Long Baseline Array (VLBA) stations:
   Owens Valley, CA 37°13′54″ 118°16′37″ 160*.
   Mauna Kea, HI 19°48′05″ 155°27′20″ 50.
   Brewster, WA 48°07′52″ 119°41′00″
   Kitt Peak, AZ 31°57′23″ 111°36′45″
   Pie Town, NM 34°18′04″ 108°07′09″
   Los Alamos, NM 35°46′30″ 106°14′44″
   Fort Davis, TX 30°38′06″ 103°56′41″
   North Liberty, IA 41°46′17″ 91°34′27″
   Hancock, NH 42°56′01″ 71°59′12″
   St. Croix, VI 17°45′24″ 64°35′01″

   *Owens Valley, CA operates both a VLBA station and single-dish telescopes.

   (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 VMES licensees shall cease operations in
   the 14.47-14.5 GHz band within the relevant geographic zone (160 kms for
   single-dish radio observatories and Very Large Array antenna systems and 50
   kms for Very Long Baseline Array antenna systems) 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
   opposed the operations. The VMES 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.

   (e) VMES licensees shall use Global Positioning Satellite-related or other
   similar position location technology to ensure compliance with paragraphs
   (c) and (d) of this section.

   [ 74 FR 57099 , Nov. 4, 2009, as amended at  78 FR 8429 , Feb. 6, 2013;  78 FR 9604 , Feb. 11, 2013;  79 FR 8324 , Feb. 12, 2014]

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