§ 25.218   Off-axis EIRP density envelopes for FSS earth stations
transmitting in certain frequency bands.

   (a) This section applies to all applications for Fixed-Satellite
   Service earth stations transmitting to geostationary space stations in
   the C band, Ku band, or extended Ku band, except for:

   (1) ESV, VMES, and ESAA applications, and

   (2) Analog video earth station applications.

   (b) Earth station applications subject to this section are eligible for
   routine processing if they meet the applicable off-axis EIRP density
   envelope set forth in this section below. The terms "conventional Ku
   band" and "extended Ku band are defined in § 25.103.

   (c) C-band analog earth station operations. (1) In the plane of the
   geostationary satellite orbit as it appears at the particular earth
   station location:
   29.5-25log10th dBW/4 kHz For 1.5DEG <=th <=7DEG
   8.5            dBW/4 kHz For 7DEG 7.0DEG. For th greater than
   7.0DEG, the envelope may be exceeded by no more than 10% of the
   sidelobes, provided no individual sidelobe exceeds the envelope given
   above by more than 3 dB.

   (2) In all other directions, or in the plane of the horizon including
   any out-of-plane potential terrestrial interference paths:
   32.5-25log10th dBW/4 kHz For 3DEG <=th <=48DEG
   -9.5           dBW/4 kHz For 48DEG 7.0DEG. For th greater than 7.0DEG, the envelope may be
   exceeded by no more than 10% of the sidelobes, provided no individual
   sidelobe exceeds the envelope given above by more than 3 dB. For
   digital SCPC using frequency division multiple access (FDMA) or time
   division multiple access (TDMA) technique, N is equal to one. For
   digital SCPC using code division multiple access (CDMA) technique, N is
   the maximum number of co-frequency simultaneously transmitting earth
   stations in the same satellite receiving beam.

   (2) In all other directions, or in the plane of the horizon including
   any out-of-plane potential terrestrial interference paths:
   29.3-10log10(N)-25log10th dBW/4 kHz For 3DEG <=th <=48DEG
   -12.7-10log10(N)          dBW/4 kHz For 48DEG 7.0DEG. For th greater than
   7.0DEG, the envelope may be exceeded by no more than 10% of the
   sidelobes, provided no individual sidelobe exceeds the envelope given
   above by more than 3 dB.

   (2) In all other directions, or in the plane of the horizon including
   any out-of-plane potential terrestrial interference paths:
   24-25log10th dBW/4 kHz For 3DEG <=th <=48DEG
   -18          dBW/4 kHz For 48DEG 7.0DEG. For th greater than 7.0DEG, the envelope may be
   exceeded by no more than 10% of the sidelobes, provided no individual
   sidelobe exceeds the envelope given above by more than 3 dB. For
   digital SCPC using frequency division multiple access (FDMA) or time
   division multiple access (TDMA) technique, N is equal to one. For
   digital SCPC using code division multiple access (CDMA) technique, N is
   the maximum number of co-frequency simultaneously transmitting earth
   stations in the same satellite receiving beam.

   (2) In all other directions, or in the plane of the horizon including
   any out-of-plane potential terrestrial interference paths:
   18-10log10(N)-25log10th dBW/4 kHz For 3DEG <=th <=48DEG
   -24-10log10(N)          dBW/4 kHz For 48DEG 7.0DEG. For th greater
   than 7.0DEG, the envelope may be exceeded by no more than 10% of the
   sidelobes, provided no individual sidelobe exceeds the envelope given
   above by more than 3 dB.

   (2) In all other directions, or in the plane of the horizon including
   any out-of-plane potential terrestrial interference paths:
   24-25log10th dBW/4 kHz For 3DEG <=th <=48DEG
   -18          dBW/4 kHz For 48DEG 7.0DEG. For th greater than 7.0DEG, the envelope may be
   exceeded by no more than 10% of the sidelobes, provided no individual
   sidelobe exceeds the envelope given above by more than 3 dB. For
   digital SCPC using frequency division multiple access (FDMA) or time
   division multiple access (TDMA) technique, N is equal to one. For
   digital SCPC using code division multiple access (CDMA) technique, N is
   the maximum number of co-frequency simultaneously transmitting earth
   stations in the same satellite receiving beam.

   (2) In all other directions, or in the plane of the horizon including
   any out-of-plane potential terrestrial interference paths:
   18-10log10(N)-25log10th dBW/4 kHz For 3DEG <=th <=48DEG
   -24-10log10(N)          dBW/4 kHz For 48DEG 73 FR 70902 , Nov. 24, 2008, as amended at  74 FR 57099 , Nov. 4, 2009;
    78 FR 8429 , Feb. 6, 2013;  78 FR 14927 , Mar. 8, 2013;  79 FR 8324 , Feb.
   12, 2014]

   Effective Date Note: At  74 FR 9962 , Mar. 9, 2009, § 25.218, which
   contains information collection and recordkeeping requirements, became
   effective with approval by the Office of Management and Budget for a
   period of 3 years.

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