tion of position, or the obtaining of information relating to position, by means of the propagation properties of radio waves. Radiodetermination service. A service involving the use of radiodetermination. Radiodetermination station. A station In the radiodetermination service. Radio direction-finding. Radiodetermination using the reception of radio waves for the purpose of determining the direction of a station or object. Radio direction-finding station. A radiodetermination station using radio direction-finding. Radiolocation. Radiodetermination used for purposes other than those of radionavigation. Radiolocation land station. A station in the radiolocation service not intended to be used while in motion. Radiolocation mobile station. A station in the radiolocation service intended to be used while in motion or during halts at unspecified points. Radiolocation service. A radiodetermination service involving the use of radiolocation. Radionavigation. Radiodetermination used for the purposes of navigation, including obstruction warning. Redionavigation land station. A staton in the radionavigation service not intended to be used while in motion. Radionavigation land test station MTF). A radionavigation land station Maintenance Test Facility) in the Beronautical radionavigation service which is used as a radionavigation calibraten station for the transmission of vent.al information in connection with the testing and calibration of aircraft rational aids, receiving equipment, and interrogators at predetermined sur face locations. The primary purpose of this facility is to permit maintenance testing by aircraft radio service personnel. Radionavigation land test station (OTF). A radionavigation land station (Operational Test Facility) in the aeronautical radionavigation service which is used as a radionavigation calibration station for the transmission of essential information in connection with the testing and calibration of aircraft navigational aids, receiving equipment, and interrogators at predetermined surface locations. The primary purpose of this facility is to permit the pilot to check a radionavigation system aboard the aircraft prior to takeoff. Radionavigation mobile station. A station in the radionavigation service intended to be used while in motion or during halts at unspecified points. Radionavigation-satellite earth station. An earth station in the radionavigation-satellite service. Radionavigation-satellite service. A service using space stations on earth satellites for the purpose of radionavigation, including, in certain cases, transmission or re-transmission of supplementary information necessary for the operation of the radionavigation system. Radionavigation-satellite space station. A space station in the radionavigation-satellite service, on an earth satellite. Radionavigation service. A radiodetermination service involving the use of radionavigation. Radio range station. A radionavigation land station in the aeronautical radionavigation service providing radial equisignal zones. Radiosonde. An automatic radio transmitter in the meteorological aids service usually carried on an aircraft, free balloon, kite or parachute, and which transmits meteorological data. Radiosonde station. A station in the meteorological aids service employing a radiosonde. Radio waves (or Hertzian waves). Electromagnetic waves of frequencies lower than 3,000 Gc/s [3,000,000 Mc/s], propagated in space without artificial guide. Remote pickup broadcast base station. A base station licensed for communicating with remote pickup broadcast mobile stations. Remote pickup broadcast mobile station. A land mobile station licensed for the transmission of program material and related communications from the scene of events which occur outside a studio to broadcasting station, and for communicating with other remote pickup broadcast base and mobile stations. Safety service. A radiocommunication service used permanently or temporarily for the safeguarding of human life and property. Ship station. A mobile station in the maritime mobile service located on board a vessel, other than a survival craft, which is not permanently moored. Simplex operation. Operating method in which transmission is made possible alternately in each direction, for example, by means of manual control. Spacecraft. Any type of space vehicle including an earth satellite or a deepspace probe, whether manned or unmanned. Space research earth station. An earth station in the space research service. Space research service. A space service in which spacecraft or other objects in space are used for scientific or technological research purposes. Space research space station. A space station in the space research service. Space service. A radiocommunication service: -between earth stations and space stations, -or between space stations, -or between earth stations when the signals are re-transmitted by space stations, or transmitted by reflection from objects in space, excluding reflection or scattering by the ionosphere or within the earth's atmosphere. Space station. A station in the space service located on an object which is beyond, is intended to go beyond, or has been beyond, the major portion of the earth's atmosphere. Space telecommand. The use of radiocommunication for the transmission of signals to a space station to initiate, modify or terminate functions of the equipment on a space object, including the space station. Space telemetering. The use of telemetering for the transmission from a space station of results of measurements made in a spacecraft, including those relating to the functioning of the spacecraft. Space tracking. Determination of the orbit, velocity or instantaneous position of an object in space by means of radio determination, excluding primary radar, for the purpose of following the movement of the object. Standard broadcasting station. A broadcasting station operated on a frequency in the band 535-1605 kilocycles. Standard frequency service. A radiocommunication service for scientific technical and other purposes, providing the transmission of specified frequencies of stated high precision, intended for general reception. Stationary satellite. A satellite, the circular orbit of which lies in the plane of the earth's equator and which turns about the polar axis of the earth in the same direction and with the same period as those of the earth's rotation. Survival craft station. A mobile station in the maritime or aeronautical mobile service intended solely for survival purposes and located on any lifeboat, liferaft or other survival equipment. Telecommunication. Any