Goto Section: 25.221 | 25.223 | Table of Contents

FCC 25.222
Revised as of October 1, 2009
Goto Year:2008 | 2010
  §  25.222   Blanket Licensing provisions for Earth Stations on Vessels (ESVs)
receiving in the 10.95–11.2 GHz (space-to-Earth), 11.45–11.7 GHz
(space-to-Earth), 11.7–12.2 GHz (space-to-Earth) frequency bands and
transmitting in the 14.0–14.5 GHz (Earth-to-space) frequency band, operating
with Geostationary Satellites in the Fixed-Satellite Service.

   Link to an amendment published at  74 FR 47105 , Sept. 15, 2009.

   (a) All applications for licenses for ESVs receiving in the 10.95–11.2
   GHz (space-to-Earth), 11.45–11.7 GHz (space-to-Earth), 11.7–12.2 GHz
   (space-to-Earth) frequency bands, and transmitting in the 14.0–14.5 GHz
   (Earth-to-space) frequency band, to Geostationary Satellites in the
   fixed-satellite service shall provide sufficient data to demonstrate
   that the ESV operations meet the following criteria, which are ongoing
   requirements that govern all ESV licensees and operations in these
   bands:

   (1) The off-axis EIRP spectral density for co-polarized signals,
   emitted from the ESV in the plane of the geostationary satellite orbit
   as it appears at the particular earth station location ( i.e. , the
   plane determined by the focal point of the antenna and the line tangent
   to the arc of the geostationary satellite orbit at the position of the
   target satellite), shall not exceed the following values:

   15 − 25log(Θ) − 10log(N) dBW/4kHz for 1.25° ≤ Θ ≤ 7.0°

   −6 − 10 log(N) dBW/4kHz for 7.0° < Θ ≤ 9.2°

   18 − 25log(Θ) − 10log(N) dBW/4kHz for 9.2° < Θ ≤ 48°

   −24 − 10log(N) dBW/4kHz for 48° < Θ ≤ 180°

   where Θ is the angle in degrees from the axis of the main lobe. For an
   ESV network using frequency division multiple access (FDMA) or time
   division multiple access (TDMA) technique, N is equal to one. For an
   ESV network 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, the off-axis EIRP spectral density for
   co-polarized signals emitted from the ESV shall not exceed the
   following values:

   18 − 25log(Θ) − 10log(N) dBW/4kHz for 1.25° ≤ Θ ≤ 48°

   −24 − 10log(N) dBW/4kHz for 48° < Θ ≤ 180°

   where Θ and N are defined as set forth in paragraph (a)(1) of this
   section.

   (3) For Θ>7°, the values given in paragraphs (a)(1) of this section may
   be exceeded by no more than 10% of the sidelobes, provided no
   individual sidelobe exceeds the criteria given by more than 3 dB.

   (4) In all directions, the off-axis EIRP spectral density for
   cross-polarized signals emitted from the ESV shall not exceed the
   following values:

   5 − 25log(Θ) − 10log(N) dBW/4kHz for 1.8° ≤ Θ ≤ 7°

   −16 − 10log(N) dBW/4kHz for 7° ≤ Θ ≤ 9.2°

   where Θ and N are defined as set forth in paragraph (a)(1) of this
   section.

   (5) For non-circular ESV antennas, the major axis of the antenna will
   be aligned with the tangent to the geostationary satellite orbital arc
   at the target satellite point, to the extent required to meet specified
   off-axis e.i.r.p. criteria.

   (6) A pointing error of less than 0.2°, between the orbital location of
   the target satellite and the axis of the main lobe of the ESV antenna.

   (7) All emissions from the ESV shall automatically cease within 100
   milliseconds if the angle between the orbital location of the target
   satellite and the axis of the main lobe of the ESV antenna exceeds
   0.5°, and transmission will not resume until such angle is less than
   0.2°.

   (8) There shall be a point of contact in the United States, with phone
   number and address included with the application, available 24 hours a
   day, seven days a week, with authority and ability to cease all
   emissions from the ESVs, either directly or through the facilities of a
   U.S. Hub or a Hub located in another country with which the U.S. has a
   bilateral agreement that enables such cessation of emissions.

   (9) ESVs that exceed the radiation guidelines of § 1.1310 of this
   chapter, Radiofrequency radiation exposure limits, must provide, with
   their environmental assessment, a plan for mitigation of radiation
   exposure to the extent required to meet those guidelines.

   (10) There shall be an exhibit included with the application describing
   the geographic area(s) in which the ESVs will operate.

   (b) Applications for ESV operation in the 14.0–14.5 GHz
   (Earth-to-space) to geostationary satellites in the fixed-satellite
   service must include, in addition to the particulars of operation
   identified on Form 312 and associated Schedule B, the following data
   for each earth station antenna type:

   (1) A series of e.i.r.p. density charts or tables, calculated for a
   production earth station antenna, based on measurements taken on a
   calibrated antenna range at 14.25 GHz, with the off-axis e.i.r.p.
   envelope set forth in paragraphs (a)(1) through (a)(4) of this section
   superimposed, as follows:

   (i) Showing off-axis co-polarized e.i.r.p. spectral density in the
   azimuth plane, for off-axis angles from minus 10° to plus 10° and from
   minus 180° to plus 180°.

