§ 25.212   Narrowband analog transmissions and digital transmissions in the
GSO Fixed Satellite Service.

   (a) Except as otherwise provided by this part, criteria for
   unacceptable levels of interference caused by other satellite networks
   shall be established on the basis of nominal operating conditions and
   with the objective of minimizing orbital separations between
   satellites.

   (b) Emissions with an occupied bandwidth of less than 2 MHz are not
   protected from interference from wider bandwidth transmissions if the
   r.f. carrier frequency of the narrowband signal is within +-1 MHz of
   one of the frequencies specified in § 25.211(a).

   (c)(1) An earth station that is not subject to licensing under
   § 25.134, § 25.222, § 25.226, or § 25.227 may be routinely licensed for
   analog transmissions in the 14.0-14.5 GHz band with bandwidths up to
   200 kHz (or up to 1 MHz for command carriers at the band edge) if the
   equivalent diameter of the transmitting antenna is 1.2 meters or
   greater, input power spectral density into the antenna will not exceed
   -8 dBW/4 kHz, transmitted satellite carrier EIRP density will not
   exceed 17 dBW/4 kHz, and the application includes certification
   pursuant to § 25.132(a)(1) of conformance with the antenna performance
   standards in § 25.209(a) and (b).

   (2) An earth station that is not subject to licensing under § 25.134,
   § 25.222, § 25.226, or § 25.227 may be routinely licensed for digital
   transmission, including digital video transmission, in the 14.0-14.5
   GHz band if the equivalent diameter of the transmitting antenna is 1.2
   meters or greater, input power spectral density into the antenna will
   not exceed -14 dBW/4 kHz, transmitted satellite carrier EIRP density
   will not exceed +10.0 dBW/4 kHz, and the application includes
   certification pursuant to § 25.132(a)(1) of conformance with the
   antenna performance standards in § 25.209(a) and (b).

   (d) An earth station that is not subject to licensing under § 25.134 or
   § 25.221 may be routinely licensed for digital transmission in the
   5925-6425 MHz band or analog transmission in that band with carrier
   bandwidths up to 200 kHz (or up to 1 MHz for command carriers at the
   band edge) if the equivalent diameter of the transmit antenna is 4.5
   meters or greater, the application includes certification pursuant to
   § 25.132(a)(1) of conformance with the antenna performance standards in
   § 25.209(a) and (b), and maximum power density into the antenna will
   not exceed +0.5 dBW/4 kHz for analog carriers or -2.7 - 10log(N) dBW/4
   kHz for digital carriers. For digital transmission with frequency
   division multiple access (FDMA) or time division multiple access
   (TDMA), N is equal to one. For digital transmission with code division
   multiple access (CDMA), N is the maximum number of co-frequency
   simultaneously transmitting earth stations in the same satellite
   receiving beam.

   (e) An applicant for authority for an earth station in the
   Fixed-Satellite Service proposing to transmit digital signals or analog
   signals in bandwidths up to 200 kHz (or up to 1 MHz for command
   carriers at the band edge) and to operate with transmitted satellite
   carrier EIRP densities, and/or maximum antenna input power densities in
   excess of those specified in applicable provisions of paragraph (c) or
   (d) of this section or operate with a smaller antenna than specified in
   a relevant provision of those paragraphs must comply with the
   requirements in § 25.218 or § 25.220, unless the application is subject
   to licensing pursuant to § 25.221, § 25.222, § 25.226, or § 25.227.

   (f) In the 24.75-25.25 GHz band, an earth station that meets the
   antenna gain pattern requirements set forth in § 25.209(a) and (b) of
   this part may be routinely licensed if the maximum power density into
   the antenna does not exceed 3.5 dBW/MHz.

   [ 58 FR 13421 , Mar. 11, 1993, as amended at  62 FR 5931 , Feb. 10, 1997;
    62 FR 51378 , Oct. 1, 1997;  70 FR 32256 , June 2, 2005;  70 FR 33376 , June
   8, 2005;  72 FR 50030 , Aug. 29, 2007;  73 FR 70902 , Nov. 24, 2008;  78 FR 8428 , Feb. 6, 2013;  79 FR 8323 , Feb. 12, 2014]

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