(a) Applications for earth station licenses 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 indicate that the following requirements will be met and include the information required by paragraph (d) of this section will 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[deg] of the GSO arc, under clear sky conditions:
18.5-25log([thetas])-10log(N dBW/40kHz........... for 2.0[deg]
). <=[thetas] <=7[deg]-2.63-10log(N).............. dBW/40kHz........... for 7[deg]
<=[thetas]
<=9.23[deg]
21.5-25log([thetas])-10log(N dBW/40kHz........... for 9.23[deg]
). <=[thetas]
<=48[deg]-10.5-10log(N).............. dBW/40kHz........... for 48[deg]
<[thetas]
<=180[deg]
Where: [thetas] 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[deg] of the GSO arc, under clear sky conditions:
21.5-25log([thetas])-10log(N dBW/40kHz........... for 3.5[deg]
). <=[thetas] <=7[deg]0.37-10log(N)............... dBW/40kHz........... for 7[deg] <[thetas]
<=9.23[deg]24.5-25log([thetas])-10log(N dBW/40kHz........... for 9.23[deg]
). <[thetas] <=48[deg]-7.5-10log(N)............... dBW/40kHz........... for 48[deg]
<[thetas]
<=180[deg]
Where: [thetas]: 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 [thetas] 10[deg], provided that the total angular range over which this occurs does not exceed 20[deg] 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([thetas])-10log(N)......... dBW/40 kHz............. For.................... 2.0[deg] <[thetas]
<=7.0[deg]-12.63-10log(N)...................... dBW/40 kHz............. For.................... 7.0[deg] <[thetas]
<=9.23[deg]---------------------------------------------------------------------------------------------------------------- where [thetas] 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) [Reserved]
(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) An applicant proposing levels in excess of those specified in paragraph (a) of this section must certify that operators of all co-frequency GSO FSS space stations within 6 degrees of the proposed satellite point(s) of communication are aware of the applicant's proposal to operate with the higher power densities and have stated that they have no objection to such operation.
(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)(1) Except as provided in paragraph (d)(2) of this section, the applicant must provide, for each earth station antenna type, a series of radiation patterns measured on a production antenna. The measurements must be performed on a calibrated antenna range and, at a minimum, must be made at the bottom, middle, and top frequencies of each requested uplink band. The radiation patterns are:
(1) Except as provided in paragraph (d)(2) of this section, the applicant must provide, for each earth station antenna type, a series of radiation patterns measured on a production antenna. The measurements must be performed on a calibrated antenna range and, at a minimum, must be made at the bottom, middle, and top frequencies of each requested uplink band. The radiation patterns are:
(i) Co-polarized patterns in the E- and H-planes for linear-polarized antennas or in two orthogonal planes for circularly-polarized antennas:
(A) In the azimuth plane, plus and minus 10 degrees and plus and minus 180 degrees from beam peak.
(B) In the elevation plane, 0 to 30 degrees.
(ii) Cross-polarization patterns in the E- and H-planes for linear-polarized antennas or in two orthogonal planes for circularly-polarized antennas, plus and minus 10 degrees from beam peak.
(iii) Main beam gain.
(2) For antennas more than 3 meters in diameter that will only be assembled on-site, on-site measurements may be submitted. If on-site data is to be submitted, the test frequencies and number of patterns should follow, where possible, the requirements in paragraph (d)(1) of this section for at least one frequency. Certification that the on-site testing has been satisfactorily performed must be included with the certification filed pursuant to Sec. 25.133(b).
(e) Protection of downlink reception 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 ensuring the correct level of protection, the applicant must provide, for each earth station antenna type, antenna performance plots for the 18.3-18.8 GHz and 19.7-20.2 GHz bands in the format prescribed in paragraph (d) of this section.
(f) The holder of a blanket license pursuant to this section will be responsible for operation of any transceiver to receive service provided by that licensee or provided by another party with the blanket licensee's consent. Space station operators may not transmit communications to or from user transceivers in the United States in the 18.3-18.8 GHz, 19.7-20.2 GHz, 28.35-28.6 GHz, or 29.25-30.0 GHz band unless such communications are authorized under an FCC earth station license.
(g) A licensee applying for renewal of a license issued pursuant to this section must specify on FCC Form 312R 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; 73 FR 70900, Nov. 24, 2008; 79 FR 8319, Feb. 12, 2014]