alarm, urgency, or safety signals, or any communication preceded by one of these signals, or any form of radiocommunication which, if delayed in transmission or reception, may adversely affect the safety of life or property. (b) Superfluous radiocommunication. Any transmission that is not necessary in properly carrying on the service for which the station is licensed. (c) Harmful interference. Any emission, radiation, or induction which endangers the functioning of a radionavigation service or of other safety services, or seriously degrades, obstructs, or repeatedly interrupts a radiocommunication service operating in accordance with regulations in this chapter. (d) Distress signal. (1) The distress signal is the international radiotelegraph or radiotelephone signal which indicates that a ship, aircraft, or other vehicle is threatened by grave and imminent danger and requests immediate assistance. (2) In radiotelegraphy, the international distress signal consists of the group "three dots, three dashes, three dots", transmitted as a single signal in which the dashes are emphasized so as to be distinguished clearly from the dots. (3) In radiotelephony, the international distress signal consists of the oral enunciation of the word "Mayday", pronounced as the French expression "m'aider". In case of distress, transmission of this particular signal is intended to insure recognition of a radiotelephone distress call by stations of any nationality. (e) [Reserved] (1) Urgency signal. (1) The urgency signal is the international radiotelegraph or radiotelephone signal which indicates that the calling station has a very urgent message to transmit concerning the safety of a ship, aircraft, or other vehicle, or of some person on board or within sight. (2) In radiotelegraphy, the international urgency signal consists of three repetitions of the group "XXX", sent before the call, with the letters of each group and the successive groups clearly separated from each other. (3) In radiotelephony, the international urgency signal consists of three oral repetitions of the word "Pan" pronounced as the French word "panne" and sent before the call. (g) Safety signal. (1) The safety signal is the international radiotelegraph or radiotelephone signal which indicates that the station sending this signal is ready to transmit a message concerning the safety of navigation or giving important meteorological warnings. (2) In radiotelegraphy, the international safety signal consists of three repetitions of the group "TTT", sent before the call, with the letters of each group and the successive groups clearly separated from each other. (3) In radiotelephony, the international safety signal consists of three oral repetitions of the French word "Securite", sent before the call. (h) Distress traffic. All messages relative to the immediate assistance required by the ship, aircraft, or other vehicle in distress. The (i) 500 kilocycles silent period. three-minute period twice an hour beginning at x h 15 and x h 45, Greenwich mean time (GMT), during which the International Radio Regulations require that all transmissions (except for certain emissions designated in those Regulations) must cease on all frequencies within a designated frequency-band centered on 500 kc/s. (j) Watch. The act of listening on a designated frequency. (k) Calling. Transmission from a station solely to secure the attention of another station, or other stations, for a particular purpose. (1) Working. Radiocommunication carried on, for a purpose other than calling, by any station or stations using telegraphy, telephony, or facsimile. (m) Control point. An operating position associated with a particular station or stations which is: (1) Under the control and supervision of the station licensee or his authorized agent; and (2) A place at which the required monitoring and control facilities are available; and (3) A place at which a duly licensed operator (or other person if the requirement for a licensed operator is waived by the Commission) responsible for the operation of the transmitter (s) is stationed. (n) Dispatch point. A place from which radiocommunication may be transmitted under supervision of a responsible operator at a control point. (0) Port operations. Communications in or near a port, or in locks or waterways, between coast stations and ship stations, or between ship stations, in which messages are restricted to those relating to the operational handling, the movement and the safety of ships and, in emergency, to the safety of persons. Messages which are of a public correspondence nature shall be excluded. (p) Navigational. Safety communications in the maritime mobile service pertaining to the maneuvering of vessels or the directing of vessel movements. Such communications are primarily for the exchange of information between ship stations and secondarily between ship stations and coast stations. (q) Environmental. Communications in the maritime mobile service for the broadcast of information pertaining to the environmental conditions in which vessels operate, i.e., weather, sea conditions, time signals of a grade adequate for practical navigation, notices to mariners, and hazards to navigation. (r) State control. Communications, other than Port Operations, in the maritime mobile service on very high frequencies (VHF) between coast stations, operated by a government, other than Federal, boating administration and ship stations in which messages are reIstricted to those of immediate concern and are related directly to the regulation and control, or rendering of assistance. (s) Commercial. Radiocommunication, other than Port Operations, on very high frequencies (VHF) between coast stations and ship stations aboard commercial transport vessels, or between ship stations aboard commercial transport vesels, in which messages are limited to those pertaining to commercial, operational, or economic matters related directly to the purposes for which the ship is used, including the piloting of vessels, movements of vessels, and to meet immediate needs, for obtaining vessel supplies and scheduling of repairs, or modification of vessels of immediate need. (t) Noncommercial. Radiocommunication, other than Port Operations, on very high frequencies (VHF) between coast stations and ship stations aboard vessels other than commercial transport vessels, or between ship stations aboard vessels other than commercial transport vessels, in which messages are limited to those pertaining to the needs of the vessel, for example, during