Sec.  25.138   Blanket Licensing provisions of GSO FSS Earth Stations in the
18.3–18.8 GHz (space-to-Earth), 19.7–20.2 GHz (space-to-Earth), 28.35–28.6 GHz
(Earth-to-space), and 29.25–30.0 GHz (Earth-to-space) bands.

   (a) All applications for a blanket earth station license in the GSO FSS in
   the 18.3–18.8 GHz, 19.7–20.2 GHz, 28.35–28.6 GHz, and 29.25–30.0 GHz bands
   that meet the following requirements shall be routinely processed:

   (1)  GSO  FSS earth station antenna off-axis EIRP spectral density for
   co-polarized signals shall not exceed the following values, within  ±3 ° of
   the GSO arc, under clear sky conditions:
   18.5–25log(Θ)–10log(N) dBW/40kHz for 2.0 ° ≤ Θ ≤ 7 °
   −2.63–10log(N)         dBW/40kHz for 7 ° ≤ Θ ≤ 9.23 °
   21.5–25log(Θ)–10log(N) dBW/40kHz for 9.23 ° ≤ Θ ≤ 48 °
   −10.5–10log(N)         dBW/40kHz for 48 ° < Θ ≤ 180 °

   Where:

   Θ is the angle in degrees from the axis of the main lobe; for systems where
   more than one earth station is expected to transmit simultaneously in the
   same bandwidth, e.g., CDMA systems,

   N is the likely maximum number of simultaneously transmitting co-frequency
   earth stations in the receive beam of the satellite; N=1 for TDMA and FDMA
   systems.

   (2)  GSO  FSS earth station antenna off-axis EIRP spectral density for
   co-polarized  signals  shall  not exceed the following values, for all
   directions other than within  ±3 ° of the GSO arc, under clear sky conditions:
   21.5–25log(Θ)–10log(N) dBW/40kHz for 3.5 ° ≤ Θ ≤ 7 °
   0.37–10log(N)          dBW/40kHz for 7 ° < Θ ≤ 9.23 °
   24.5–25log(Θ)–10log(N) dBW/40kHz for 9.23 ° < Θ ≤ 48 °
   −7.5–10log(N)          dBW/40kHz for 48 ° < Θ ≤ 180 °

   Where:

   Θ: is the angle in degrees from the axis of the main lobe; for systems where
   more than one earth station is expected to transmit simultaneously in the
   same bandwidth, e.g., CDMA systems.

   N: is the likely maximum number of simultaneously transmitting co-frequency
   earth stations in the receive beam of the satellite; N=1 for TDMA and FDMA
   systems.

   (3) The values given in paragraphs (a) (1) and (2) of this section may be
   exceeded by 3 dB, for values of Θ >10 °, provided that the total angular
   range over which this occurs does not exceed 20 ° when measured along both
   sides of the GSO arc.

   (4)  GSO  FSS earth station antenna off-axis EIRP spectral density for
   cross-polarized  signals shall not exceed the following values, in all
   directions relative to the GSO arc, under clear sky conditions:
   8.5–25log(Θ)–10log(N) dBW/40kHz for 2.0 ° ≤ Θ ≤ 7 °
   12.63–10log(N)        dBW/40kHz for 7 ° < Θ ≤ 9.23 °

   Where:

   Θ: is the angle in degrees from the axis of the main lobe; for systems where
   more than one earth station is expected to transmit simultaneously in the
   same bandwidth, e.g., CDMA systems.

   N: is the likely maximum number of simultaneously transmitting co-frequency
   earth stations in the receive beam of the satellite; N=1 for TDMA and FDMA
   systems.

   (5)  For  earth stations employing uplink power control, the values in
   paragraphs (a) (1), (2), and (4) of this section may be exceeded by up to 20
   dB under conditions of uplink fading due to precipitation. The amount of
   such increase in excess of the actual amount of monitored excess attenuation
   over clear sky propagation conditions shall not exceed 1.5 dB or 15 % of the
   actual amount of monitored excess attenuation in dB, whichever is larger,
   with  a  confidence  level of 90 percent except over transient periods
   accounting for no more than 0.5% of the time during which the excess is no
   more than 4.0 dB.

