Goto Section: 97.1 | 97.5 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 97.3 Definitions.
(a) The definitions of terms used in part 97 are:
(1) Amateur operator. A person named in an amateur operator/primary
license station grant on the ULS consolidated licensee database to be
the control operator of an amateur station.
(2) Amateur radio services. The amateur service, the amateur-satellite
service and the radio amateur civil emergency service.
(4) Amateur service. A radiocommunication service for the purpose of
self-training, intercommunication and technical investigations carried
out by amateurs, that is, duly authorized persons interested in radio
technique solely with a personal aim and without pecuniary interest.
(5) Amateur station. A station in an amateur radio service consisting
of the apparatus necessary for carrying on radiocommunications.
(6) Automatic control. The use of devices and procedures for control of
a station when it is transmitting so that compliance with the FCC Rules
is achieved without the control operator being present at a control
(7) Auxiliary station. An amateur station, other than in a message
forwarding system, that is transmitting communications point-to-point
within a system of cooperating amateur stations.
(8) Bandwidth. The width of a frequency band outside of which the mean
power of the transmitted signal is attenuated at least 26 dB below the
mean power of the transmitted signal within the band.
(9) Beacon. An amateur station transmitting communications for the
purposes of observation of propagation and reception or other related
(10) Broadcasting. Transmissions intended for reception by the general
public, either direct or relayed.
(11) Call sign system. The method used to select a call sign for
amateur station over-the-air identification purposes. The call sign
(i) Sequential call sign system. The call sign is selected by the FCC
from an alphabetized list corresponding to the geographic region of the
licensee's mailing address and operator class. The call sign is shown
on the license. The FCC will issue public announcements detailing the
procedures of the sequential call sign system.
(ii) Vanity call sign system. The call sign is selected by the FCC from
a list of call signs requested by the licensee. The call sign is shown
on the license. The FCC will issue public announcements detailing the
procedures of the vanity call sign system.
(iii) Special event call sign system. The call sign is selected by the
station licensee from a list of call signs shown on a common data base
coordinated, maintained and disseminated by the amateur station special
event call sign data base coordinators. The call sign must have the
single letter prefix K, N or W, followed by a single numeral 0 through
9, followed by a single letter A through W or Y or Z (for example K1A).
The special event call sign is substituted for the call sign shown on
the station license grant while the station is transmitting. The FCC
will issue public announcements detailing the procedures of the special
event call sign system.
(12) CEPT radio amateur license. A license issued by a country
belonging to the European Conference of Postal and Telecommunications
Administrations (CEPT) that has adopted Recommendation T/R 61-01 (Nice
1985, Paris 1992, Nicosia 2003).
(13) Control operator. An amateur operator designated by the licensee
of a station to be responsible for the transmissions from that station
to assure compliance with the FCC Rules.
(14) Control point. The location at which the control operator function
(15) CSCE. Certificate of successful completion of an examination.
(16) Earth station. An amateur station located on, or within 50 km of,
the Earth's surface intended for communications with space stations or
with other Earth stations by means of one or more other objects in
(18) External RF power amplifier. A device capable of increasing power
output when used in conjunction with, but not an integral part of, a
(20) FAA. Federal Aviation Administration.
(21) FCC. Federal Communications Commission.
(22) Frequency coordinator. An entity, recognized in a local or
regional area by amateur operators whose stations are eligible to be
auxiliary or repeater stations, that recommends transmit/receive
channels and associated operating and technical parameters for such
stations in order to avoid or minimize potential interference.
(23) Harmful interference. Interference 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 the Radio Regulations.
(24) IARP (International Amateur Radio Permit). A document issued
pursuant to the terms of the Inter-American Convention on an
International Amateur Radio Permit by a country signatory to that
Convention, other than the United States. Montrouis, Haiti.
(25) Indicator. Words, letters or numerals appended to and separated
from the call sign during the station identification.