rendezvous, maneuvers, during cruise, piloting of vessels, movements of vessels, obtaining of vessel supplies to meet immediate needs, scheduling of repairs, berthing, and accommodations. (u) Mississippi River System. The system of frequencies and facilities provided Assigned frequency. The frequency coinciding with the center of an authorized bandwidth of emission shall be specified as the assigned frequency. For single sideband radiotelephone emission the assigned frequency shall be 1.4 kc/s above the authorized carrier frequency. Authorized bandwidth. The authorized bandwidth is the occupied bandwidth authorized to be used by a station. Authorized carrier frequency. A specific carrier frequency authorized for use by a station, from which the actual or suppressed carrier frequency is permitted to deviate, solely because of frequency instability, by an amount not to exceed the frequency tolerance. Carrier power. The average power supplied to the antenna transmission line by a transmitter during one radio frequency cycle under conditions of no modulation. This definition does not apply to pulse modulated emissions. Frequency tolerance. The extent to which an actual or suppressed carrier frequency is permitted to depart, solely because of frequency instability, from the authorized carrier frequency. The frequency tolerance is expressed in parts in 10° or in cycles per second. Mean power. The power supplied to the antenna transmission line by a transmitter during normal operation, averaged over a time sufficiently long compared with the period of the lowest frequency encountered in the modulation. A time of 10 second during which the mean power is greatest will be selected normally. Occupied bandwidth. The frequency bandwidth such that, below its lower and above its upper frequency limits, the mean powers radiated are each equal to 0.5 percent of the total mean power radiated by a given emission. Peak envelope power. The average power supplied to the antenna transmission line by a transmitter during one radio frequency cycle at the highest crest of the modulation envelope, taken under conditions of normal operation. Selective calling. A means of calling in which signals are transmitted in accordance with a prearranged code for the purpose of operating a particular automatic attention device in use at the selected station whose attention is sought. Spurious emission. Emission on a frequency or frequencies which are outside the necessary band, and the level of which may be reduced without affecting the corresponding transmission of information. Spurious emissions include harmonic emissions, parasitic emissions, and intermodulation products, but exclude emissions in the immediate vicinity of the necessary band, which are a result of the modulation process for the transmission of information. [29 F.R. 11086, July 31, 1964] (a) Alaska area. For the purpose of frequency assignments to radio services and stations governed by this part, the Alaska area is defined as follows: The area bounded by a line extending due west-from the end of the southernmost boundary line between Canada and the mainland of southeastern Alaska-to 131° west longitude, thence due south to 54°30' north latitude, thence due west to 142° west longitude, thence due south to 50° north latitude, thence due west to 165° west longitude, thence due south to 47° north latitude, thence due west to the boundary line between Regions 2 and 3 (as this line is defined by the Geneva Radio Regulations, 1959), thence generally northward along this boundary line to 80° north latitude, thence due east to 135° west longitude, thence due south to 70° north latitude, thence due west to 140° west longitude, thence generally southwest to the northern end of the boundary line between the mainland of northern Alaska and Canada, thence following the boundary line between Alaska and Canada to the southernmost point of this line in southeastern Alaska. NOTE: Reference hereafter in this part to the "Alaska area" includes all of the "Zones" defined in paragraph (b) of this section. (b) Alaska zones. For the same purpose expressed in paragraph (a) of this section, the Alaska area is subdivided into six zones, defined as follows: Zone 1. That portion of the Alaska area east of 142° west longitude and south of 61° north latitude. Zone 2. That portion of the Alaska area bounded on the east by a line south of 61° north latitude which coincides with 142° west longitude, and by a line north of 61° north latitude which coincides with the boundary line between Alaska and Canada, and by a line coinciding with 61° north latitude which joins those two lines; and bounded on the west by a line south of 62° north latitude which coincides with 149° west longitude, thence running due south to 60°30' north latitude, thence due west to 150° west longitude, thence due south to the southern limit of the Alaska area, and bounded on the north by a line coinciding with 62° north latitude. Zone 3. That portion of the Alaska area bounded on the north by a line which coincides with 62° north latitude and extends eastward from 155° west longitude to 149° west longitude, thence due south to 60°30' north latitude, thence due west to 150° west longitude, thence due south to the southern limit of the Alaska area, thence westward to 155° west longitude, thence due north to 62° north latitude. Zone 4. That portion of the Alaska area west of 155° west longitude which is bounded on the north by a line coinciding with 62° north latitude extending due west to 164° west longitude, thence bounded on the west by a line coinciding with 164° west longitude extending due south to 58° north latitude, thence bounded on the north by a line coinciding with 58° north latitude extending due west to the western boundary of the Alaska area. Zone 5. That portion of the Alaska area west of 155° west longitude which is not included in Zone 4. Zone 6. That portion of the Alaska area east of 155° west longitude and north of 62° north latitude. NOTE: The diagram on page 12 illustrates the subdivision of Alaska into the six zones. (c) "Common carrier" or "carrier". Any person engaged in rendering communications service for hire to the public pursuant to authorization by the State and/or Federal Communications Commission. (d) Alaska-public fixed station. A fixed station in Alaska, which is open to public correspondence and is licensed by the Commission for radiocommunication between specified fixed points in Alaska exclusively. (e) Point of communication. This term, when applied to an Alaska-public