Goto Section: 25.139 | 25.142 | Table of Contents

FCC 25.140
Revised as of December 7, 2018
Goto Year:2018 | 2020
  § 25.140   Further requirements for license applications for GSO space station
operation in the FSS and the 17/24 GHz BSS.

   (a)(1) In addition to the information required by § 25.114, an applicant
   for GSO FSS space station operation involving transmission of analog
   video signals must certify that the proposed analog video operation has
   been coordinated with operators of authorized co-frequency space
   stations within six degrees of the requested orbital location.

   (2) In addition to the information required by § 25.114, an applicant
   for GSO FSS space station operation, including applicants proposing
   feeder links for space stations operating in the 17/24 GHz BSS, that
   will be located at an orbital location less than two degrees from the
   assigned location of an authorized co-frequency GSO space station, must
   either certify that the proposed operation has been coordinated with
   the operator of the co-frequency space station or submit an
   interference analysis demonstrating the compatibility of the proposed
   system with the co-frequency space station. Such an analysis must
   include, for each type of radio frequency carrier, the link noise
   budget, modulation parameters, and overall link performance analysis.
   (See Appendices B and C to Licensing of Space Stations in the Domestic
   Fixed-Satellite Service, FCC 83-184, and the following public notices,
   copies of which are available in the Commission's EDOCS database,
   available at https://www.fcc.gov/edocs: DA 03-3863 and DA 04-1708.) The
   provisions in this paragraph do not apply to proposed analog video
   operation, which is subject to the requirement in paragraph (a)(1) of
   this section.

   (3) In addition to the information required by § 25.114, an applicant
   for a GSO FSS space station, including applicants proposing feeder
   links for space stations operating in the 17/24 GHz BSS, must provide
   the following for operation other than analog video operation:

   (i) With respect to proposed operation in the conventional or extended
   C-bands, a certification that downlink EIRP density will not exceed 3
   dBW/4kHz for digital transmissions or 8 dBW/4kHz for analog
   transmissions and that associated uplink operation will not exceed
   applicable EIRP density envelopes in § 25.218 or § 25.221(a)(1) unless
   the non-routine uplink and/or downlink operation is coordinated with
   operators of authorized co-frequency space stations at assigned
   locations within six degrees of the orbital location of the proposed
   space station and except as provided in paragraph (d) of this section.

   (ii) With respect to proposed operation in the conventional or extended
   Ku-bands, a certification that downlink EIRP density will not exceed 14
   dBW/4kHz for digital transmissions or 17 dBW/4kHz for analog
   transmissions and that associated uplink operation will not exceed
   applicable EIRP density envelopes in § 25.218, § 25.222(a)(1),
   § 25.226(a)(1), or § 25.227(a)(1) unless the non-routine uplink and/or
   downlink operation is coordinated with operators of authorized
   co-frequency space stations at assigned locations within six degrees of
   the orbital location of the proposed space station and except as
   provided in paragraph (d) of this section.

   (iii) With respect to proposed operation in the conventional Ka-band, a
   certification that the proposed space station will not generate power
   flux-density at the Earth's surface in excess of −118 dBW/m2/MHz and
   that associated uplink operation will not exceed applicable EIRP
   density envelopes in § 25.138(a) unless the non-routine uplink and/or
   downlink operation is coordinated with operators of authorized
   co-frequency space stations at assigned locations within six degrees of
   the orbital location and except as provided in paragraph (d) of this
   section.

   (iv) With respect to proposed operation in the 24.75-25.25 GHz band
   (Earth-to-space), a certification that the proposed uplink operation
   will not exceed the applicable EIRP density envelopes in § 25.138(a) and
   that the associated space station will not generate a power flux
   density at the Earth's surface in excess of the applicable limits in
   this part, unless the non-routine uplink and/or downlink FSS operation
   is coordinated with operators of authorized co-frequency space stations
   at assigned locations within six degrees of the orbital location and
   except as provided in paragraph (d) of this section.

   (v) With respect to proposed operation in the 4500-4800 MHz
   (space-to-Earth), 6725-7025 MHz (Earth-to-space), 10.70-10.95 GHz
   (space-to-Earth), 11.20-11.45 GHz (space-to-Earth), and/or 12.75-13.25
   GHz (Earth-to-space) bands, a statement that the proposed operation
   will take into account the applicable requirements of Appendix 30B of
   the ITU Radio Regulations (incorporated by reference, see § 25.108) and
   a demonstration that it is compatible with other U.S. ITU filings under
   Appendix 30B.

