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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