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(1) Advance consultation is recommended particularly for those applicants who have no reliable data which indicates whether the field strength or power flux density figures in the above table would be exceeded by their proposed radio facilities (except mobile stations). In such instances, the following is a suggested guide for determining whether coordination is recommended:
(i) All stations within 2.4 kilometers;
(ii) Stations within 4.8 kilometers with 50 watts or more effective radiated power (ERP) in the primary plane of polarization in the azimuthal direction of the Table Mountain Radio Receiving Zone;
(iii) Stations within 16.1 kilometers with 1 kW or more ERP in the primary plane of polarization in the azimuthal direction of Table Mountain Receiving Zone;
(iv) Stations within 80.5 kilometers with 25 kW or more ERP in the primary plane or polarization in the azimuthal direction of Table Mountain Receiving Zone.
(2) Applicants concerned are urged to communicate with the Radio Frequency Management Coordinator, Department of Commerce, Research Support Services, NOAA R/E5X2, Boulder Laboratories, Boulder, CO 80303; telephone (303) 497–6548, in advance of filing their applications with the Commission.
(3) The Commission will not screen applications to determine whether advance consultation has taken place. However, applicants are advised that such consultation can avoid objections from the Department of Commerce or proceedings to modify any authorization which may be granted which, in fact, delivers a signal at the site in excess of the field strength specified herein.
(e) Protection for Federal Communications Commission monitoring stations:
(1) Applicants in the vicinity of an FCC monitoring station for a radio station authorization to operate new transmitting facilities or changed transmitting facilities which would increase the field strength produced over the monitoring station over that previously authorized are advised to give consideration, prior to filing applications, to the possible need to protect the FCC stations from harmful interference. Geographical coordinates of the facilities which require protection are listed in §0.121(c) of the Commission's Rules. Applications for stations (except mobile stations) which will produce on any frequency a direct wave fundamental field strength of greater than 10 mV/m in the authorized bandwidth of service (−65.8 dBW/m2 power flux density assuming a free space characteristic impedance of 120 ohms) at the referenced coordinates, may be examined to determine extent of possible interference. Depending on the theoretical field strength value and existing root-sum-square or other ambient radio field signal levels at the indicated coordinates, a clause protecting the monitoring station may be added to the station authorization.
(2) In the event that calculated value of expected field exceeds 10 mV/m (−65.8 dBW/m2 ) at the reference coordinates, or if there is any question whether field strength levels might exceed the threshold value, advance consultation with the FCC to discuss any protection necessary should be considered. Prospective applicants may communicate with: Chief, Compliance and Information Bureau, Federal Communications Commission, Washington, DC 20554, Telephone (202) 632–6980.
(3) Advance consultation is suggested particularly for those applicants who have no reliable data which indicates whether the field strength or power flux density figure indicated would be exceeded by their proposed radio facilities (except mobile stations). In such instances, the following is a suggested guide for determining whether an applicant should coordinate:
(i) All stations within 2.4 kilometers (1.5 statute miles);
(ii) Stations within 4.8 kilometers (3 statute miles) with 50 watts or more average effective radiated power (ERP) in the primary plane of polarization in the azimuthal direction of the Monitoring Stations.
(iii) Stations within 16 kilometers (10 statute miles) with 1 kW or more average ERP in the primary plane of polarization in the azimuthal direction of the Monitoring Station;
(iv) Stations within 80 kilometers (50 statute miles) with 25 kW or more average ERP in the primary plane of polarization in the azimuthal direction of the Monitoring Station;
(4) Advance coordination for stations operating above 1000 MHz is recommended only where the proposed station is in the vicinity of a monitoring station designated as a satellite monitoring facility in §0.121(c) of the Commission's Rules and also meets the criteria outlined in paragraphs (e)(2) and (3) of this section.
(5) The Commission will not screen applications to determine whether advance consultation has taken place. However, applicants are advised that such consultation can avoid objections from the Federal Communications Commission or modification of any authorization which will cause harmful interference.