   (vi) With respect to proposed operation in other FSS bands, an
   interference analysis demonstrating compatibility with any previously
   authorized co-frequency space station at a location two degrees away or
   a certification that the proposed operation has been coordinated with
   the operator(s) of the previously authorized space station(s). If there
   is no previously authorized space station at a location two degrees
   away, the applicant must submit an interference analysis demonstrating
   compatibility with a hypothetical co-frequency space station two
   degrees away with the same receiving and transmitting characteristics
   as the proposed space station.

   (b) Each applicant for a license to operate a space station
   transmitting in the 17.3-17.8 GHz band must provide the following
   information, in addition to that required by § 25.114:

   (1)-(2) [Reserved]

   (3) An applicant for a license to operate a space station transmitting
   in the 17.3-17.8 GHz band must certify that the downlink power flux
   density on the Earth's surface will not exceed the values specified in
   § 25.208(c) and/or (w), or must provide the certification specified in
   § 25.114(d)(15)(ii).

   (4) An applicant for a license to operate a space station transmitting
   in the 17.3-17.8 GHz band to be located less than four degrees from a
   previously licensed or proposed space station transmitting in the
   17.3-17.8 GHz band, must either certify that the proposed operation has
   been coordinated with the operator of the co-frequency space station or
   provide an interference analysis of the kind described in paragraph (a)
   of this section, except that the applicant must demonstrate that its
   proposed network will not cause more interference to the adjacent space
   station transmitting in the 17.3-17.8 GHz band operating in compliance
   with the technical requirements of this part, than if the applicant
   were locate at an orbital separation of four degrees from the
   previously licensed or proposed space station.

   (5) In addition to the requirements of paragraphs (b)(3) and (4) of
   this section, the link budget for any satellite in the 17.3-17.8 GHz
   band (space-to-Earth) must take into account longitudinal
   stationkeeping tolerances. Any applicant for a space station
   transmitting in the 17.3-17.8 GHz band that has reached a coordination
   agreement with an operator of another space station to allow that
   operator to exceed the pfd levels specified in § 25.208(c) or
   § 25.208(w), must use those higher pfd levels for the purpose of this
   showing.

   (c) [Reserved]

   (d) An operator of a GSO FSS space station in the conventional or
   extended C-bands, conventional or extended Ku-bands, 24.75-25.25 GHz
   band (Earth-to-space), or conventional Ka-band may notify the
   Commission of its non-routine transmission levels and be relieved of
   the obligation to coordinate such levels with later applicants and
   petitioners.

   (1) The letter notification must include the downlink off-axis EIRP
   density levels or power flux density levels and/or uplink off-axis EIRP
   density levels, specified per frequency range and space station antenna
   beam, that exceed the relevant routine limits set forth in paragraphs
   (a)(3)(i) through (iii) of this section and § 25.138(a), § 25.218,
   § 25.221(a)(1), § 25.222(a)(1), § 25.226(a)(1), or § 25.227(a)(1).

   (2) The notification will be placed on public notice pursuant to
   § 25.151(a)(11).

   (3) Non-routine transmissions notified pursuant to this paragraph (d)
   need not be coordinated with operators of authorized co-frequency space
   stations that filed their complete applications or petitions after the
   date of filing of the notification with the Commission. Such later
   applicants and petitioners must accept any additional interference
   caused by the notified non-routine transmissions.

   (4) An operator of a replacement space station, as defined in
   § 25.165(e), may operate with non-routine transmission levels to the
   extent permitted under paragraph (d)(3) of this section for the
   replaced space station.

   (e)-(g) [Reserved]

   [ 62 FR 5929 , Feb. 10, 1997, as amended at  68 FR 51504 , Aug. 27, 2003;
    72 FR 50028 , Aug. 29, 2007;  72 FR 60279 , Oct. 24, 2007;  78 FR 8422 ,
   Feb. 6, 2013;  79 FR 8319 , Feb. 12, 2014;  79 FR 44312 , July 31, 2014;  81 FR 55332 , Aug. 18, 2016;  83 FR 34490 , July 20, 2018]

   Effective Date Note: At  79 FR 44312 , July 31, 2014, the amendatory
   instruction for § 25.140 at  79 FR 8319 , Feb. 12, 2014, was corrected by
   revising 19c to read “Revise paragraph (b) introductory text to read as
   follows and remove and reserve paragraphs(b)(1) and (2)” The revised
   paragraph contains information collection and recordkeeping
   requirements and will not become effective until approval has been
   given by the Office of Management and Budget.

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Goto Section: 25.139 | 25.142

Goto Year: 2018 | 2020
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