transmission, emission or reception of signs, signals, writing, images, and sounds or intelligence of any nature by wire, radio, optical or other electromagnetic systems. Telegraphy. A system of telecommunication which is concerned in any process providing transmission and reproduction at a distance of documentary matter, such as written or printed matter or fixed images, or the reproduction at a distance of any kind of information in such form. The foregoing definition appears in the International Telecommunication Convention, but, for the purposes of the Commission's rules, telegraphy shall mean, unless otherwise specified, "A system of telecommunication for the transmission of written matter by the use of a signal code." Telemetering. The use of telecommunication for automatically indicating or recording measurements at a distance from the measuring instrument. Telemetering fixed station. A fixed station, the emissions of which are used for telemetering. Telemetering land station. A land station, the emissions of which are used for telemetering. Telemetering mobile station. A mobile station, the emissions of which are used for telemetering. Telephony. A system of telecommunication set up for the transmission of speech or, in some cases, other sounds. Television. A system of telecommuEcation for transmission of transient images of fixed or moving objects. A Television broadcasting station. broadcasting station utilizing both television and telephony to provide combination and simultaneous visual and aural programs intended to be received directly by the general public. Television inter-city relay station. A fixed station used for intercity transmission of television program material and related communications for use by television broadcast stations. Television pickup station. A land mobile station used for the transmission of television program material and related communications from the scenes of events occurring at points removed from television broadcast station studios to television broadcast stations. Television STL station (studio-transmitter link). A fixed station used for the transmission of television program material and related communications from a studio to the transmitter of a elevision broadcast station. Terrestrial service. Any radio service Cefined in this Part, other than a space ervice or the radio astronomy service. Terrestrial station. A station in a Terrestrial service. Tropospheric scatter. The propagawen of radio waves by scattering as a ret of irregularities or discontinuities in the physical properties of the tropophere. Zone station. A fixed station in the public safety (police) radio service using radiotelegraph (Al emission) for communication with other similar stations in the same zone and with an interzone station. 1 PR. 12465, Nov. 22, 1963, as amended at PR 7155, May 28, 1965; 30 F.R. 8679, -A9 1965; 30 FR. 8839, July 14, 1965; 30 F14370, Oct. 21, 1965] Subpart B-Allocation, Assignment, and Use of Radio Frequencies 2.100 International regulations in force. The Radio Regulations (Geneva, 2.9, which became effective internamally on May 1, 1961, were incorpo rated to the extent practicable in Subparts A and B of this part and became effective nationally on December 1, 1961. The Radio Regulations were subsequently revised, in part, by the Extraordinary Administrative Radio Conference (Geneva, 1963) which specified January 1, 1965 as the effective date of the revision. The partial revision has also been incorporated to the extent practicable in Subparts A and B of this part and is applicable nationally, effective July 1, 1965. [30 F.R. 7156, May 28, 1965] §2.102 EHF (extremely high frequency). Assignment of frequencies. (a) Except as otherwise provided in this section, the assignment of frequencies and bands of frequencies to all stations and classes of stations and the licensing and authorizing of the use of all such frequencies between 10 kc/s and 90 Gc/s, and the actual use of such frequencies for radiocommunication or for any other purpose, including the transfer of energy by radio, shall be in accordance with the Table of Frequency Allocations in § 2.106. (b) On the condition that harmful interference will not be caused to services operating in accordance with the Table of Frequency Allocations the following exceptions to paragraph (a) of this section may be authorized: (1) In individual cases the Commission may, without rule-making proceedings, authorize on a temporary basis only, the use of frequencies not in accordance with the Table of Frequency Allocations for projects of short duration or emergencies where the Commission finds that important or exceptional circumstances require such utilization: Provided, That such authorizations are not intended to develop a service to be operated on frequencies other than those allocated such service. (2) A station for the development of techniques or equipment to be employed by services or classes of stations set forth in columns 8 and 9 of the Table of Frequency Allocations may be authorized the use of frequencies allocated to those services or classes of stations. (3) Experimental stations engaged solely in scientific or technical radio experiments not related to an existing or proposed service nor intended to develop a proposed service or specific use of radio may be authorized the use of any frequency which is in a band allocated to the fixed, land mobile or broadcasting services or to one of these services shared with another service. (4) Experimental stations solely in ionospheric sounding by means engaged of the technique of sweeping a band of frequencies may be authorized the use of any band or bands or frequencies not allocated, on an exclusive or shared basis, to the radio astronomy service. (5) Experimental stations to be operated pursuant to a contractual agreement with the United States Government and intended for the sole and express purpose of developing equipment or a technique to be employed by stations belonging to and operated by the United States may be authorized the use of any frequency which is not in a band allocated, on an exclusive or shared basis, to the radio astronomy service. (6) Experimental stations intended for the sole and express purpose of developing equipment or a technique to be employed by stations under the jurisdiction of a foreign government may be authorized the use of any frequency which is not in a band allocated to the amateur service or the radio astronomy service. (7) In the event a band is reallocated so as to delete its availability for use by a particular service, the Commission may provide for the further interim use of