(f) Any applicant for a new permanent base or fixed station to be located on the islands of Puerto Rico, Desecheo, Mona, Vieques, and Culebra, or for a modification of an existing authorization which would change the frequency, power, antenna height, directivity, or location of a station on these islands and would increase the likelihood of the authorized facility causing interference, shall notify the Interference Office, Arecibo Observatory, HC3 Box 53995, Arecibo, Puerto Rico 00612, in writing or electronically, of the technical parameters of the proposal. Applicants may wish to consult interference guidelines, which will be provided by Cornell University. Applicants who choose to transmit information electronically should e-mail to: prcz@naic.edu.
(1) The notification to the Interference Office, Arecibo Observatory shall be made prior to, or simultaneously with, the filing of the application with the Commission. The notification shall state the geographical coordinates of the antenna (NAD–83 datum), antenna height above ground, ground elevation at the antenna, antenna directivity and gain, proposed frequency and FCC Rule Part, type of emission, effective radiated power, and whether the proposed use is itinerant. Generally, submission of the information in the technical portion of the FCC license application is adequate notification. In addition, the applicant shall indicate in its application to the Commission the date notification was made to the Arecibo Observatory.
(2) After receipt of such applications, the Commission will allow the Arecibo Observatory a period of 20 days for comments or objections in response to the notification indicated. The applicant will be required to make reasonable efforts in order to resolve or mitigate any potential interference problem with the Arecibo Observatory and to file either an amendment to the application or a modification application, as appropriate. If the Commission determines that an applicant has satisfied its responsibility to make reasonable efforts to protect the Observatory from interference, its application may be granted.
(3) The provisions of this paragraph do not apply to operations that transmit on frequencies above 15 GHz.
[28 FR 13032, Dec. 5, 1963, as amended at 42 FR 8329, Feb. 9, 1977; 42 FR 27894, June 1, 1977; 44 FR 77167, Dec. 31, 1979; 50 FR 39002, Sept. 26, 1985; 58 FR 44904, Aug. 25, 1993; 61 FR 8477, Mar. 5, 1996; 62 FR 55530, Oct. 27, 1997; 70 FR 31373, June 1, 2005]
§ 23.21 Communications by international control stations.
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Stations in the international fixed public control service are authorized to communicate between transmitting stations, receiving stations, message centers or control points operating in the international fixed public radiocommunication services for the purpose of handling service messages or international traffic between these points: Provided, That only traffic originating in or destined to points outside the contiguous states may be handled. Frequencies in bands designated for international control stations in Part 2 of this chapter may be assigned to these stations.
[38 FR 22480, Aug. 21, 1973]
§ 23.23 Use of frequencies for radio-telegraph communication within the continental United States.
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Licensees of point-to-point radiotelegraph stations may use any frequency authorized in a station license for communication between designated points within the 48 contiguous states and the District of Columbia upon the express condition that the use of any frequency above 5000 kHz shall be subject to the limitation that no interference shall be caused to the international service, or to service with Alaska or Hawaii; and in the event such interference is caused the licensee shall immediately discontinue the use of the frequency or frequencies producing such interference and operation thereon may be conducted only at times when such interference will not be caused.
§ 23.24 Correspondents and points of communication.
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Each instrument of authorization issued for fixed public or fixed public press service shall authorize communication to the points of communication and to the organizations, agencies, or persons specified therein only, except as provided by §23.53: Provided, however, That in the event of a change in an organization, agency, or person specified or a change in the effective control of such organization, agency, or person, the licensee shall immediately notify the Commission of such change and shall file an application for modification of the instrument of authorization: And provided further, That where such change is occasioned by reason of circumstances beyond the control of the licensee, communication under the then outstanding instrument of authorization shall be permitted to continue pending consideration of and action upon the application for modification of the instrument of authorization.
§ 23.25 Points of communication, limitations.
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No point of communication will be regularly authorized in any instrument of authorization for fixed public or fixed public press service in absence of an adequate showing that public correspondence may be transmitted and received from such points, except as provided in §23.53.
§ 23.26 Use of transmitters.
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The licensee of a point-to-point radiotelegraph or radiotelephone station may use any transmitter of the station for transmission upon any frequency assigned to the station for communication with any point of communication authorized by the station license: Provided, however, That the maximum power authorized for the specific frequency as shown in the license is not exceeded.
§ 23.27 Experimental research.
