Home/CFR/Title 47/Part 73
FEDERAL · 47 CFR

Part 73 — Radio Broadcast Services

360 sections · Title 47: Telecommunication

§ 73.1Scope.
§ 73.14AM broadcast definitions.
§ 73.21Classes of AM broadcast channels and stations.
§ 73.23AM broadcast station applications affected by international agreements.
§ 73.24Broadcast facilities; showing required.
§ 73.25Clear channels; Class A, Class B and Class D stations.
§ 73.26Regional channels; Class B and Class D stations.
§ 73.27Local channels; Class C stations.
§ 73.28Assignment of stations to channels.
§ 73.29Class C stations on regional channels.
§ 73.30Petition for authorization of an allotment in the 1605-1705 kHz band.
§ 73.31Rounding of nominal power specified on applications.
§ 73.33Antenna systems; showing required.
§ 73.35Calculation of improvement factors.
§ 73.37Applications for broadcast facilities, showing required.
§ 73.44AM transmission system emission limitations.
§ 73.45AM antenna systems.
§ 73.49AM transmission system fencing requirements.
§ 73.51Determining operating power.
§ 73.53Requirements for authorization of antenna monitors.
§ 73.54Antenna resistance and reactance measurements.
§ 73.57Remote reading antenna and common point ammeters.
§ 73.61AM directional antenna field strength measurements.
§ 73.62Directional antenna system operation and tolerances.
§ 73.68Sampling systems for antenna monitors.
§ 73.69Antenna monitors.
§ 73.72Operating during the experimental period.
§ 73.88Blanketing interference.
§ 73.99Presunrise service authorization (PSRA) and postsunset service authorization (PSSA).
§ 73.127Use of multiplex transmission.
§ 73.128AM stereophonic broadcasting.
§ 73.132Territorial exclusivity.
§ 73.150Directional antenna systems.
§ 73.151Field strength measurements to establish performance of directional antennas.
§ 73.152Modification of directional antenna data.
§ 73.153Field strength measurements in support of applications or evidence at hearings.
§ 73.154AM directional antenna partial proof of performance measurements.
§ 73.155Directional antenna performance recertification.
§ 73.157Antenna testing during daytime.
§ 73.158Directional antenna monitoring points.
§ 73.160Vertical plane radiation characteristics, f(θ).
§ 73.182Engineering standards of allocation.
§ 73.183Groundwave signals.
§ 73.184Groundwave field strength graphs.
§ 73.185Computation of interfering signal.
§ 73.186Establishment of effective field at one kilometer.
§ 73.187Limitation on daytime radiation.
§ 73.189Minimum antenna heights or field strength requirements.
§ 73.190Engineering charts and related formulas.
§ 73.201Numerical designation of FM broadcast channels.
§ 73.202Table of Allotments.
§ 73.203Availability of channels.
§ 73.204International agreements and other restrictions on use of channels.
§ 73.205Zones.
§ 73.207Minimum distance separation between stations.
§ 73.208Reference points and distance computations.
§ 73.209Protection from interference.
§ 73.210Station classes.
§ 73.211Power and antenna height requirements.
§ 73.212Administrative changes in authorizations.
§ 73.213Grandfathered short-spaced stations.
§ 73.215Contour protection for short-spaced assignments.
§ 73.220Restrictions on use of channels.
§ 73.232Territorial exclusivity.
§ 73.267Determining operating power.
§ 73.277Permissible transmissions.
§ 73.293Use of FM multiplex subcarriers.
§ 73.295FM subsidiary communications services.
§ 73.310FM technical definitions.
§ 73.311Field strength contours.
§ 73.312Topographic data.
§ 73.313Prediction of coverage.
§ 73.314Field strength measurements.
§ 73.315FM transmitter location.
§ 73.316FM antenna systems.
§ 73.317FM transmission system requirements.
§ 73.318FM blanketing interference.
§ 73.319FM multiplex subcarrier technical standards.
§ 73.322FM stereophonic sound transmission standards.
§ 73.333Engineering charts.
§ 73.401Scope.
§ 73.402Definitions.
§ 73.403Digital audio broadcasting service requirements.
§ 73.404IBOC DAB operation.
§ 73.406Notification.
§ 73.501Channels available for assignment.
§ 73.503Licensing requirements and service.
§ 73.504Channel assignments in the Mexican border area.
§ 73.505Zones.
§ 73.506Classes of noncommercial educational FM stations and channels.
§ 73.507Minimum distance separations between stations.