fixed station, means a specified fixed station or specified geographic location with which such station is authorized to communicate. [36 F.R. 20956, Nov. 2, 1971] Subpart B-Applicaitons 1 SOURCE: The provisions of this Subpart B appear at 28 F.R. 13967, Dec. 21, 1963, unless otherwise noted. § 81.21 Authorization required for construction and operation of station. (a) Any radio station required by the Communications Act to be licensed shall not be operated in any service regulated by this part except under and in accordance with a valid station authorization granted by the Commission. Further, the operation of such apparatus shall be conducted in conformity with the provisions of statute, international treaty or agreement, and the rules of the Commission relative to the licensing of operators. NOTE: The Commission has exempted certain low power radio devices from its general licensing requirements; the extent of this exemption and related matters are set forth in Part 15, "Radio Frequency Devices", of this chapter. Licensing procedures and exemptions applicable to radio apparatus used for medical purposes, industrial heating, and other miscellaneous purposes not involving radiocommunication are set forth in Part 18, "Industrial, Scientific, and Medical Equipment", of this chapter. (b) Effective July 14, 1969, a construction permit shall not be required prior to the issuance of a license for the operation of any station subject to this part. Applications for construction permit pending on that date, or filed thereafter, shall be handled by the Commission as applications for station license. [28 F.R. 13967, Dec. 21, 1963, as amended at 34 F.R. 9284, June 12, 1969] § 81.22 Administrative classification of stations. (a) Stations in the maritime mobile service subject to this part are licensed according to the class of station as designated below: (1) Public class I coast stations. (b) Stations in the maritime radiolocation service subject to this part are li 1 For additional information concerning applications and for information concerning procedure relative to hearings, oral arguments, petitions, etc., refer to Part 1 of this chapter. censed according to the class of station as designated below: (1) Shore radiolocation stations; (2) Shore radiolocation training stations; (3) Shore radiolocation test stations. (c) Stations in the maritime radionavigation service subject to this part are licensed according to the class of station as designated below: (1) Shore radionavigation stations. (2) Shore-radar stations. (d) Stations in the fixed service subject to this part are licensed according to the class of station as designated below: (1) Marine fixed stations. (2) Marine control stations. (3) Marine repeater stations. (4) Marine relay stations. (5) Marine receiver-test stations. (e) Stations in the land mobile service subject to this part are licensed according to the class of station designated below: (1) Shipyard base stations. (2) Shipyard mobile stations. Station licenses shall not be issued solely to authorize the use and operation of shipyard base stations and shipyard mobile stations. License authority to use and operate such stations shall be included in the station license which provides for use and operation of the land station facilities primarily as a limited coast station in the maritime mobile service. § 81.23 Statutory eligibility for station license. A station license shall not be granted to or held by: (a) Any alien or the representative of any alien; (b) Any foreign government or the representative thereof; (c) Any corporation organized under the laws of any foreign government; (d) Any corporation of which any officer or director is an alien; (e) Any corporation of which more than one-fifth of the capital stock is owned of record or voted by aliens or their representatives or by a foreign government or representative thereof, or by any corporation organized under the laws of a foreign country; (f) Any corporation directly or indirectly controlled by any other corporation of which any officer or more than one-fourth of the directors are aliens, if the Commission finds that the public interest will be served by the refusal or revocation of such license; or (g) Any corporation directly or indirectly controlled by any other corporation of which more than one-fourth of the capital stock is owned of record or voted by aliens, their representatives, or by a foreign government or representatives thereof, or by any corporation organized under the laws of a foreign country, if the Commission finds that the public interest will be served by the refusal or revocation of such license. § 81.24 Application precedent to authorization. (a) Except as otherwise provided in §§ 81.26 and 81.41, no authorization will be granted for use or operation of any radio station on land in any service governed by this part, nor for any change in station control, facilities, services, equipment, or antenna, unless formal written application therefor in proper form first is filed with the Commission. (b) Standard forms are prescribed herein for use in connection with the majority of applications submitted for Commission consideration. These forms may be obtained without cost from the Commission at Washington, D.C. 20554, or from any of its field offices. (c) Except as otherwise permitted by this part, a separate application shall be filed in respect to each station and service subject to this part. (d) Except as otherwise provided by this section, each application for radio station authorization, and all correspondence relating thereto, shall be submitted in duplicate (unless otherwise specified in a particular case or with respect to a particular form) to the Commission's main office in Washington, D.C. (e) Except as otherwise provided in §§ 81.32 and 81.41, an application should be filed at least 60 days prior to the date on which it is desired that the requested authorization be granted by the Commission in order that action thereon may be taken by that date. (f) The application shall be specific and complete with regard to the information required in the application form, or otherwise specifically requested by the Commission. (g) An application by a corporation for a radio station authorization for an Alaska-public fixed station or a public coast station in the Alaska area proposing to establish common carrier radio facilities must (unless previously filed with the Commission) be accompanied by a copy of the applicant's charter, acts of incorporation, or articles of incorpora |