Goto Section: 25.137 | 25.139 | Table of Contents
FCC 25.138
Revised as of October 1, 2014
Goto Year:2013 |
2015
§ 25.138 Licensing requirements for GSO FSS Earth Stations in the 18.3-18.8
GHz (space-to-Earth), 19.7-20.2 GHz (space-to-Earth), 28.35-28.6 GHz
(Earth-to-space), and 29.25-30.0 GHz (Earth-to-space) bands.
(a) Applications for earth station licenses in the GSO FSS in the
18.3-18.8 GHz, 19.7-20.2 GHz, 28.35-28.6 GHz, and 29.25-30.0 GHz bands
that indicate that the following requirements will be met and include
the information required by paragraph (d) of this section will be
routinely processed:
(1) GSO FSS earth station antenna off-axis EIRP spectral density for
co-polarized signals shall not exceed the following values, within
+-3DEG of the GSO arc, under clear sky conditions:
18.5-25log(th)-10log(N) dBW/40kHz for 2.0DEG <=th <=7DEG
-2.63-10log(N) dBW/40kHz for 7DEG <=th <=9.23DEG
21.5-25log(th)-10log(N) dBW/40kHz for 9.23DEG <=th <=48DEG
-10.5-10log(N) dBW/40kHz for 48DEG 10DEG, provided that the total
angular range over which this occurs does not exceed 20DEG when
measured along both sides of the GSO arc.
(4) GSO FSS earth station antenna off-axis EIRP spectral density for
cross-polarized signals shall not exceed the following values, in all
directions relative to the GSO arc, under clear sky conditions:
8.5-25log(th)-10log(N) dBW/40 kHz For 2.0DEG | 25.208 (d).
(b) An applicant proposing levels in excess of those specified in
paragraph (a) of this section must certify that operators of all
co-frequency GSO FSS space stations within 6 degrees of the proposed
satellite point(s) of communication are aware of the applicant's
proposal to operate with the higher power densities and have stated
that they have no objection to such operation.
(c) Licensees authorized pursuant to paragraph (b) of this section
shall bear the burden of coordinating with any future applicants or
licensees whose proposed compliant operations at 6 degrees or smaller
orbital spacing, as defined by paragraph (a) of this section, is
potentially or actually adversely affected by the operation of the
non-compliant licensee. If no good faith agreement can be reached,
however, the non-compliant licensee shall reduce its earth station and
space station power density levels to be compliant with those specified
in paragraph (a) of this section.
(d)(1) Except as provided in paragraph (d)(2) of this section, the
applicant must provide, for each earth station antenna type, a series
of radiation patterns measured on a production antenna. The
measurements must be performed on a calibrated antenna range and, at a
minimum, must be made at the bottom, middle, and top frequencies of
each requested uplink band. The radiation patterns are:
(i) Co-polarized patterns in the E- and H-planes for linear-polarized
antennas or in two orthogonal planes for circularly-polarized antennas:
(A) In the azimuth plane, plus and minus 10 degrees and plus and minus
180 degrees from beam peak.
(B) In the elevation plane, 0 to 30 degrees.
(ii) Cross-polarization patterns in the E- and H-planes for
linear-polarized antennas or in two orthogonal planes for
circularly-polarized antennas, plus and minus 10 degrees from beam
peak.
(iii) Main beam gain.
(2) For antennas more than 3 meters in diameter that will only be
assembled on-site, on-site measurements may be submitted. If on-site
data is to be submitted, the test frequencies and number of patterns
should follow, where possible, the requirements in paragraph (d)(1) of
this section for at least one frequency. Certification that the on-site
testing has been satisfactorily performed must be included with the
certification filed pursuant to § 25.133(b).
(e) Protection of downlink reception from adjacent satellite
interference is based on either the antenna performance specified in
§ 25.209 (a) and (b), or the actual receiving earth station antenna
performance, if actual performance provides greater isolation from
adjacent satellite interference. For purposes of ensuring the correct
level of protection, the applicant must provide, for each earth station
antenna type, antenna performance plots for the 18.3-18.8 GHz and
19.7-20.2 GHz bands in the format prescribed in paragraph (d) of this
section.
(f) The holder of a blanket license pursuant to this section will be
responsible for operation of any transceiver to receive service
provided by that licensee or provided by another party with the blanket
licensee's consent. Space station operators may not transmit
communications to or from user transceivers in the United States in the
18.3-18.8 GHz, 19.7-20.2 GHz, 28.35-28.6 GHz, or 29.25-30.0 GHz band
unless such communications are authorized under an FCC earth station
license.
(g) A licensee applying for renewal of a license issued pursuant to
this section must specify on FCC Form 312R the number of constructed
earth stations.
[ 65 FR 54169 , Sept. 7, 2000, as amended at 66 FR 63515 , Dec. 7, 2001;
68 FR 16966 , Apr. 8, 2003; 69 FR 5710 , Feb. 6, 2004; 73 FR 70900 , Nov.
24, 2008; 79 FR 8319 , Feb. 12, 2014]
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Goto Section: 25.137 | 25.139
Goto Year: 2013 |
2015
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