   (6) Power flux-density (PFD) at the Earth's surface produced by emissions
   from a space station for all conditions, including clear sky, and for all
   methods of modulation shall not exceed a level of −118 dBW/m^2 /MHz, in
   addition to the limits specified in  Sec. 25.208 (d).

   (b) Each applicant for earth station license(s) that proposes levels in
   excess of those defined in paragraph (a) of this section shall submit link
   budget analyses of the operations proposed along with a detailed written
   explanation  of how each uplink and each transmitted satellite carrier
   density figure is derived. Applicants shall also submit a narrative summary
   which  must indicate whether there are margin shortfalls in any of the
   current baseline services as a result of the addition of the applicant's
   higher power service, and if so, how the applicant intends to resolve those
   margin short falls. Applicants shall certify that all potentially affected
   parties (i.e., those GSO FSS satellite networks that are 2, 4, and 6 degrees
   apart) acknowledge and do not object to the use of the applicant's higher
   power densities.

   (c) Licensees authorized pursuant to paragraph (b) of this section shall
   bear the burden of coordinating with any future applicants or licensees
   whose proposed compliant operations at 6 degrees or smaller orbital spacing,
   as defined by paragraph (a) of this section, is potentially or actually
   adversely affected by the operation of the non-compliant licensee. If no
   good faith agreement can be reached, however, the non-compliant licensee
   shall reduce its earth station and space station power density levels to be
   compliant with those specified in paragraph (a) of this section.

   (d) The applicant shall provide for each earth station antenna type, a
   series of radiation patterns measured on a production antenna performed on a
   calibrated antenna range and, as a minimum, shall be made at the bottom,
   middle, and top frequencies of the 30 GHz band. The radiation patterns are:

   (1) Co-polarized patterns for each of two orthogonal senses of polarizations
   in two orthogonal planes of the antenna.

   (i) In the azimuth plane, plus and minus 10 degrees and plus and minus 180
   degrees.

   (ii) In the elevation plane, zero to 30 degrees.

   (2) Cross-polarization patterns in the E- and H-planes, plus and minus 10
   degrees.

   (3) Main beam gain.

   (e)  Protection  of  receive  earth  stations  from adjacent satellite
   interference is based on either the antenna performance specified in  Sec. 25.209
   (a) and (b), or the actual receiving earth station antenna performance, if
   actual  performance provides greater isolation from adjacent satellite
   interference. For purposes of insuring the correct level of protection, the
   applicant shall provide, for each earth station antenna type, the antenna
   performance plots for the 20 GHz band, including the format specified in
   paragraph (d) of this section.

   (f)  The  earth  station licensee shall not transmit towards a GSO FSS
   satellite unless it has prior authorization from the satellite operator or a
   space segment vendor authorized by the satellite operator. The specific
   transmission shall be conducted in accordance with the operating protocol
   specified by the satellite operator. The holder of an FCC blanket license
   pursuant  to  this  section  shall be responsible for operation of any
   transceiver to receive GSO FSS service provided by that licensee or provided
   by another party with the blanket licensee's consent. Operators of GSO FSS
   systems shall not transmit communications to or from user transceivers in
   the United States unless such communications are authorized under a service
   contract with the holder of a pertinent FCC blanket license or under a
   service contract with another party with authority for such transceiver
   operation delegated by such a blanket licensee.

   (g) A licensee applying to renew its license must include on FCC Form 405
   the number of constructed earth stations.

   [ 65 FR 54169 , Sept. 7, 2000, as amended at  66 FR 63515 , Dec. 7, 2001;  68 FR 16966 , Apr. 8, 2003;  69 FR 5710 , Feb. 6, 2004]