81.706

81.707

Alternate transmission on the same radio channel.

81.708

81.709

Frequencies available.

Frequencies available in all zones of the Alaska area.

81.710 Frequencies available in one or more zones of the Alaska area.

81.711 Frequencies for communication with common carrier fixed stations. 81.712 Frequencies available carrier fixed stations.

81.713 Pairing

81.714

to common

carrier and

Alaska-public fixed frequencies. Use of U.S. Government frequencies. AUTHORITY: The provisions of this Part 81 issued under 48 Stat. 1066, 1082, as amended; 47 U.S.C. 154, 303, unless otherwise noted. Interpret or apply 48 Stat. 1064-1068, 10811105, as amended; 47 U.S.C. 151–155, 301-609. § 81.1 Basis and purpose.

(a) The basis for the rules in this part is the Communications Act of 1934, as amended, and applicable treaties and agreements to which the United States is a party. The rules in this part are issued pursuant to the authority contained in the Communications Act of 1934, as amended, which vests authority in the Federal Communications Commission to regulate common carriers of interstate and foreign communications, to regulate radio transmissions and to issue licenses for radio stations.

(b) The purpose of the rules and regulations in this part is to prescribe the manner in which portions of the radio spectrum may be made available for the use of radio for maritime operations which require radio transmitting facilities on land.

[28 F.R. 13962, Dec. 21, 1963]

Subpart A-Definition of Terms

SOURCE: The provisions of this Subpart A appear at 28 F.R. 13694, Dec. 21, 1963, unless otherwise noted.

§ 81.2 General.

(a) International Radio Regulations. The Radio Regulations in force annexed to the International Telecommunication Convention, Geneva, 1959, as between

the Government of the United States and other Contracting Governments; and such preceding international radio regulations as remain in force between the Government of the United States and other Contracting Governments.

(b) 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.

Telecom

(c) Radiocommunication. munication by means of radio waves.

(d) Public correspondence. Any telecommunication which the offices and stations must, by reason of their being at the disposal of the public, accept for transmission.

(e) Station. One or more transmitters or receivers or a combination of transmitters and receivers, including the accessory equipment, necessary at one location for carrying on a radiocommunication service. Each station shall be classified by the service in which it operates permanently or temporarily.

(f) Station authorization. Any valid construction permit, station license, or special temporary authority for use of a station, issued by the Commission.

(g) Person. Includes an individual, partnership, association, joint stock company, trust, or corporation.

(h) Permittee. A person who holds a valid station construction permit.

(1) Hours of service. The period of time during each calendar day when a station is used, in conformity with the terms of the station authorization, for the rendition of its normal service.

(1) Day. Where the word "day" is applied to the use of a specific frequency assignment or to a specific authorized transmitter power, such use of the word "day" shall be construed to mean transmission on such frequency assignment or with such authorized transmitter power during that period of time included between 1 hour after local sunrise and 1 hour before local sunset.

(k) Radio district. The territory within each radio district, and the address of the Engineer in Charge of each radio district, is set out in § 0.121 of this chapter.

(1) Commercial transport vessel. Any ship or vessel which is used primarily in commerce (1) for transporting persons or goods to or from any harbor(s) or port(s) or between places within a

harbor or port area, or (2) in connection with the construction, change in construction, servicing, maintenance, repair, loading, unloading, movement, piloting, or salvaging of any other ship or vessel.

(m) Mile. As used in this part, the term "mile" means a statute mile or 5,280 feet.

(n) Installed. As used in this part with respect to the requirements of radio apparatus in stations on land subject to this part, the term "installed" means installed in the particular station or vehicle to which the pertinent rule or regulation involving the use of this term is applied.

(0) Shipyard land mobile unit. A land vehicle operated and controlled by a shipyard and used for the transportation of shipyard personnel, material, or supplies.

§ 81.3 Maritime mobile service.

(a) Mobile service. A service of radiocommunication between mobile and land stations, or between mobile stations.

(b) Maritime and land mobile service (1) Maritime mobile service. A mobile service between coast stations and ship stations, or between ship stations, in which survival craft stations may also participate. (Aircraft stations, when transmitting on frequencies allocated to the maritime mobile service, may communicate in this service with ship stations and coast stations.)

(2) Land mobile service. A mobile service between base stations and land mobile stations, or between land mobile stations. (Only land mobile service carried on exclusively for maritime purposes is governed by this part.)

(c) Mobile station. A station in the mobile service intended to be used while in motion or during halts at unspecified points.

(d) Land station. A station in the mobile service not intended to be used while in motion.

(e) Coast station. A land station in the maritime mobile service.

(1) Public coast station. A coast station open to public correspondence.

(g) Limited coast station. A coast station, not open to public correspondence, which serves the operational and business needs of ships.

(h) Class I coast station. A coast station (public or limited) licensed to provide a maritime mobile service to ships

at sea, including such service over distances up to several thousand miles, whose frequency assignment for this purpose includes appropriate frequencies below 150 kc/s or between 5,000 kc/s and 25,000 kc/s.

(1) Class 11 coast station. A coast station (public or limited) licensed to provide a maritime mobile service, primarily of a regional character, whose frequency assignment does not include any frequency below 150 kc/s or between 5,000 kc/s and 25,000 kc/s except on a secondary basis under specified conditions intended to minimize the possibility of interference to other stations having priority on these frequencies.

(1) Class III coast station. A coast station (public or limited) licensed to provide a maritime mobile service, primarily of a local character, whose frequency assignment does not include any frequency below 25,000 kc/s.