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The licensee of a station may be authorized to use a transmitter which is licensed for fixed public or fixed public press service for experimental research in accordance with the rules and regulations governing the experimental service upon the condition that no interference will be caused to the public service. Experimental (Research) and Experimental (Developmental) Stations authorized to operate as point-to-point telegraph or telephone stations shall comply with the rules governing fixed public radio services in addition to the rules and regulations governing experimental radio services.
§ 23.28 Special temporary authorization.
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(a) Requests for special temporary authority must be accompanied by a showing that interference will not be caused to the fixed public or fixed public press service for which the station is primarily licensed; and, in addition, such requests must be accompanied by the following:
(1) A statement of the call signs, location, and frequencies of the transmitting station; The call signs, location, and frequencies of the received station; and the type or types of emission to be employed by both stations.
(2) A statement as to whether the frequencies are to be used for contact control purposes only.
(3) A statement of the period for which the temporary authority is desired.
(4) A statement describing the service which is to be rendered.
(b) Temporary authorizations of operation not to exceed 180 days may be granted under the standards of section 309(f) of the Communications Act where extraordinary circumstances so require. Extensions of the temporary authorizations for a period of 180 days may also be granted, but the renewal applicant bears a heavy burden to show that extraordinary circumstances warrant such an extension.
(c) Each application proposing construction of one or more new antenna structures or alteration of the overall height of one or more existing antenna structures, where FAA notification prior to such construction or alteration is required by part 17 of this chapter, must include the FCC Antenna Structure Registration Number(s) for the affected structure(s). If no such number has been assigned at the time the application(s) is filed, the applicant must state in the application whether the owner has notified the FAA of the proposed construction or alteration and applied to the FCC for an Antenna Structure Registration Number in accordance with part 17 of this chapter. Applications proposing construction of one or more new antenna structures or alteration of the overall height of one or more existing antenna structures, where FAA notification prior to such construction or alteration is not required by part 17 of this chapter, must indicate such and, unless the structure is 6.10-meters or less above ground level (AGL), must contain a statement explaining why FAA notification is not required.
[48 FR 27253, June 14, 1983, as amended at 61 FR 4365, Feb. 6, 1996]
§ 23.29 License period and expiration time.
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(a) Licenses for stations operating in the fixed public radiocommunications services will be issued for a period of 10 years unless otherwise stated in the instrument of authorization. The date of expiration of such licenses shall be the 1st day of December, and each station license will be issued so as to expire at the hour 3 a.m., eastern standard time. Unless otherwise ordered, when an application for a new station license is granted within three months of the expiration date for licenses of the particular class of station involved, the license shall be issued for the unexpired period of the current license term and for the full succeeding term. If granted more than three months from the normal expiration date, the license shall be issued for the unexpired period of the current license term only.
(b) The Commission reserves the right to grant or renew station licenses in these services for a shorter period of time than that generally prescribed for such stations if, in its judgment, the public interest, convenience or necessity would be served by such action.
[28 FR 13032, Dec. 5, 1963, as amended at 36 FR 2562, Feb. 6, 1971; 38 FR 22480, Aug. 21, 1973; 48 FR 27253, June 14, 1983]
§ 23.31 Period of construction.
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Each construction permit for a radio station in the fixed public service will specify the date of grant as the earliest date of commencement of construction and a maximum of eight months thereafter as the time within which construction shall be completed and the station ready for operation, unless otherwise determined by the Commission upon proper showing in any particular case.
§ 23.32 Equipment and service tests.
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(a) Upon completion of construction of a radio station in exact accordance with the terms of the construction permit, the technical provisions of the application therefor and the other applicable provisions of this part and prior to filing of application for license, the permittee is authorized to test the equipment for a period not to exceed 10 days: Provided, That:
(1) The engineer in charge of the district in which the station is located is notified 2 days in advance of the beginning of tests.
(2) The Commission may notify the permittee to conduct no tests or may cancel, suspend, or change the date of beginning for the period of such tests as and when such action may appear to be in the public interest, convenience, and necessity.
(b) When construction and equipment tests are completed in exact accordance with the terms of the construction permit, the technical provisions of the application therefor, and the other applicable provisions of this part, and after an application for station license has been filed with the Commission showing the transmitter to be in satisfactory operating condition, the permittee is authorized to conduct service tests in exact accordance with the terms of the construction permit for a period not to exceed 30 days: Provided, That:
(1) The engineer in charge of the district in which the station is located is notified 2 days in advance of the beginning of the tests.
