§ 25.201 47 CFR Ch. I (10–1–99 Edition)
(c) In order to be granted certifi- ing harmful interference from such sta- cation, a transmitter shall comply tions in the fixed or mobile service. with the technical specifications in Earth station. A station located either this part. In addition, mobile earth sat- on the Earth’s surface or within the ellite terminals for use in the band of major portion of the Earth’s atmos- 1610–1626.5 MHz shall meet a specific phere intended for communication: out-of-band emissions limit. Emissions (a) With one or more space stations; in the band 1559–1605 MHz shall be lim- or ited to ¥70 dBW/MHz averaged over any 20 millisecond period for wideband (b) With one or more stations of the signals, and a standard of ¥80 dBW same kind by means of one or more re- across within the measurement band- flecting satellites or other objects in width of 700 Hz or less for narrowband space. signals. Fixed earth station. An earth station (d) Licensees and manufacturers are intended to be used at a specified fixed subject to the radiofrequency radiation point. exposure requirements specified in Fixed-Satellite Service. A §§ 1.1307(b), 2.1091 and 2.1093 of this radiocommunication service between chapter, as appropriate. Applications earth stations at given positions, when for equipment authorization of mobile one or more satellites are used; the or portable devices operating under given position may be a specified fixed this section shall contain a statement point or any fixed point within speci- confirming compliance with these re- fied areas; in some cases this service quirements for both fundamental emis- includes satellite-to-satellite links, sions and unwanted emissions. Tech- which may also be operated in the nical information showing the basis for this statement shall be submitted to inter-satellite service; the fixed-sat- the Commission upon request. ellite service may also include feeder (e) Equipment authorizations issued links of other space pursuant to this section will be condi- radiocommunication services. (RR) tioned on the equipment meeting all Geostationary satellite. A geosynchro- relevant technical requirements that nous satellite whose circular and direct are adopted by the Commission in im- orbit lies in the plane of the Earth’s plementing the GMPCS Arrangements. equator and which thus remains fixed [64 FR 4997, Feb. 2, 1999] relative to the Earth; by extension, a satellite which remains approximately § 25.201 Definitions. fixed relative to the Earth. Active satellite. An earth satellite car- Inter-Satellite Service. A rying a station intended to transmit or radiocommunication service providing re-transmit radiocommunication sig- links between artificial earth sat- nals. ellites. Base Earth Station. An earth station Land Earth Station. An earth station in the fixed-satellite service or, in in the fixed-satellite service or, in some cases, in the land mobile-satellite some cases, in the mobile-satellite service, located at a specified fixed service, located at a specified fixed point or within a specified area on land point or within a specified area on land to provide a feeder link for the land to provide a feeder link for the mobile- mobile-satellite service. (RR) satellite service. (RR) For the pur- Coordination distance. Land Mobile Earth Station. A mobile poses of this part, the expression ‘‘co- earth station in the land mobile-sat- ordination distance’’ means the dis- ellite service capable of surface move- tance from an earth station, within which there is a possibility of the use ment within the geographical limits of of a given transmitting frequency at a country or continent. (RR) this earth station causing harmful in- Mobile earth station. An earth station terference to stations in the fixed or intended to be used while in motion or mobile service, sharing the same band, during halts at unspecified points. or of the use of a given frequency for Mobile-Satellite Service. A reception at this earth station receiv- radiocommunication service:
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(1) Between mobile earth stations command. These functions will nor- and one or more space stations, or be- mally be provided within the service in tween space stations used by this serv- which the space station is operating. ice; or Space radiocommunication. Any (2) Between mobile earth stations, by radiocommunication involving the use means of one or more space stations. of one or more space stations or the This service may also include feeder use of one or more reflecting satellites links necessary for its operation. (RR) or other objects in space. Non-Voice, Non-Geostationary Mobile- Space station. A station located on an Satellite Service. A mobile-satellite serv- object which is beyond, is intended to ice reserved for use by non-geo- go beyond, or has been beyond, the stationary satellites in the provision of major portion of the Earth’s atmos- non-voice communications which may phere. include satellite links between land Space system. Any group of cooper- earth stations at fixed locations. ating earth stations and/or space sta- 1.6/2.4 GHz Mobile-Satellite Service. A tions employing space mobile-satellite service that operates radiocommunication for specific pur- in the 1610–1626.5 MHz and 2483.5–2500 poses. MHz frequency bands, or in any portion Space telecommand. The use of thereof. radiocommunication for the trans- Passive satellite. An earth satellite in- mission of signals to a space station to tended to transmit radio communica- initiate, modify or terminate function tion signals by reflection. of the equipment on a space object, in- Protection areas. The geographic re- cluding the space station. gions on the surface of the Earth where United States Department of Defense Space telemetering. The use of tele- (‘‘DoD’’) meteorological satellite sys- metering for the transmission from a tems or National Oceanic and Atmos- space station of results of measure- pheric Administration (‘‘NOAA’’) mete- ments made in a spacecraft, including orological satellite systems, or both those relating to the functioning of the such systems, are receiving signals spacecraft. from low earth orbiting satellites. Space tracking. Determination of the Radiodetermination-Satellite Service. A orbit, velocity or instantaneous posi- radiocommunication service for the tion of an object in space by means of purpose of radiodetermination involv- radiodetermination, excluding primary ing the use of one of more space sta- radar, for the purpose of following the tions. This service may also include movement of the object. feeder links necessary for its own oper- Terrestrial radiocommunication. Any ation. (RR) radiocommunication other than space Satellite Digital Audio Radio Service radiocommunication or radio astron- (‘‘DARS’’). A radiocommunication omy. service in which audio programming is Terrestrial station. A station effecting digitally transmitted by one or more terrestrial radiocommunication. space stations directly to fixed, mobile, [30 FR 7176, May 28, 1965, as amended at 36 and/or portable stations, and which FR 2562, Feb. 6, 1971; 48 FR 40254, Sept. 6, may involve complementary repeating 1983; 51 FR 18445, May 20, 1986; 54 FR 49993, terrestrial transmitters, telemetry, Dec. 4, 1989; 56 FR 42706, Aug. 29, 1991; 58 FR tracking and control facilities. 68059, Dec. 23, 1993; 59 FR 53329, Oct. 21, 1994; Satellite system. A space system using 62 FR 11105, Mar. 11, 1997; 62 FR 59296, Nov. 3, one or more artificial earth satellites. 1997] Spacecraft. A man-made vehicle which is intended to go beyond the § 25.202 Frequencies, frequency toler- major portion of the Earth’s atmos- ance and emission limitations. phere. (a)(1) Frequency bands. The following Space operation service. A frequencies are available for use by the radiocommunication service concerned fixed-satellite service. Precise fre- exclusively with the operation of quencies and bandwidths of emission spacecraft, in particular space track- shall be assigned on a case-by-case ing, space telemetry and space tele- basis.
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