   (ii) Showing off-axis co-polarized e.i.r.p. spectral density in the
   elevation plane, at off-axis angles from 0° to plus 30°.

   (iii) Showing off-axis cross-polarized e.i.r.p. spectral density in the
   azimuth plane, at off-axis angles from minus 10° to plus 10°.

   (iv) Showing off-axis cross-polarized e.i.r.p. spectral density in the
   elevation plane, at off-axis angles from minus 10° to plus 10°; or

   (2) A series of gain charts or tables, for a production earth station
   antenna, measured on a calibrated antenna range at 14.25 GHz, with the
   Earth station antenna gain envelope set forth in § 25.209(a) and (b)
   superimposed, for the same planes and ranges enumerated in paragraphs
   (b)(1)(i) through (b)(1)(iv) of this section, that, combined with input
   power density entered in Schedule B, demonstrates that off-axis
   e.i.r.p. spectral density envelope set forth in paragraphs (a)(1)
   through (a)(4) of this section will be met; or

   (3) A certification that the ESV antenna conforms to the gain pattern
   criteria of § 25.209(a) and (b), that, combined with input power density
   entered in Schedule B, demonstrates that the off-axis e.i.r.p. spectral
   density envelope set forth in paragraphs (a)(1) through (a)(4) of this
   section will be met.

   (c) ESVs receiving in the 10.95–11.2 GHz (space-to-Earth), 11.45–11.7
   GHz (space-to-Earth), 11.7–12.2 GHz (space-to-Earth) frequency bands,
   and transmitting in the 14.0–14.5 GHz (Earth-to-space) frequency band
   shall operate with the following provisions:

   (1) For each ESV transmitter a record of the ship location ( i.e. ,
   latitude/longitude), transmit frequency, channel bandwidth and
   satellite used shall be time annotated and maintained for a period of
   not less than 1 year. Records will be recorded at time intervals no
   greater than every 20 minutes while the ESV is transmitting. The ESV
   operator will make this data available upon request to a coordinator,
   fixed system operator, fixed-satellite system operator, NTIA, or the
   Commission within 24 hours of the request.

   (2) ESV operators communicating with vessels of foreign registry must
   maintain detailed information on each vessel's country of registry and
   a point of contact for the relevant administration responsible for
   licensing ESVs.

   (3) ESV operators shall control all ESVs by a Hub earth station located
   in the United States, except that an ESV on U.S.-registered vessels may
   operate under control of a Hub earth station location outside the
   United States provided the ESV operator maintains a point of contact
   within the United States that will have the capability and authority to
   cause an ESV on a U.S.-registered vessel to cease transmitting if
   necessary.

   (d) Operations of ESVs in the 14.0–14.2 GHz (Earth-to-space) frequency
   band within 125 km of the NASA TDRSS facilities on Guam (located at
   latitude: 13° 36' 55" N, longitude 144° 51' 22" E) or White Sands, New
   Mexico (latitude: 32° 20' 59" N, longitude 106° 36' 31" W and latitude:
   32° 32' 40" N, longitude 106° 36' 48" W) are subject to coordination
   through the National Telecommunications and Information Administration
   (NTIA) Interdepartment Radio Advisory Committee (IRAC). When NTIA seeks
   to provide similar protection to future TDRSS sites that have been
   coordinated through the IRAC Frequency Assignment Subcommittee process,
   NTIA will notify the Commission that the site is nearing operational
   status. Upon public notice from the Commission, all Ku-band ESV
   operators must cease operations in the 14.0–14.2 GHz band within 125 km
   of the new TDRSS site until after NTIA/IRAC coordination for the new
   TDRSS facility is complete. ESV operations will then again be permitted
   to operate in the 14.0–14.2 GHz band within 125 km of the new TDRSS
   site, subject to any operational constraints developed in the
   coordination process.

   (e) Operations of ESVs in the 14.47–14.5 GHz (Earth-to-space) frequency
   band within a) 45 km of the radio observatory on St. Croix, Virgin
   Islands (latitude 17° 46' N, longitude 64° 35' W); b) 125 km of the
   radio observatory on Mauna Kea, Hawaii (at latitude 19° 48' N,
   longitude 155° 28' W); and c) 90 km of the Arecibo Observatory on
   Puerto Rico (latitude 18° 20' 46" W, longitude 66° 45' 11" N) are
   subject to coordination through the National Telecommunications and
   Information Administration (NTIA) Interdepartment Radio Advisory
   Committee (IRAC).

   (f) In the 10.95–11.2 GHz (space-to-Earth) and 11.45–11.7 GHz
   (space-to-Earth) frequency bands ESVs shall not claim protection from
   interference from any authorized terrestrial stations to which
   frequencies are either already assigned, or may be assigned in the
   future.

   [ 70 FR 4786 , Jan. 31, 2005, as amended at  70 FR 33377 , June 8, 2005]


Goto Section: 25.221 | 25.223

Goto Year: 2008 | 2010
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