dwelling units (as defined by the U.S. Bureau of Census) located within a circle centered at the location of the proposed fixed station (family dwelling units 70 or more miles distant from the television station antenna site are not to be counted (the radius of which shall be determined by use of charts entitled, "Chart for Determining Radius From Fixed Station in 7276 MHz Band to Interference Contour Along Which 10 Percent of Service from Adjacent Channel Television Station Would Be Destroyed" (Charts for television channels 4 and 5 are set forth in § 21.103). (iii) In cases where more than 100 family dwelling units are contained within the circle (determined according to paragraph (f)(2) of this section), the number of dwelling units therein shall be stated and a factual showing made that: (A) The proposed site is the only suitable location. (B) It is not feasible, technically or otherwise, to use other available frequencies. (C) The applicant has a definite plan, which should be disclosed, to control any interference that might develop to television reception from his operations. (D) The applicant is financially able and agrees to make such adjustments in the television receivers affected as may be necessary to eliminate interference caused by his operations. (g) New control and repeater stations will not be authorized in the 890940 MHz band. However, stations which were authorized to operate on such frequencies on April 16, 1958, may be granted renewed licenses subject to the following conditions: (1) Operations shall not be protected against any interference received from the emission of industrial, scientific, and medical equipment operating on 915 MHz or from the emission of radiolocation stations in the 890-942 MHz band. (2) No harmful interference shall be caused to stations operating in the radio-location service in the 890-942 MHz band. (h) For assignment to base stations for use exclusively in providing a one way signaling service to mobile receivers as follows: (1) Communication common carriers engaged also in the business of affording public landline message telephone service: 152.84 MHz, 158.10 MHZ. (2) Communication common carriers not also engaged in the business of providing a public landline message telephone service: 152.24 MHz, 158.70 MHz. (i) In lieu of a wireline circuit for control of a specific base station transmitter from its required control point or in lieu of wirelines for an audiocircuit to a base station control point from a remotely located fixed receiver used for reception of mobile station transmissions, and upon an affirmative showing that the conditions set forth in paragraphs (i) (1) through (5) of this section are satisfied, a single control and repeater station may be authorized to miscellaneous common carriers upon the frequencies indicated below: (as determined and defined in the most recent census reports of the U.S. Bureau of the Census). (3) The effective radiated power of the control or repeater station does not exceed 150 watts. (4) The use of the frequencies by a control or repeater station will not cause harmful interference to any other station authorized to use such frequencies and shall be on a secondary basis to the provision of mobile and rural radio service by other classes of stations. (5) Series operation of more than one control or repeater station is not involved. NOTE: The provisions of paragraphs (i) (1) and (2) of this section may be waived by the Commission upon a factual showing, supported by such engineering proof as may be necessary, that all of the currently assignable pairs of 152-162 MHz band frequencies listed in paragraph (c) of this section are not assigned or applied for within interference range of existing or possible station assignments within the urbanized area having a population of over 300,000 and, upon a satisfactory showing, that in such area over a substantial period of years the growth of the public land mobile radio service has not been hampered and is not likely to be hampered by a shortage of frequencies allocated to such service in the 152 to 162 MHz band. Facilities authorized under the provisions of such waivers shall be on a secondary basis and subject to the condition that, in the event the frequencies are required for assignment to base and mobile stations in the area, operation thereon shall be terminated within 60 days after notice is received from the Commission. (j) In lieu of a wire-line circuit for control of a specific base station transmitter from its required control point or in lieu of wirelines for an audio circuit to a base station control point from a remotely located fixed receiver used for reception of mobile station transmissions, and upon an affirmative showing that the conditions set forth in paragraphs (i) (1) through (5) of this section are satisfied, a single control and repeater station may be authorized to communication common carriers, who are engaged also in the business of affording public landline message telephone service, upon the frequencies indicated below: (1) The control station, and the base station controlled thereby, are located over 50 airline miles from the nearest geographical boundary of the nearest urbanized area having a population over 300,000 (as determined and defined in the most recent census reports of the U.S. Bureau of the Census). (2) The repeater station, and the point to which its transmissions are directed, are located over 50 airline miles from the nearest geographical boundary of the nearest urbanized area having a population over 300,000 (as determined and defined in the most recent census reports of the U.S. Bureau of the Census). (3) The effective radiated power of the control or repeater station does not exceed 150 watts. (4) The use of the frequencies by a control or repeater station will not cause harmful interference to any other station authorized to use such frequencies and shall be on a secondary basis to the provision of Mobile and Rural Radio Service by other classes of stations. (5) Series operation of more than one control or repeater station is not involved. NOTE: The provisions of paragraphs (j) (1) and (2) of this section may be waived by the Commission upon a factual showing, supported by such engineering proof as may be necessary, that all of the currently assignable pairs of 152-162 MHz band frequencies listed in paragraph (b) of this section are not assigned or applied for within interference range of existing or possible station assignments within the urbanized area having a population of over 300,000 and, upon a satisfactory showing, that in such area over a substantial period of years the growth of the public land mobile radio service has not been hampered by a shortage of frequencies allocated to such service in the 152/162 MHz band. Facilities authorized under the provisions of such waivers shall be on a sec (1) Frequencies in paragraph (k) of this section are for assignment in, or in the vicinity of, the urbanized areas listed in Table A of this paragraph (1), subject to the following conditions: (1) The transmitter site(s) for base station(s) shall be located not more than 50 miles from the geographic center of an urbanized area as defined in Table A of this paragraph (1). (2) Mobile stations shall be operated not more than 80 miles from the "Geographic Center” of an urbanized area as defined in Table A, of this paragraph (1), nor beyond a 30-mile radii of the associated base station or stations. (3) Base stations operating on the frequencies available for land mobile use in any listed urbanized area shall afford protection to cochannel and adjacent channel television stations in accordance with the values set out in Tables B and C of this paragraph (1), except for channel 15 in New York, N.Y., and Cleveland, Ohio, and channel 16 in Detroit, Mich., where protection will be in accordance with the values set forth in Tables C and F, of this paragraph (1). (i) Base stations shall be located a minimum of one mile from local television stations operating on TV channels separated by 2, 3, 4, 5, 7, and 8 TV channels from the television channel in which the base station will operate. (ii) Mobile units operating on the frequencies available for land mobile use in any given urbanized area shall afford protection to cochannel and adjacent channel television stations in accordance with the values set out in Tables D and G, of this paragraph (1), except for channel 15 in New York, N.Y., and Cleveland, Ohio, and channel 16 in Detroit, Mich., where protection will be in accordance with the values set forth in Tables E and G of this paragraph (1). (iii) The television stations to be protected in any given urbanized area, in accordance with the provisions of paragraphs (i) and (ii) of this paragraph (1), are identified in the Commission's publication, “TV Stations To Be Considered in The Preparation of Applications for Land Mobile Facilities in the Band 470-512 MHz." The publication is available at the offices of the Federal Communications Commission at Washington, D.C. or upon the request of interested persons. (4) For antenna heights between 500 feet and 3,000 feet above average terrain the effective radiated power must be reduced below 1 kilowatt in accordance with the values shown in the power reduction graph in Figure A below, except for channel 15 in New York, N.Y., and Cleveland, Ohio, and channel 16 in Detroit, Mich., where the effective radiated power must be reduced in accordance with figure B. For heights of more than 500 feet above average terrain, the distance to the radio path horizon will be calculated assuming smooth earth. If the distance so determined equals or exceeds the distance to the grade B contour of a cochannel TV station, and authorization will not be granted unless it can be shown that actual terrain considerations are such as to provide the de |