(26) Information bulletin. A message directed only to amateur operators
consisting solely of subject matter of direct interest to the amateur
(27) In-law. A parent, stepparent, sibling, or step-sibling of a
licensee's spouse; the spouse of a licensee's sibling, step-sibling,
child, or stepchild; or the spouse of a licensee's spouse's sibling or
(28) International Morse code. A dot-dash code as defined in ITU-T
Recommendation F.1 (March, 1998), Division B, I. Morse code.
(29) ITU. International Telecommunication Union.
(30) Line A. Begins at Aberdeen, WA, running by great circle arc to the
intersection of 48Â° N, 120Â° W, thence along parallel 48Â° N, to the
intersection of 95Â° W, thence by great circle arc through the
southernmost point of Duluth, MN, thence by great circle arc to 45Â° N,
85Â° W, thence southward along meridian 85Â° W, to its intersection with
parallel 41Â° N, thence along parallel 41Â° N, to its intersection with
meridian 82Â° W, thence by great circle arc through the southernmost
point of Bangor, ME, thence by great circle arc through the
southernmost point of Searsport, ME, at which point it terminates.
(31) Local control. The use of a control operator who directly
manipulates the operating adjustments in the station to achieve
compliance with the FCC Rules.
(32) Message forwarding system. A group of amateur stations
participating in a voluntary, cooperative, interactive arrangement
where communications are sent from the control operator of an
originating station to the control operator of one or more destination
stations by one or more forwarding stations.
(33) National Radio Quiet Zone. The area in Maryland, Virginia and West
Virginia Bounded by 39Â°15â€² N on the north, 78Â°30â€² W on the east, 37Â°30â€²
N on the south and 80Â°30â€² W on the west.
(34) Physician. For the purpose of this part, a person who is licensed
to practice in a place where the amateur service is regulated by the
FCC, as either a Doctor of Medicine (M.D.) or a Doctor of Osteopathy
(35) Question pool. All current examination questions for a designated
written examination element.
(36) Question set. A series of examination questions on a given
examination selected from the question pool.
(37) Radio Regulations. The latest ITU Radio Regulations to which the
United States is a party.
(38) RACES (radio amateur civil emergency service). A radio service
using amateur stations for civil defense communications during periods
of local, regional or national civil emergencies.
(39) Remote control. The use of a control operator who indirectly
manipulates the operating adjustments in the station through a control
link to achieve compliance with the FCC Rules.
(40) Repeater. An amateur station that simultaneously retransmits the
transmission of another amateur station on a different channel or
(41) Space station. An amateur station located more than 50 km above
the Earth's surface.
(42) Space telemetry. A one-way transmission from a space station of
measurements made from the measuring instruments in a spacecraft,
including those relating to the functioning of the spacecraft.
(43) Spurious emission. An emission, or frequencies outside the
necessary bandwidth of a transmission, the level of which may be
reduced without affecting the information being transmitted.
(44) Telecommand. A one-way transmission to initiate, modify, or
terminate functions of a device at a distance.
(45) Telecommand station. An amateur station that transmits
communications to initiate, modify or terminate functions of a space
(46) Telemetry. A one-way transmission of measurements at a distance
from the measuring instrument.
(47) Third party communications. A message from the control operator
(first party) of an amateur station to another amateur station control
operator (second party) on behalf of another person (third party).
(48) ULS (Universal Licensing System). The consolidated database,
application filing system and processing system for all Wireless
(49) VE. Volunteer examiner.
(50) VEC. Volunteer-examiner coordinator.
(b) The definitions of technical symbols used in this part are:
(1) EHF (extremely high frequency). The frequency range 30-300 GHz.
(2) EIRP (equivalent isotropically radiated power). The product of the
power supplied to the antenna and the antenna gain in a given direction
relative to an isotropic antenna (absolute or isotropic gain).
Note: Divide EIRP by 1.64 to convert to effective radiated power.