(2) The Commission reserves the right to cancel such tests or suspend, or change the date of beginning for the period of such tests as and when such action may appear to be in the public interest, convenience, and necessity by notifying the permittee.
(3) Service tests will not be authorized after the expiration date of the construction permit.
(c) The authorization for tests embodied in paragraphs (a) and (b) of this section shall not be construed as constituting a license to operate but as a necessary part of the construction.
§ 23.35 Compliance with tariff requirements.
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No licensee authorized to perform common carrier service by means of radio communication shall engage in such service without compliance with all statutory provisions and regulations of the Commission relative to the filing of tariffs; and nothing contained in this part shall be deemed as a waiver or modification of any such statutory provision or regulation.
§ 23.36 Posting of license.
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The license of a station shall be posted in a conspicuous place in the main transmitter building of the station or kept in such building where it is readily available for inspection purposes.
§ 23.37 Station identification.
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(a) General. Every radiotelegraph or radiotelephone station in the International Fixed Public or Fixed Public Press Service shall transmit, as provided below, the identifying call sign or other approved identification signal on each of its assigned frequencies below 30 MHz on which energy is being radiated.
(b) When required. (1) The call sign assigned to each frequency shall be transmitted on that frequency at the beginning and end of each period of use of the frequency.
(2) During regular operation on any freuency, the call sign or other approved identification signal shall be transmitted at least at hourly intervals within the period from 10 minutes before to 10 minutes after each hour. If identification during this period would require an interruption in the transmission of a radio-photo, a telephone conversation, an addressed program or a multiple addressed press message, or a break in the continuity of a “conference” or “leased line” type of service, the identifying signal shall be transmitted at the first break in, at the conclusion of, or simultaneously with, the particular transmission as described below.
(c) Methods of transmission. (1) All identifying signals shall be transmitted in such a manner as to permit identification without special equipment other than communication type receivers, except as provided in paragraph (e) of this section. When emissions are being used which are not capable of identification without special equipment, the identifying signal shall be transmitted by one of the following methods:
(i) By interrupting the transmission and transmitting the call sign in a manner which can be identified without special equipment.
(ii) By superimposing the call sign or other approved identification signal on the emission being transmitted without interrupting the transmission as provided for by paragraphs (e) and (f) of this section.
(d) Emissions to be used. (1) Except as otherwise provided, the following emissions shall be used for identification:
(i) Radiotelegraph stations. The identifying call sign shall be transmitted by International Morse code at a speed not to exceed 25 words per minute and shall consist of the signal “QRA de” followed by the call sign. This transmission shall be made at least three times.
(ii) Radiotelegraph stations using telephone type emissions. When telephone type emissions are being used in accordance with §23.11, identification may be made by voice and shall consist of announcing three times in English the call sign of the frequency being used
(iii) Radiotelephone stations. The identifying transmission may be made utilizing either telegraph or telephone type emissions. When telegraph emission is used, the transmission shall be made in International Morse Code at a speed not to exceed 25 words per minute and shall consist of the signal “QRA de” followed by the call sign. This transmission shall be made at least three times. When telephone emission is used, the identification shall consist of announcing three times in English the call sign of the frequency being used, provided that all privacy or secrecy devices shall be removed from the circuit during such transmissions.
(e) Superimposed identification. Radiotelegraph or radiotelephone stations identifying simultaneously with transmission of traffic: call signs or the general identification signal described in paragraph (f) of this section may be superimposed on the emission being transmitted by any method which will make identification possible with communication type receivers provided that approval of any such method shall first have been obtained from the Federal Communications Commission. (Approval by the Federal Communications Commission of any means of identification of complex emissions by superimposing identification of regular transmissions will be given upon satisfactory completion of coordinated tests thereof by the applicant and the Commission's Field Engineering Bureau.) Commission approval may be withdrawn if at any subsequent time harmful interference to adjacent frequencies is caused by the superimposed identification. When superimposed identification by call sign is used, the identifying signal shall consist of “QTT de (call sign)” transmitted at least three times in International Morse Code at a speed not to exceed 25 words per minute.
