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Federal Register / Vol. 86, No. 19 / Monday, February 1, 2021 / Proposed Rules
filed pursuant to paragraph m1 or n1 of this section, VMES applications filed pursuant to paragraph m1 or n1 of this section, and ESAA
applications filed pursuant to paragraph m1 or n1 of this section, may designate the Permitted Space Station List as a point of communication. Once such an application is granted, the earth station operator may communicate with any space station on the Permitted Space Station List, provided that the operation is consistent with the technical parameters and conditions in the earth station license and any limitations placed on the space station authorization or noted in the Permitted Space Station List.
2 Notwithstanding paragraph k1
of this section, an earth station that would receive signals in the 17.720.2
GHz band may not communicate with a space station on the Permitted Space Station List in that band until the space station operator has completed coordination under Footnote US334 to 2.106 of this chapter.

7. Amend 25.117 by revising paragraph d2v to read as follows:
25.117

Modification of station license.

d
2
v Any operator of a space station transmitting in the 17.317.8 GHz band, whose license is conditioned to operate at less than the power level otherwise permitted by 25.140a3iii and/or b3, and is conditioned to accept interference from a neighboring 17/24
GHz BSS space station, may file a modification application to remove those two conditions in the event that the license for that neighboring space station is cancelled or surrendered. In the event that two or more such modification applications are filed, and those applications are mutually exclusive, the modification applications will be considered on a first-come, firstserved basis pursuant to the procedure set forth in 25.158.

8. Amend 25.140 by revising paragraphs a2, a3iii, b3
through 5, and d introductory text to read as follows:
25.140 Further requirements for license applications for GSO space station operation in the FSS and the 17/24 GHz BSS.

a
2 In addition to the information required by 25.114, an applicant for GSO FSS space station operation, including applicants proposing feeder
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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 cofrequency 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 FixedSatellite Service, FCC 83184, and the following public notices, copies of which are available in the Commissions EDOCS database, available at https
www.fcc.gov/edocs: DA 033863 and DA 041708. The provisions in this paragraph do not apply to proposed analog video operation, which is subject to the requirement in paragraph a1 of this section. Proposed GSO FSS spaceto-Earth transmissions in the 17.317.8
GHz band are subject to the requirements of paragraphs b4 and 5 of this section with respect to possible interference into 17/24 GHz BSS networks. Proposed GSO FSS
space-to-Earth transmissions in the 17.317.8 GHz band are subject to the requirements of 25.264 with respect to possible interference to the reception of DBS feeder link transmissions Earth-tospace in this band.
3
iii With respect to proposed operation in the conventional or extended Ka-bands, a certification that the proposed space station will not generate power flux density at the Earths surface in excess of the limits in paragraphs aiiiA and B of this section, and that associated uplink operation will not exceed applicable EIRP density envelopes in 25.218i 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.
A 118 dBW/m2/MHz, except as provided in paragraph aiiiB of this section.
B For space-to-Earth FSS
transmissions in the 17.318.8 GHz band in the region of the contiguous United States, located west of 100 West Longitude: 121 dBW/m2/MHz.

b

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3 An applicant for a license to operate a 17/24 GHz BSS space station transmitting in the 17.317.8 GHz band must certify that the downlink power flux density on the Earths surface will not exceed the regional power flux density limits given in paragraphs b3i through iv of this section, or must provide the certification specified in 25.114d15ii:
i In the region of the contiguous United States, located south of 38
North Latitude and east of 100 West Longitude: 115 dBW/m2/MHz.
ii In the region of the contiguous United States, located north of 38
North Latitude and east of 100 West Longitude: 118 dBW/m2/MHz.
iii In the region of the contiguous United States, located west of 100 West Longitude: 121 dBW/m2/MHz.
iv For all regions outside of the contiguous United States including Alaska and Hawaii: 115 dBW/m2/
MHz.
4 Except among applicants for FSS
space-to-Earth transmissions in the 17.317.8 GHz band, where the requirements of paragraph a2 of this section apply, a 17/24 GHz BSS or FSS
applicant for a space station transmitting in the 17.317.8 GHz band to be located less than four degrees from a previously authorized 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 cofrequency 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 17.317.8 GHz band operating in compliance with the technical requirements of this part, than if the applicant were located at an orbital separation of four degrees from the previously licensed or proposed space station.
5 In addition to the requirements of paragraphs b3 and 4 of this section, the link budget for any satellite transmitting in the 17.317.8 GHz band space-to-Earth must take into account longitudinal station-keeping tolerances.
Any applicant for a space station transmitting in the 17.317.8 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 25.140a3iii or b3, must use those higher pfd levels for the purpose of this showing.

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