Sec.  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.


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         Class of station                          Identification, other than a
ssigned call sign
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Aircraft (U.S. registry)           Registration number preceded by the type of
the aircraft, or the
 telephone.                         radiotelephony designator of the aircraft o
perating agency followed by the
                                    flight identification number.
Aircraft (foreign registry)        Foreign registry identification consisting o
f five characters. This may be
 telephone.                         preceded by the radiotelephony designator o
f the aircraft operating agency
                                    or it may be preceded by the type of the ai
rcraft.
Aeronautical.....................  Name of the city, area, or airdrome served t
ogether 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, t
he 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 assign
ed: Complete name of the ship and
                                    name of licensee. On 156.65 MHz: Name of sh
ip. Digital selective call.
Ship telegraph...................  Digital selective call.
Public coast (radiotelephone) and  The approximate geographic location in a for
mat approved by the Commission.
 Limited Coast (Radiotelephone).
                                   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 compan
y or station).
Fixed: Rural subscriber service..  Assigned telephone number.
Land mobile: Public safety,        Name of station licensee (in abbreviated for
m if practicable), or location of
 forestry conservation, highway     station, or name of city, area, or facility
 served. Individual stations may
 maintenance, local government,     be identified by additional digits followin
g the more general
 shipyard, land transportation,     identification.
 and aviation services.
Land mobile: Industrial service..  Mobile unit cochannel with its base station:
 Unit identifier on file in the
                                    base station records. Mobile unit not cocha
nnel with its base station: Unit
                                    identifier on file in the base station reco
rds and the assigned call sign of
                                    either the mobile or base station. Temporar
y base station: Unit designator
                                    in addition to base station identification.
Land mobile: Domestic public and   Special mobile unit designation assigned by
licensee or by assigned telephone
 rural radio.                       number.
Land mobile: Railroad radio        Name of railroad, train number, caboose numb
er, engine number, or name of
 service.                           fixed wayside station or such other number
or name as may be specified for
                                    use of railroad employees to identify a spe
cific fixed point or mobile unit.
                                    A railroad's abbreviated name or initial le
tters may be used where such are
                                    in general usage. Unit designators may be u
sed in addition to the station
                                    identification to identify an individual un
it or transmitter of a base
                                    station.
Land mobile: Broadcasting (remote  Identification of associated broadcasting st
ation.
 pickup).
Broadcasting (Emergency Broadcast  State and operational area identification.
 System).
Broadcasting (aural STL and        Call sign of the broadcasting station with w
hich it is associated.
 intercity relay).
Broadcasting (television           Call sign of the TV broadcasting station wit
h which it is licensed as an
 auxiliary).                        auxiliary, or call sign of the TV broadcast
ing station whose signals are
                                    being relayed, or by network identification
.
Broadcasting (television           Retransmission of the call sign of the prima
ry station.
 booster)..
Disaster station.................  By radiotelephony: Name, location, or other
designation of station when same
                                    as that of an associated station in some ot
her service. Two or more separate
                                    units of a station operated at different lo
cations are separately identified
                                    by the addition of a unit name, number, or
other designation at the end of
                                    its authorized means of identification.
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   (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]

Subpart E—Distress, Disaster, and Emergency Communications