§ 2.303   Other forms of identification of stations.

   (a) The following table indicates forms of identification which may be
   used in lieu of call signs by the specified classes of stations. Such
   recognized means of identification may be one or more of the following:
   name of station, location of station, operating agency, official
   registration mark, flight identification number, selective call number
   or signal, selective call identification number or signal,
   characteristic signal, characteristic of emission or other clearly
   distinguishing form of identification readily recognized
   internationally. Reference should be made to the appropriate part of
   the rules for complete information on identification procedures for
   each service.
   Class of station Identification, other than assigned call sign
   Aircraft (U.S. registry) telephone Registration number preceded by the
   type of the aircraft, or the radiotelephony designator of the aircraft
   operating agency followed by the flight identification number.
   Aircraft (foreign registry) telephone Foreign registry identification
   consisting of five characters. This may be preceded by the
   radiotelephony designator of the aircraft operating agency or it may be
   preceded by the type of the aircraft.
   Aeronautical Name of the city, area, or airdrome served together with
   such additional identification as may be required.
   Aircraft survival craft Appropriate reference to parent aircraft, e.g.,
   the air carrier parent aircraft flight number or identification, the
   aircraft registration number, the name of the aircraft manufacturer,
   the name of the aircraft owner, or any other pertinent information.
   Ship telegraph When an official call sign is not yet assigned: Complete
   name of the ship and name of licensee. On 156.65 MHz: Name of ship.
   Digital selective call.
   Ship telegraph Digital selective call.
   Public coast (radiotelephone) and Limited Coast (Radiotelephone) The
   approximate geographic location in a format approved by the Commission.
       Coast station identification number.
   Public coast (radiotelegraph) Coast station identification number.
   Fixed Geographic location. When an approved method of superimposed
   identification is used, QTT DE (abbreviated name of company or
   station).
   Fixed: Rural subscriber service Assigned telephone number.
   Land mobile: Public safety, forestry conservation, highway maintenance,
   local government, shipyard, land transportation, and aviation services
   Name of station licensee (in abbreviated form if practicable), or
   location of station, or name of city, area, or facility served.
   Individual stations may be identified by additional digits following
   the more general identification.
   Land mobile: Industrial service Mobile unit cochannel with its base
   station: Unit identifier on file in the base station records. Mobile
   unit not cochannel with its base station: Unit identifier on file in
   the base station records and the assigned call sign of either the
   mobile or base station. Temporary base station: Unit designator in
   addition to base station identification.
   Land mobile: Domestic public and rural radio Special mobile unit
   designation assigned by licensee or by assigned telephone number.
   Land mobile: Railroad radio service Name of railroad, train number,
   caboose number, engine number, or name of fixed wayside station or such
   other number or name as may be specified for use of railroad employees
   to identify a specific fixed point or mobile unit. A railroad's
   abbreviated name or initial letters may be used where such are in
   general usage. Unit designators may be used in addition to the station
   identification to identify an individual unit or transmitter of a base
   station.
   Land mobile: Broadcasting (remote pickup) Identification of associated
   broadcasting station.
   Broadcasting (Emergency Broadcast System) State and operational area
   identification.
   Broadcasting (aural STL and intercity relay) Call sign of the
   broadcasting station with which it is associated.
   Broadcasting (television auxiliary) Call sign of the TV broadcasting
   station with which it is licensed as an auxiliary, or call sign of the
   TV broadcasting station whose signals are being relayed, or by network
   identification.
   Broadcasting (television booster). Retransmission of the call sign of
   the primary station.
   Disaster station By radiotelephony: Name, location, or other
   designation of station when same as that of an associated station in
   some other service. Two or more separate units of a station operated at
   different locations are separately identified by the addition of a unit
   name, number, or other designation at the end of its authorized means
   of identification.

   (b) Digital selective calls will be authorized by the Commission and
   will be formed by groups of numbers (0 through 9), however, the first
   digit must be other than 0, as follows:

   (1) Coast station identification number: 4 digits.

   (2) Ship station selective call number: 5 digits.

   (3) Predetermined group of ship stations: 5 digits.

   (c) Ship stations operating under a temporary operating authority shall
   identify by a call sign consisting of the letter “K” followed by the
   vessel's Federal or State registration number, or a call sign
   consisting of the letters “KUS” followed by the vessel's documentation
   number. However, if the vessel has no registration number or
   documentation number, the call sign shall consist of the name of the
   vessel and the name of the licensee as they appear on the station
   application form.

   [ 28 FR 12465 , Nov. 22, 1963, as amended at  40 FR 57675 , Dec. 11, 1975;
    41 FR 44042 , Oct. 6, 1976;  42 FR 31008 , June 17, 1977;  44 FR 62284 ,
   Oct. 30, 1979]

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Subpart E—Distress, Disaster, and Emergency Communications

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