July 11, 2024: Media Bureau Announces Availability of Recalculated Pre-Sunrise and Post-Sunset Authorizations for AM Radio Stations. See the July 11, 2024 Public Notice.
Contents:
- General information about Radio Broadcasting
- AM Radio
- FM Radio, including Low Power FM and FM Translators
- Tools and Searches
- Mapping
- Radio Broadcast Filings
- Towers, Antenna Structure Registration
- Television (a little bit of information)
- International Considerations
- Related Information
General information about Radio Broadcasting
New Visitors' Info - recommended first reading
The Public and Broadcasting (a guide) -- revised December 2018
How to Apply for a Broadcast Station
Emergency Alert System (EAS)
Obscene, Indecent, and Profane Broadcasts
Inspection Fact Sheet
Licensee-conducted Contests
Noncommercial Nature of Educational Broadcasting
Operators Licenses not required for DJ's, staff at a licensed broadcast station since 1995
Political Programming
Religious broadcasting ban rumor continues to circulate 50 years later
Unattended Operation of Radio and TV Stations
Why do FM Frequencies End in an Odd Decimal?
AM Radio Broadcasting
AM Query -- Search for information on stations
AM Broadcast Station Classes and Clear, Regional, and Local Channels
AM and FM Single Frequency Maps on Google Earth
ALLO Preliminary AM Study
Critical Hours (Section 73.187) - Class B and D only
Daytime-only AM stations -- New AM daytime-only stations discontinued in 1987
Digital AM Radio
AM stations may file Form 335-AM for digital-only operation.
List of AM stations transmitting digitally
Defective AM Applications
Electrical Degrees <=> Meters
Energy-saving MDCL Technology waivers
Figure 8 - Minimum Efficiency calculations
AM Ground System Correction Factors
Ground Conductivity in the USA (M3 Map)
Groundwave Field Strength Graphs (Section 73.184)
MDCL (Modulation-Dependent Carrier Level) Saves Energy for AM Broadcasters
Method of Moments for AM Directional antenna proofs (filing fee)
Renewal of License for Radio Broadcast Stations
Sampling Systems - Criteria for Approval
Design considerations for sampling systems
Stereo Broadcasting by AM stations
Sunrise / Sunset Times (USA)
Travelers' Information Stations on the AM Band
Why AMs Reduce Power/Cease Operation at Night
FM, Low Power FM (LPFM), and FM Translators
FM Query -- search for information on stations
FM and AM Single Frequency Maps on Google Earth
Channel <=> Frequency
Digital FM Radio
List of FM stations transmitting digitally
Digital Special Temporary Authority requests
Super-Powered Maximum Digital ERP
FM Allotment Channel Finder
FM Model, for RF calculations
FM Power station class calculations
FM Preliminary Study
FM Station Classes and Service Contours
HAAT - Antenna Height Above Average Terrain
Renewal of License for Radio Broadcast Stations
Transmission line calculations
Translators and Boosters
Service Contour Data Points (FM)
Service Contour Maps via the FM Query - (select the Detailed output option)
Subcarriers, Subsidiary Communications Authority (SCA)
Low Power FM Broadcast Radio Stations
Low Power FM (LPFM) Channel Finder
Public Inspection Files online search
Tools and Searches
LMS Public Database Searches (current)
Distance between 2 Coordinates
Find Community Coordinates
Find Terminal Coordinates
FM and TV Propagation Curves Calculations
FM and TV Propagation Curves Graphs
FM Model, for RF calculations
HAAT - Antenna Height Above Average Terrain
Low Power FM (LPFM) Channel Finder
Media Bureau Public Databases (including CDBS)
NADCON - NAD27/NAD83 conversions
Mapping
AM and FM Single Frequency Maps on Google Earth
Circle Plot KML File Generator
Service Contour Data Points (FM)
Service Contour Data Points (TV)
U.S. Community Boundary Overlay for Google Earth (KML)
U.S. County Overlay for Google Earth (KML)
Radio Broadcast Filings
LMS Help Center for radio and television electronic application filing
LMS Public Searches
LMS Login Page for filing applications
LMS Public Database Files
Auctions Information (WTB)
Emergency Antennas, Silent Stations, Special Temporary Authority
Anti-Drug Abuse certification for STAs filed on paper
Renewal of License for Radio Broadcast Stations
Electioneering Communications Database
Fees
Application Processing Fees & Fee Guides
Regulatory Fees
Radio Broadcasting Rules (CFR)
RF Safety
OET Bulletins 56 and 65
Silent AM and FM Radio Broadcast Station Lists
U.S. County Overlay for Google Earth (KML)
Towers and Antenna Structure Registration (ASRN)
ASRS Queries
Towair (NAD83)
ASRN Records Within a Radius
FAA Form 7460-1
Tower Construction Notifications / Section 106 NHPA
Tower Light Outages -- Report to the FAA promptly! / (FAA web tool for registered users)
Tower Owners: Save Money! Save Birds!
U.S. County Overlay KML for Google Earth -- County radius ASR search option
Television / TV
Video Division -- MORE TV INFO here
TV Channel to Frequency Band
DTV Reception Maps (interactive)
License Renewal for Television Stations
Service Contour Maps via the TV Query - (select the Detailed output option)
Historical Interest
Annual Reports of the FCC and FRC
History of Commercial Radio
Radio History Documents
Radio Service Bulletins, 1915 to 1932
FM Radio Stations, 1936 to 1947
Radio History Cards Without Facility ID Numbers
International Considerations
Broadcast Agreements with Canada
Broadcast Agreements with Mexico
High Frequency (Shortwave) Broadcasting
Related Information
Cable Transmission of Radio Programming
Coverage Maps, Statements about Coverage
Free Speech vs. Right to Broadcast (explanation, not a court case)
Frequency Allocations Chart (USA)
Part 15 devices, AM Carrier Current stations
Ratings Distortion by Stations (policy statement)
Studio-Transmitter Link (STL), Remote Pickup Units (RPU) are administered by the Microwave Division
Telephone Conversations, Broadcast of (Section 73.1206)
Information about AM and FM broadcast radio stations is available at the Audio Division on the FCC's website. Information about TV stations is available at the Video Division.