§  25.212   Narrowband analog transmissions and digital transmissions in the
GSO FSS.

   (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, other than an ESIM, may be routinely licensed
   for analog transmissions in the conventional Ku-band or the extended
   Ku-band with bandwidths up to 200 kHz (or up to 1 MHz for command
   carriers at the band edge) if the input power spectral density into the
   antenna will not exceed −8 dBW/4 kHz, and the application includes
   certification pursuant to § 25.132(a)(1) of conformance with the antenna
   gain performance requirements in § 25.209(a) and (b).

   (2) An earth station may be routinely licensed for digital
   transmission, including digital video transmission, in the conventional
   Ku-band, or, except for an ESIM, in the extended Ku-band, if input
   power spectral density into the antenna will not exceed −14 dBW/4 kHz
   and the application includes certification pursuant to § 25.132(a)(1) of
   conformance with the antenna gain performance requirements in
   § 25.209(a) and (b).

   (d) An individual earth station may be routinely licensed for digital
   transmission in the conventional C-band or, except for an ESIM, in the
   extended C-band, if the applicant certifies conformance with relevant
   antenna performance standards in § 25.209(a) and (b), and power density
   into the antenna will not exceed −2.7 dBW/4 kHz. An individual earth
   station, other than an ESIM, may be routinely licensed for analog
   transmission with carrier bandwidths up to 200 kHz (or up to 1 MHz for
   command carriers at the band edge) in the conventional C-band or the
   extended C-band, if the applicant certifies conformance with relevant
   antenna performance standards in § 25.209(a) and (b), and power density
   into the antenna will not exceed +0.5 dBW/4 kHz.

   (e) An earth station may be routinely licensed for digital transmission
   in the 28.35-28.6 GHz and/or 29.25-30.0 GHz bands if the input power
   spectral density into the antenna will not exceed 3.5 dBW/MHz and the
   application includes certification pursuant to § 25.132(a)(1) of
   conformance with the antenna gain performance requirements in
   § 25.209(a) and (b).

   (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.

   (g) A license application for earth station operation in a network
   using variable power density control of earth stations transmitting
   simultaneously in shared frequencies to the same target satellite
   receiving beam may be routinely processed if the applicant certifies
   that the aggregate off-axis EIRP density from all co-frequency earth
   stations transmitting simultaneously to the same target satellite
   receiving beam, not resulting from colliding data bursts transmitted
   pursuant to a contention protocol, will not exceed the applicable
   off-axis EIRP density limits permissible for a single earth station, as
   specified in § 25.218.

   (h) Applications for authority for fixed earth station operation in the
   conventional C-band, the extended C-band, the conventional Ku-band, the
   extended Ku-band or the conventional Ka-band that do not qualify for
   routine processing under relevant criteria in this section, § 25.211, or
   § 25.218 are subject to the requirements in § 25.220.

   [ 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;  81 FR 55338 , Aug. 18,
   2016;  84 FR 53655 , Oct. 8, 2019]