§ 73.508Standards of good engineering practice.
§ 73.509Prohibited overlap.
§ 73.510Antenna systems.
§ 73.511Power and antenna height requirements.
§ 73.512Special procedures applicable to Class D noncommercial educational stations.
§ 73.513Noncommercial educational FM stations operating on unreserved channels.
§ 73.514Protection from interference.
§ 73.515NCE FM transmitter location.
§ 73.525TV Channel 6 protection.
§ 73.561Operating schedule; time sharing.
§ 73.567Determining operating power.
§ 73.593Subsidiary communications services.
§ 73.599NCE-FM engineering charts.
§ 73.601Scope of subpart.
§ 73.602Cross reference to rules in other parts.
§ 73.603Numerical designation of television channels.
§ 73.606Table of allotments.
§ 73.609Zones.
§ 73.611Emission levels and mask filter.
§ 73.612Protection from interference.
§ 73.613§ 73.613 [Reserved]
§ 73.614Power and antenna height requirements.
§ 73.616References to TV station interference protection methodology.
§ 73.617Interference protection of other services.
§ 73.618Antenna location and principal community coverage.
§ 73.619Contours and service areas.
§ 73.620Interference calculation and protection of TV broadcast services.
§ 73.621Noncommercial educational TV stations.
§ 73.622Digital television table of allotments.
§ 73.623TV application processing.
§ 73.624Television broadcast stations.
§ 73.625TV antenna system.
§ 73.626TV distributed transmission systems.
§ 73.658Affiliation agreements and network program practices; territorial exclusivity in non-network program arrangements.
§ 73.659-73.663§§ 73.659-73.663 [Reserved]
§ 73.664Determining operating power.
§ 73.670Commercial limits in children's programs.
§ 73.671Educational and informational programming for children.
§ 73.672§ 73.672 [Reserved]
§ 73.673Public information initiatives regarding educational and informational programming for children.
§ 73.681Definitions.
§ 73.682TV transmission standards.
§ 73.683Presumptive determination of field strength at individual locations.
§ 73.686Field strength measurements.
§ 73.687Transmission system requirements.
§ 73.699TV engineering charts.
§ 73.701Definitions.
§ 73.702Assignment and use of frequencies.
§ 73.703Geographical zones and areas of reception.
§ 73.712Equipment tests.
§ 73.713Program tests.
§ 73.731Licensing requirements.
§ 73.732Authorizations.
§ 73.733Normal license period.
§ 73.751Operating power.
§ 73.753Antenna systems.
§ 73.754Frequency monitors.
§ 73.755Modulation monitors.
§ 73.756System specifications for double-sideband (DBS) modulated emissions in the HF broadcasting service.
§ 73.757System specifications for single-sideband (SSB) modulated emissions in the HF broadcasting service.
§ 73.758System specifications for digitally modulated emissions in the HF broadcasting service.
§ 73.759Auxiliary transmitters.
§ 73.761Modification of transmission systems.
§ 73.762Time of operation.
§ 73.766§ 73.766 [Reserved]
§ 73.781Logs.
§ 73.782Retention of logs.
§ 73.787Station identification.
§ 73.788Service; commercial or sponsored programs.
§ 73.801Broadcast regulations applicable to LPFM stations.
§ 73.805Availability of channels.
§ 73.807Minimum distance separation between stations.
§ 73.808Distance computations.
§ 73.809Interference protection to full service FM stations.
§ 73.810Third adjacent channel interference.
§ 73.811LPFM power and antenna height requirements.
§ 73.812Rounding of power and antenna heights.
§ 73.813Determination of antenna height above average terrain (HAAT).
§ 73.816Antennas.
§ 73.825Protection to reception of TV channel 6.
§ 73.827Interference to the input signals of FM translator or FM booster stations.
§ 73.840Operating power and mode tolerances.
§ 73.845Transmission system operation.
§ 73.850Operating schedule.
§ 73.853Licensing requirements and service.
§ 73.854Unlicensed radio operations.
§ 73.855Ownership limits.
§ 73.858Attribution of LPFM station interests.
§ 73.860Cross-ownership.
§ 73.865Assignment and transfer of LPFM permits and licenses.
§ 73.870Processing of LPFM broadcast station applications.
§ 73.871Amendment of LPFM broadcast station applications.
§ 73.872Selection procedure for mutually exclusive LPFM applications.
§ 73.873LPFM license period.
§ 73.875Modification of transmission systems.
§ 73.877Station logs for LPFM stations.
