Goto Section: 25.201 | 25.203 | Table of Contents
FCC 25.202
Revised as of October 1, 2014
Goto Year:2013 |
2015
§ 25.202 Frequencies, frequency tolerance, and emission limits.
(a)(1) Frequency band. The following frequencies are available for use
by the Fixed-Satellite Service. Precise frequencies and bandwidths of
emission shall be assigned on a case-by-case basis. Refer to the U.S.
Table of Frequency Allocations, 47 CFR 2.106, including relevant
footnotes, for band-specific use restrictions and coordination
requirements. Restrictions and coordination conditions not mentioned in
the Table of Frequency Allocations are set forth in the annotations to
the following list:
Space-to-earth (GHz) Earth-to-space (GHz)
3.6-3.65 5.091-5.25
3.65-3.7 5.85-5.925
3.7-4.2 5.925-6.425
4.5-4.8 6.425-6.525
6.7-7.025 6.525-6.7
7.025-7.075 6.7-7.025
10.7-11.7 7.025-7.075
11.7-12.2 12.7-12.75
12.2-12.7 12.75-13.25
18.3-18.58^1 2 13.75-14
18.58-18.8 14-14.2
18.8-19.3 14.2-14.5
19.3-19.7 15.43-15.63
19.7-20.2 17.3-17.8
37.5-40^3 24.75-25.05
40-42 25.05-25.25
^227.5-28.35
^428.35-28.6
^528.6-29.1
^629.1-29.25
^729.25-29.5
^429.5-30.0
47.2-50.2
^1The 18.3-18.58 GHz band is shared co-equally with existing
terrestrial radiocommunication systems until November 19, 2012.
^2FSS is secondary to LMDS in this band.
^3Use of this band by the Fixed-Satellite Service is limited to gateway
earth station operations, provided the licensee under this part obtains
a license under part 101 of this chapter or an agreement from a part
101 licensee for the area in which an earth station is to be located.
Satellite earth station facilities in this band may not be ubiquitously
deployed and may not be used to serve individual consumers.
^4This band is primary for GSO FSS and secondary for NGSO FSS.
^5This band is primary for NGSO FSS and secondary for GSO FSS.
^6This band is primary for MSS feeder links and LMDS hub-to-subscriber
transmission.
^7This band is primary for MSS feeder links and GSO FSS.
(2) [Reserved]
(3) The following frequencies are available for use by the non-voice,
non-geostationary mobile-satellite service:
137-138 MHz: Space-to-Earth
148-150.05 MHz: Earth-to-space
399.9-400.05 MHz: Earth-to-space
400.15-401 MHz: Space-to-Earth
(4)(i) The following frequencies are available for use by the 1.6/2.4
GHz Mobile-Satellite Service:
1610-1626.5 MHz: User-to-Satellite Link
1613.8-1626.5 MHz: Satellite-to-User Link (secondary)
2483.5-2500 MHz: Satellite-to-User Link
(ii) The following frequencies are available for use by the 2 GHz
Mobile-Satellite Service: 2000-2020 MHz: User-to-Satellite Link;
2180-2200 MHz: Satellite-to-User Link.
(iii)(A) The following frequencies are available for use by the 1.5/1.6
GHz Mobile-Satellite Service:
1525-1559 MHz: space-to-Earth
1626.5-1660.5 MHz: Earth-to-space
(B) The use of the frequencies 1544-1545 MHz and 1645.5-1646.5 MHz is
limited to distress and safety communications.
(5) The following frequencies are available for use by the
inter-satellite service:
22.55-23.00 GHz
23.00-23.55 GHz
24.45-24.65 GHz
24.65-24.75 GHz
54.25-56.90 GHz
57.00-58.20 GHz
65.00-71.00 GHz
(6) The following frequencies are available for use by the Satellite
Digital Audio Radio Service (SDARS), and for any associated terrestrial
repeaters: 2320-2345 MHz (space-to-Earth)
(7) The following frequencies are available for use by the Direct
Broadcast Satellite service:
12.2-12.7 GHz: Space-to-Earth.
12.2-12.7 GHz: Space-to-Earth.
(8) The following frequencies are available for use by ESVs:
3700-4200 MHz (space-to-Earth)
5925-6425 MHz (Earth-to-space)
10.95-11.2 GHz (space-to-Earth)
11.45-11.7 GHz (space-to-Earth)
11.7-12.2 GHz (space-to-Earth)
14.0-14.5 GHz (Earth-to-space)
ESVs shall be authorized and coordinated as set forth in § § 25.221 and
25.222. ESV operators, collectively, may coordinate up to 180 megahertz
of spectrum in the 5925-6425 MHz (Earth-to-space) band for all ESV
operations at any given location subject to coordination.
(9) The following frequencies are available for use by the
Broadcasting-Satellite Service after 1 April 2007:
17.3-17.7 GHz (space-to-Earth)
17.7-17.8 GHz (space-to-Earth)
Note 1 to paragraph (a)(9): Use of the 17.3-17.7 GHz band by the
broadcasting-satellite service is limited to geostationary satellite
orbit systems.