(3) ERP (effective radiated power) (in a given direction). The product
of the power supplied to the antenna and its gain relative to a
half-wave dipole in a given direction.
Note: Multiply ERP by 1.64 to convert to equivalent isotropically
(4) HF (high frequency). The frequency range 3-30 MHz.
(5) Hz. Hertz.
(6) LF (low frequency). The frequency range 30-300 kHz.
(7) m. Meters.
(8) MF (medium frequency). The frequency range 300-3000 kHz.
(9) PEP (peak envelope power). The average power supplied to the
antenna transmission line by a transmitter during one RF cycle at the
crest of the modulation envelope taken under normal operating
(10) RF. Radio frequency.
(11) SHF (super high frequency). The frequency range 3-30 GHz.
(12) UHF (ultra high frequency). The frequency range 300-3000 MHz.
(13) VHF (very high frequency). The frequency range 30-300 MHz.
(14) W. Watts.
(c) The following terms are used in this part to indicate emission
types. Refer to § 2.201 of the FCC Rules, Emission, modulation and
transmission characteristics, for information on emission type
(1) CW. International Morse code telegraphy emissions having
designators with A, C, H, J or R as the first symbol; 1 as the second
symbol; A or B as the third symbol; and emissions J2A and J2B.
(2) Data. Telemetry, telecommand and computer communications emissions
having (i) designators with A, C, D, F, G, H, J or R as the first
symbol, 1 as the second symbol, and D as the third symbol; (ii)
emission J2D; and (iii) emissions A1C, F1C, F2C, J2C, and J3C having an
occupied bandwidth of 500 Hz or less when transmitted on an amateur
service frequency below 30 MHz. Only a digital code of a type
specifically authorized in this part may be transmitted.
(3) Image. Facsimile and television emissions having designators with
A, C, D, F, G, H, J or R as the first symbol; 1, 2 or 3 as the second
symbol; C or F as the third symbol; and emissions having B as the first
symbol; 7, 8 or 9 as the second symbol; W as the third symbol.
(4) MCW. Tone-modulated international Morse code telegraphy emissions
having designators with A, C, D, F, G, H or R as the first symbol; 2 as
the second symbol; A or B as the third symbol.
(5) Phone. Speech and other sound emissions having designators with A,
C, D, F, G, H, J or R as the first symbol; 1, 2, 3 or X as the second
symbol; E as the third symbol. Also speech emissions having B or F as
the first symbol; 7, 8 or 9 as the second symbol; E as the third
symbol. MCW for the purpose of performing the station identification
procedure, or for providing telegraphy practice interspersed with
speech. Incidental tones for the purpose of selective calling or
alerting or to control the level of a demodulated signal may also be
(6) Pulse. Emissions having designators with K, L, M, P, Q, V or W as
the first symbol; 0, 1, 2, 3, 7, 8, 9 or X as the second symbol; A, B,
C, D, E, F, N, W or X as the third symbol.
(7) RTTY. Narrow-band direct-printing telegraphy emissions having
designators with A, C, D, F, G, H, J or R as the first symbol; 1 as the
second symbol; B as the third symbol; and emission J2B. Only a digital
code of a type specifically authorized in this part may be transmitted.
(8) SS. Spread spectrum emissions using bandwidth-expansion modulation
emissions having designators with A, C, D, F, G, H, J or R as the first
symbol; X as the second symbol; X as the third symbol.
(9) Test. Emissions containing no information having the designators
with N as the third symbol. Test does not include pulse emissions with
no information or modulation unless pulse emissions are also authorized
in the frequency band.
[ 54 FR 25857 , June 20, 1989]
Editorial Note: For Federal Register citations affecting § 97.3, see the
List of CFR Sections Affected, which appears in the Finding Aids
section of the printed volume and at www.govinfo.gov.
Goto Section: 97.1 | 97.5
Goto Year: 2020 |
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