§ 73.878Station inspections by FCC; availability to FCC of station logs and records.
§ 73.879Signal retransmission.
§ 73.881Equal employment opportunities.
§ 73.1001Scope.
§ 73.1010Cross reference to rules in other parts.
§ 73.1015Truthful written statements and responses to Commission inquiries and correspondence.
§ 73.1020Station license period.
§ 73.1030Notifications concerning interference to radio astronomy, research and receiving installations.
§ 73.1120Station location.
§ 73.1125Station telephone number.
§ 73.1150Transferring a station.
§ 73.1201Station identification.
§ 73.1202§ 73.1202 [Reserved]
§ 73.1206Broadcast of telephone conversations.
§ 73.1207Rebroadcasts.
§ 73.1208Broadcast of taped, filmed, or recorded material.
§ 73.1209References to time.
§ 73.1210TV/FM dual-language broadcasting in Puerto Rico.
§ 73.1211Broadcast of lottery information.
§ 73.1212Sponsorship identification; list retention; related requirements.
§ 73.1213Antenna structure, marking and lighting.
§ 73.1215Specifications for indicating instruments.
§ 73.1216Licensee-conducted contests.
§ 73.1217Broadcast hoaxes.
§ 73.1225Station inspections by FCC.
§ 73.1226Availability to FCC of station logs and records.
§ 73.1250Broadcasting emergency information.
§ 73.1300Unattended station operation.
§ 73.1350Transmission system operation.
§ 73.1400Transmission system monitoring and control.
§ 73.1515Special field test authorizations.
§ 73.1520Operation for tests and maintenance.
§ 73.1530Portable test stations [Definition].
§ 73.1540Carrier frequency measurements.
§ 73.1545Carrier frequency departure tolerances.
§ 73.1560Operating power and mode tolerances.
§ 73.1570Modulation levels: AM and FM.
§ 73.1580Transmission system inspections.
§ 73.1590Equipment performance measurements.
§ 73.1610Equipment tests.
§ 73.1615Operation during modification of facilities.
§ 73.1620Program tests.
§ 73.1635Special temporary authorizations (STA).
§ 73.1650International agreements.
§ 73.1660Acceptability of broadcast transmitters.
§ 73.1665Main transmitters.
§ 73.1670Auxiliary transmitters.
§ 73.1675Auxiliary antennas.
§ 73.1680Emergency antennas.
§ 73.1690Modification of transmission systems.
§ 73.1692§ 73.1692 [Reserved]
§ 73.1700Broadcast day.
§ 73.1705Time of operation.
§ 73.1715Share time.
§ 73.1720Daytime.
§ 73.1725Limited time.
§ 73.1730Specified hours.
§ 73.1735AM station operation pre-sunrise and post-sunset.
§ 73.1740Minimum operating schedule.
§ 73.1745Unauthorized operation.
§ 73.1750Discontinuance of operation.
§ 73.1800General requirements related to the station log.
§ 73.1820Station log.
§ 73.1835Special technical records.
§ 73.1840Retention of logs.
§ 73.1870Chief operators.
§ 73.1940Legally qualified candidates for public office.
§ 73.1941Equal opportunities.
§ 73.1942Candidate rates.
§ 73.1943Political file.
§ 73.1944Reasonable access.
§ 73.2080Equal employment opportunities (EEO).
§ 73.2090Ban on discrimination in broadcast transactions.
§ 73.3500Application and report forms.
§ 73.3511Applications required.
§ 73.3512Where to file; number of copies.
§ 73.3513Signing of applications.
§ 73.3514Content of applications.
§ 73.3516Specification of facilities.
§ 73.3517Contingent applications.
§ 73.3518Inconsistent or conflicting applications.
§ 73.3519Repetitious applications.
§ 73.3520Multiple applications.
§ 73.3521Mutually exclusive applications for low power television and television translator stations.
§ 73.3522Amendment of applications.
§ 73.3525Agreements for removing application conflicts.
§ 73.3526Online public inspection file of commercial stations.
§ 73.3527Online public inspection file of noncommercial educational stations.
§ 73.3533Application for construction permit or modification of construction permit.
§ 73.3534§ 73.3534 [Reserved]
§ 73.3536Application for license to cover construction permit.
§ 73.3537Application for license to use former main antenna as an auxiliary.
§ 73.3538Application to make changes in an existing station.
§ 73.3539Application for renewal of license.
§ 73.3540Application for voluntary assignment or transfer of control.