Note 2 to paragraph (a)(9): Use of the 17.7-17.8 GHz band
(space-to-Earth) by the broadcasting-satellite service is limited to
transmissions from geostationary satellite orbit systems to receiving
earth stations located outside of the United States and its
Possessions. In the United States and its Possessions, the 17.7-17.8
GHz band is allocated on a primary basis to the Fixed Service.
(10)(i) The following frequencies are available for use by
Vehicle-Mounted Earth Stations (VMESs):
10.95-11.2GHz (space-to-Earth)
11.45-11.7GHz (space-to-Earth)
11.7-12.2GHz (space-to-Earth)
14.0-14.5GHz (Earth-to-space)
(ii) VMESs shall be authorized as set forth in § 25.226.
(11)(i) The following frequencies are available for use by Earth
Stations Aboard Aircraft (ESAA):
10.95-11.2 GHz (space-to-Earth)
11.45-11.7 GHz (space-to-Earth)
11.7-12.2 GHz (space-to-Earth)
14.0-14.5 GHz (Earth-to-space)
(ii) ESAAs shall be authorized as set forth in § 25.227.
(b) Other frequencies and associated bandwidths of emission may be
assigned on a case-by-case basis to space systems under this part in
conformance with § 2.106 of this chapter and the Commission's rules and
policies.
(c) [Reserved]
(d) Frequency tolerance, Earth stations. The carrier frequency of each
earth station transmitter authorized in these services shall be
maintained within 0.001 percent of the reference frequency.
(e) Frequency tolerance, space stations. The carrier frequency of each
space station transmitter authorized in these services shall be
maintained within 0.002 percent of the reference frequency.
(f) Emission limitations. Except for SDARS terrestrial repeaters, the
mean power of emissions shall be attenuated below the mean output power
of the transmitter in accordance with the schedule set forth in
paragraphs (f)(1) through (f)(4) of this section. The out-of-band
emissions of SDARS terrestrial repeaters shall be attenuated in
accordance with the schedule set forth in paragraph (h) of this
section.
(1) In any 4 kHz band, the center frequency of which is removed from
the assigned frequency by more than 50 percent up to and including 100
percent of the authorized bandwidth: 25 dB;
(2) In any 4 kHz band, the center frequency of which is removed from
the assigned frequency by more than 100 percent up to and including 250
percent of the authorized bandwidth: 35 dB;
(3) In any 4 kHz band, the center frequency of which is removed from
the assigned frequency by more than 250 percent of the authorized
bandwidth: An amount equal to 43 dB plus 10 times the logarithm (to the
base 10) of the transmitter power in watts;
(4) In any event, when an emission outside of the authorized bandwidth
causes harmful interference, the Commission may, at its discretion,
require greater attenuation than specified in paragraphs (f) (1), (2)
and (3) of this section.
(g)Telemetry, tracking and command functions must be conducted at
either or both edges of the allocated band(s). Frequencies,
polarization and coding shall be selected to minimize interference into
other satellite networks and within their own satellite system.
(h) Out-of-band emission limitations for SDARS terrestrial repeaters.
(1) Any SDARS terrestrial repeater operating at a power level greater
than 2-watt average EIRP is required to attenuate its out-of-band
emissions below the transmitter power P by a factor of not less than 90
+ 10 log (P) dB in a 1-megahertz bandwidth outside the 2320-2345 MHz
band, where P is average transmitter output power in watts.
(2) Any SDARS terrestrial repeater operating at a power level equal to
or less than 2-watt average EIRP is required to attenuate its
out-of-band emissions below the transmitter power P by a factor of not
less than 75 + 10 log (P) dB in a 1-megahertz bandwidth outside the
2320-2345 MHz band, where P is average transmitter output power in
watts.
(3) SDARS repeaters are permitted to attenuate out-of-band emissions
less than the levels specified in paragraphs (h)(1) and (h)(2), of this
section unless a potentially affected WCS licensee provides written
notice that it intends to commence commercial service within the
following 365 days. Starting 180 days after receipt of such written
notice, SDARS repeaters within the area notified by the potentially
affected WCS licensee must attenuate out-of-band emissions to the
levels specified in paragraphs (h)(1) and (h)(2) of this section.
(4) For the purpose of this section, a WCS licensee is potentially
affected if it is authorized to operate a base station in the 2305-2315
MHz or 2350-2360 MHz bands within 25 kilometers of a repeater seeking
to operate with an out of band emission attenuation factor less than
those prescribed in paragraphs (h)(1) or (2) of this section.
(i) The WCS licensee is authorized to operate a base station in the
2305-2315 MHz or 2350-2360 MHz bands in the same Major Economic Area
(MEA) as that in which a SDARS terrestrial repeater is located.
(ii) The WCS licensee is authorized to operate a base station in the
2315-2320 MHz or 2345-2350 MHz bands in the same Regional Economic Area
Grouping (REAG) as that in which a SDARS terrestrial repeater is
located.
(iii) A SDARS terrestrial repeater is located within 5 kilometers of
the boundary of an MEA or REAG in which the WCS licensee is authorized
to operate a WCS base station.
[ 30 FR 7176 , May 28, 1965]
Editorial Note: For Federal Register citations affecting § 25.202, see
the List of CFR Sections Affected, which appears in the Finding Aids
section of the printed volume and at www.fdsys.gov.
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Goto Section: 25.201 | 25.203
Goto Year: 2013 |
2015
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