(k) Operational designator. The letter “A”, “B”, or “F", appended to the term "class I", "class II", or "class III”, as these terms are defined in paragraphs (h), (1), and (j) of this section, designates that the coast station is licensed to render its normal service by means of (A) telegraphy, (B) telephony, or (F) facsimile. The designator "L" means "local" and is used to indicate (in lieu of a separate class III coast station license for the same station) that a class I or a class II station provides maritime mobile service of a local character on a frequency or frequencies above 30 Mc/s in addition to its service on other frequencies. Operational designators are used individually or in combinations of two or more, as may be appropriate to a particular coast station. Examples of coast station classification for regulatory and administrative purposes in accordance with these rules: Public I-A, Public III-B. Limited II-A, Limited III-BF, Public II-AB, Public II-BL, Public I-AL, etc.

A

(1) Marine-utility coast station. coast station, readily portable for use as a limited coast station at unspecified points ashore within a designated local

stations and marine-utility ship stations and licensed under one station authorization to operate as either a marine-utility coast station or a marine-utility ship station according to its location, pursuant to the provisions of paragraphs (1) and (m) of this section, at the time it is being operated.

(0) Base station. A land station in the land mobile service carrying on a service with land mobile stations.

(p) Shipyard base station. A land station, licensed and operated primarily as a limited coast station in the maritime mobile service, which is authorized additionally to be operated on a secondary basis as a base station for communication with shipyard mobile stations of the same licensee within a local geographic area designated by the Commission.

(q) Land mobile station. A mobile station in the land mobile service capable of surface movement within the geographical limits of a country or continent.

(r) Shipyard mobile station. A land mobile station on a shipyard land mobile unit used for communication solely with one or more shipyard base stations of the same licensee within a local geographic area designated by the Commission.

(a) Radiodetermination. The determination of position, or the obtaining of information relating to position, by means of the propagation properties of radio waves.

(b) Radiodetermination service. A service involving the use of radiodetermination.

(c) Maritime radiodetermination service. A radiodetermination service intended for the benefit of ships.

Radiodetermi(d) Radionavigation. nation used for the purposes of navigation, including obstruction warning.

(e) Radionavigation service. A radiodetermination service involving the use of radionavigation.

(1) Maritime radionavigation service. A radionavigation service intended for the benefit of ships.

(g) Radionavigation land station. A station in the radionavigation service not intended to be used while in motion.

(h) Shore radionavigation station. A radionavigation land station performing a maritime radionavigation service.

(1) Radar. A radiodetermination system based on the comparison of refer

ence signals with radio signals reflected, or retransmitted, from the position to be determined.

(j) Shore radar station. A shore radionavigation station utilizing radar.

(k) Radiolocation. Radiodetermination used for purposes other than those of radionavigation.

(1) Radiolocation service. A radiodetermination service involving the use of radiolocation.

(m) Maritime radiolocation service. A radiolocation service intended for the benefits of ships.

(n) Radiolocation land station. A station in the radiolocation service not intended to be used while in motion.

(0) Shore radiolocation station. A radiolocation land station performing a maritime radiolocation service.

(p) Shore radiolocation training station. A shore radiolocation station used solely to train and qualify persons in the effective use of maritime radiodetermination.

(q) Shore radiolocation test station. A shore radiolocation station used solely for testing maritime radiodetermination apparatus incident to its manufacture, installation, repair, servicing, or maintenance.

§ 81.5

Maritime fixed service.

(a) Fixed service. A service of radiocommunication between specified fixed points.

(b) Fixed station. A station in the fixed service.

(c) Marine fixed station. A fixed station, used primarily for safety communications, which is established at a designated location in a water area of, or contiguous to, the United States, and isolated from the mainland by water or marsh.

(d) Marine receiver-test station. A fixed station used to simulate transmission from a ship station to a coast station for the purpose of periodically testing the normal receiving installation of a licensed coast station to determine that such receiving installation is in good working condition.

(e) Operational fixed station. A fixed station, not open to public correspondence, operated by and for the sole use of those agencies operating their own radiocommunication facilities in the public safety, industrial, land transportation, marine, or aviation services.

(f) Operational land station. A land station, excluding aeronautical stations,

66-109-72-2

not open to public correspondence operated by and for the sole use of those agencies operating their own radiocommunication facilities in the public safety, industrial, land transportation, marine, or aviation services.

(g) Operational mobile station. A mobile station, excluding aircraft stations, not open to public correspondence, operated by and for the sole use of those agencies operating their own radiocommunication facilities in the public safety, industrial, land transportation, marine, or aviation services.

[36 F.R. 15045, Aug. 12, 1971]

tion station. A radiodetermination station operated for the express purpose of developing equipment or a technique solely for use only in that portion of the non-Government radiodetermination service (including the non-Government radionavigation service) which has been specifically allocated the authorized frequency (or frequencies) of the developmental radiodetermination station.

(c) Developmental fixed station. A fixed station operated for the express purpose of developing equipment or a technique solely for use only in that portion of the non-government fixed service which has been specifically allocated the authorized frequency (or frequencies) of the developmental fixed station.

(d) Specific classification. The specific classes of developmental stations on land licensed in the maritime mobile service, the maritime radiodetermination service (including maritime radionavigation service), and the maritime fixed services, are the same as classes defined in preceding sections of this part; however, for purposes of identification, the particular class of station is followed by the parenthetical indicator "(developmental)"; for example: "Public class III coast station (developmental)". § 81.7 Operational.

(a) Safety communication. The transmission or reception of distress,

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 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.

as

(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 teiegraphy, 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