the band by stations in that service for a temporary, specific period of time. (c) The use of frequencies in the bands above 25 Mc/s allocated exclusively to Government stations and the use of frequencies below 25 Mc/s which may not be in accordance with § 2.106 may be authorized to non-Government stations in those instances where the Commission finds, after consultations with the appropriate Government agency or agencies, that such assignment is neces sary for intercommunication with Government stations or where such use by non-Government stations is required for coordination with Government activities. (d) Aircraft stations may communicate with stations of the maritime mobile service. They shall then conform to those provisions of the Radio Regulations which relate to the maritime mobile service. For this purpose aircraft stations should use the frequencies allocated to the maritime mobile service. However, having regard to interference which may be caused by aircraft stations at high altitudes, maritime mobile frequencies in the bands above 30 Mc/s shall not be used by aircraft stations in any specific area without the prior agreement of all administrations of the area in which interference is likely to be caused. In particular, aircraft stations operating in Region 1 should not use frequencies in the bands above 30 Mc/s allocated to the maritime mobile service by virtue of any agreement between administrations in that Region. (e) Non-Government services operating on frequencies in the band 25-50 Mc/s must recognize that it is shared with various services of other countries; that harmful interference may be caused by skywave signals received from distant stations of all services of the United States and other countries radiating power on frequencies in this band; and that no protection from such harmful interference generally can be expected. Persons desiring to avoid such harmful interference should consider operation on available frequencies higher in the radio spectrum not generally subject to this type of difficulty. (f) The stations of a service shall use frequencies so separated from the limits of a band allocated to that service as not to cause harmful interference to the service to which the frequency bands immediately adjoining are allocated. (g) In the bands above 25 Mc/s which are allocated to the non-Government land mobile service, fixed stations may be authorized on the following conditions: (1) That such stations are authorized in the service shown in Column 11 of the Table of Frequency Allocations in the band in question; (2) That harmful interference will not be caused to services operating in accordance with the Table of Frequency Allocations. [28 FR. 12465, Nov. 22, 1963, as amended at 30 FR. 7156, May 28, 1965] §2.103 Government use of non-Government frequencies. (a) Government stations may be authorized to use non-Government frequencies in the bands above 25 Mc/s if the Commission finds that such use is necessary for coordination of Government and non-Government activities: Provided, however, That: (1) Government operation on nonGovernment frequencies shall conform with the conditions agreed upon by the Commission and the Office of Emergency Planning (the more important of which are contained in subparagraphs (2), (3), and (4) of this paragraph), a complete list of which is available for public examination at each of the Commission's Field Engineering and Monitoring Bureau Field Offices; (2) Such operations shall be in accordance with Commission rules governing the service to which the frequencies involved are allocated; (3) Such operations shall not cause harmful interference to non-Government stations and, should harmful interference result, that the interfering Government operation shall immediately terminate; and (4) Government operation has been certified as necessary by the non-Government licensees involved and this certification has been furnished, in writing, to the Government agency with which communication is required. §2.104 Radio astronomy station notifi cation. (a) Pursuant to No. 639AC, Article 9A and Section F of Appendix 1A to the international Radio Regulations (as revised, Geneva, 1963), operators of radio astronomy stations desiring international recognition of their use of specific radio astronomy frequencies or bands of frequencies for reception, should file the following information with the Commission for inclusion in the Master International Frequency Register: (1) The center of the frequency band observed, in kc/s up to 30,000 kc/s inclusive, and in Mc/s above 30,000 kc/s. (2) Date of putting into use (actual or foreseen, as appropriate). (3) Name and location of the station, including geographical co-ordinates in degrees and minutes. (4) Width of frequency band observed by the station. (5) Antenna type and dimensions, effective area and angular coverage in azimuth and elevation. (6) Maximum hours of reception (G.M.T.) of the frequency band shown in subparagraph (1) of this paragraph. (7) Overall receiving system noise temperature (°K). (8) Class of observations to be taken on the frequency band shown in subparagraph (1) of this paragraph. Class A observations are those in which the sensitivity of the equipment is not a primary factor. Class B observations are those of such a nature that they can be made only with advanced low-noise receivers using the best techniques. (b) Observations being conducted on frequencies or frequency bands not allocated to the radio astronomy service should be reported as in paragraph (a) of this section for information purposes. Information in this category will not be submitted for entry in the Master International Frequency Register and protection from interference will not be afforded such operations by stations in other services. [30 F.R. 7156, May 28, 1965] § 2.105 Application and format of the Table of Frequency Allocations. (a) In the Table of Frequency Allocations below 25 Mc/s, the authority extended to stations in the fixed service, unless otherwise specified, extends only to those stations in the following categories of service: (1) Aeronautical fixed. (2) Fixed (in U.S. possessions and Alaska). (3) International fixed public. (b) In the Table of Frequency Allocations between 5,000 and 25,000 kc/s, the authority extended to stations in the mobile service unless otherwise specified, extends only to those stations in the following categories of service: (1) Aeronautical mobile. (c) Columns 1, 2, 3, and 4 of the Table of Frequency Allocations indicate the allocation applicable on a worldwide basis or in Region 2 in accordance with the Geneva Radio Regulations. |