§ 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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