§ 73.3541Application for involuntary assignment of license or transfer of control.
§ 73.3542Application for emergency authorization.
§ 73.3544Application to obtain a modified station license.
§ 73.3545Application for permit to deliver programs to foreign stations.
§ 73.3549Requests for extension of time to operate without required monitors, indicating instruments, and EAS encoders and decoders.
§ 73.3550Requests for new or modified call sign assignments.
§ 73.3555Multiple ownership.
§ 73.3556Sponsorship identification; list retention; related requirements.
§ 73.3561Staff consideration of applications requiring Commission action.
§ 73.3562Staff consideration of applications not requiring action by the Commission.
§ 73.3564Acceptance of applications.
§ 73.3566Defective applications.
§ 73.3568Dismissal of applications.
§ 73.3571Processing of AM broadcast station applications.
§ 73.3572Processing of TV broadcast, Class A TV broadcast, low power TV, and TV translators applications.
§ 73.3573Processing FM broadcast station applications.
§ 73.3574Processing of international broadcast station applications.
§ 73.3578Amendments to applications for renewal, assignment or transfer of control.
§ 73.3580Local public notice of filing of broadcast applications.
§ 73.3584Procedure for filing petitions to deny.
§ 73.3587Procedure for filing informal objections.
§ 73.3588Dismissal of petitions to deny or withdrawal of informal objections.
§ 73.3589Threats to file petitions to deny or informal objections.
§ 73.3591Grants without hearing.
§ 73.3592Conditional grant.
§ 73.3593Designation for hearing.
§ 73.3594Local public notice of designation for hearing.
§ 73.3597Procedures on transfer and assignment applications.
§ 73.3598Period of construction.
§ 73.3601Simultaneous modification and renewal of license.
§ 73.3603Special waiver procedure relative to applications.
§ 73.3605Retention of applications in hearing status after designation for hearing.
§ 73.3612Annual employment report.
§ 73.3613Availability to FCC of station contracts.
§ 73.3615Ownership reports.
§ 73.3617Information available on the internet.
§ 73.3700Post-incentive auction licensing and operation.
§ 73.3701Reimbursement under the Reimbursement Expansion Act.
§ 73.3800Full power television channel sharing outside the incentive auction.
§ 73.3801Full power television simulcasting during the ATSC 3.0 (Next Gen TV) transition.
§ 73.3999Enforcement of 18 U.S.C. 1464 (restrictions on the transmission of obscene and indecent material).
§ 73.5000Services subject to competitive bidding.
§ 73.5001§ 73.5001 [Reserved]
§ 73.5002Application and certification procedures; return of mutually exclusive applications not subject to competitive bidding procedures; prohibition of collusion.
§ 73.5003Submission of full payments.
§ 73.5004§ 73.5004 [Reserved]
§ 73.5005Filing of long-form applications.
§ 73.5006Filing of petitions to deny against long-form applications.
§ 73.5007Designated entity provisions.
§ 73.5008Definitions applicable for designated entity provisions.
§ 73.5009Assignment or transfer of control.
§ 73.6000Definitions.
§ 73.6001Eligibility and service requirements.
§ 73.6002Licensing requirements.
§ 73.6003-73.6005§§ 73.6003-73.6005 [Reserved]
§ 73.6006Channel assignments.
§ 73.6007Power limitations.
§ 73.6008Distance computations.
§ 73.6010Class A TV station protected contour.
§ 73.6017Class A TV station protection of Class A TV stations.
§ 73.6018Class A TV station protection of TV stations.
§ 73.6019Class A TV station protection of low power TV and TV translator stations.
§ 73.6020Protection of stations in the land mobile radio service.
§ 73.6022Negotiated interference and relocation agreements.
§ 73.6023Distributed transmission systems.
§ 73.6024Transmission standards and system requirements.
§ 73.6025Antenna system and station location.
§ 73.6026Broadcast regulations applicable to Class A television stations.
§ 73.6028Class A television channel sharing outside the incentive auction.
§ 73.6029Class A television simulcasting during the ATSC 3.0 (Next Gen TV) transition.
§ 73.6030Low Power Protection Act.
§ 73.7000Definition of terms (as used in subpart K only).
§ 73.7001Services subject to evaluation by point system.
§ 73.7002Fair distribution of service on reserved band FM channels.
§ 73.7003Point system selection procedures.
§ 73.7004Petitions to deny tentative selectee(s).
§ 73.7005Maintenance of comparative qualifications.
§ 73.8000Incorporation by reference.