(f) General identification signal. When an approved method of superimposed identification is used, the identification signal shall consist of “QTT de (abbreviated name of company recorded with the Commission) (abbreviated name of station recorded with the Commission).” (It is suggested that “abbreviated company name” consist of two to five letters such as the initials of the company name and that “abbreviated name of station” consist of two or three letters indicating the name of the city where the licensee's message center is located. Both of these abbreviations shall be notified to the Commission before being used for identification.) This general identification signal shall be transmitted in International Morse Code at a speed not to exceed 25 words per minute and may be transmitted continuously or intermittently as desired provided that it shall be transmitted for at least five minutes total time during the period from 10 minutes before to 10 minutes after each hour that energy is being radiated on the frequency. The same signal may be superimposed on all transmissions being made at a particular station: Provided, however, That licensed call signs shall be transmitted on the frequencies to which they are assigned as often as is practicable and reasonable or at least at the beginning and end of each period of use of each frequency.
(g) Identification by printer. Notwithstanding the other provisions of this section with respect to methods of transmission, when single channel start-stop 5 unit code printer equipment is being used, the identifying call sign may be transmitted by means of printer signals. When identification is made by printer signals, it shall consist of the call sign for the particular frequency being used and shall be made at least three times at a speed of approximately 60 words per minute.
§ 23.38 Experimental points of communication, limitations.
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Experimental (Research) or Experimental (Developmental) stations licensed to operate as point-to-point telegraph or telephone stations in the fixed public service may communicate only with other experimental stations located within the continental limits of the United States (except Alaska): Provided, however, That upon application the Commission may authorize such a station to communicate with one or more specific points in Alaska, Hawaii, possessions of the United States, or with a specific foreign point. In each such case, the Commission will determine the nature of the experimental transmissions which may be made to such point of communication.
§ 23.39 Antenna structures.
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(a) FAA notification. Before the construction of new antenna structures or alteration in the height of existing antenna structures is authorized by the FCC, a Federal Aviation Administration (FAA) determination of “no hazard” may be required. To apply for this determination, the FAA must be notified of the planned construction. Criteria used to determine whether FAA notification is required for a particular antenna structure are contained in part 17 of this chapter. Applications proposing construction of one or more new antenna structures or alteration of the overall height of one or more existing antenna structures, where FAA notification prior to such construction or alteration is not required by part 17 of this chapter, must indicate such and, unless the reason is obvious (e.g. structure height is less than 6.10 meters AGL) must contain a statement explaining why FAA notification is not required.
(b) Painting and lighting. The owner of each antenna structure required to be painted and/or illuminated under the provisions of Section 303(q) of the Communications Act of 1934, as amended, shall operate and maintain the antenna structure painting and lighting in accordance with part 17 of this chapter. In the event of default by the owner, each licensee or permittee shall be individually responsible for conforming to the requirements pertaining to antenna structure painting and lighting.
(c) Antenna Structure Registration Number. Applications proposing construction of one or more new antenna structures or alteration of the overall height of one or more existing structures, where FAA notification prior to such construction or alteration is required by part 17 of this chapter, must include the FCC Antenna Structure Registration Number(s) for the affected structure(s). If no such number has been assigned at the time the application is filed, the applicant must state in the application whether or not the antenna structure owner has notified the FAA of the proposed construction or alteration and applied to the FCC for an Antenna Structure Registration Number in accordance with part 17 of this chapter for the antenna structure in question.
[61 FR 4366, Feb. 6, 1996]
§ 23.40 [Reserved]
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§ 23.41 Quarterly report of frequency usage.
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(a) Transmitted frequencies. Each licensee in the international fixed radio-communication services shall submit a report of frequency usage for all authorized frequencies below 30 MHz for each station. If more than one station is operated from a common control point, reports for the stations may be combined into one. This report shall be due 40 days after the close of each calendar quarter and shall contain the following information: Each frequency assigned to the station or stations and the number of hours it was used during the quarter to each point of communication for each class of service rendered (such as telegraph, telephone, program, or radiophoto), the types of emission normally used to each point of communication, and the total hours each frequency was used.
(b) Received frequency report. Upon specific request by the Commission, licensees in the international fixed public radiocommunication services shall furnish promptly the following information regarding frequencies received from all points of communication: All frequencies received, including call signs, location of transmitting station, type and bandwidth of emission normally employed, point of reception, and a symbol from the following table indicating the amount of usage of the particular received frequency.
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