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Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience...

FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American...

NOAA Weather Radio (NWR), also known as NOAA Weather Radio All Hazards, is an automated 24-hour network of VHF FM weather radio stations in the United...

The Federal Communications Commission (FCC) is an independent agency of the United States government that regulates communications by radio, television...

Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation...

A radio format or programming format (not to be confused with broadcast programming) describes the overall content broadcast on a radio station. The radio...

Low-power broadcasting is broadcasting by a broadcast station at a low transmitter power output to a smaller service area than "full power" stations within...

Talk radio is a radio format containing discussion about topical issues and consisting entirely or almost entirely of original spoken word content rather...

American Top 40 (abbreviated to AT40) is an internationally syndicated, independent song countdown radio program created by Casey Kasem, Don Bustany, Tom...

iHeartRadio (often shortened to just "iHeart") is an American freemium broadcast, podcast and radio streaming platform owned by iHeartMedia. It was founded...

Contemporary hit radio (also known as CHR, contemporary hits, hit list, current hits, hit music, top 40, or pop radio) is a radio format that is common...

HD Radio (HDR) is a trademark for an in-band on-channel (IBOC) digital radio broadcast technology. HD radio generally simulcasts an existing analog radio...

Sirius Satellite Radio was a satellite radio (SDARS) and online radio service operating in North America, owned by Sirius XM Holdings. Headquartered in...

Campus radio (also known as college radio, university radio or student radio) is a type of radio station that is run by the students of a college, university...

Radio drama (or audio drama, audio play, radio play, radio theatre, or audio theatre) is a dramatized, purely acoustic performance. With no visual component...

LBC (originally the London Broadcasting Company) is a British phone-in and talk radio station owned and operated by Global and based in its headquarters...

iHeartMedia, Inc., or CC Media Holdings, Inc., is an American mass media corporation headquartered in San Antonio, Texas. It is the holding company of...

Desert Island Discs is a radio programme broadcast on BBC Radio 4. It was first broadcast on the BBC Forces Programme on 29 January 1942. Each week a guest...

A broadcast relay station, also known as a satellite station, relay transmitter, broadcast translator (U.S.), re-broadcaster (Canada), repeater (two-way...

XM Satellite Radio (XM) was one of the three satellite radio (SDARS) and online radio services in the United States and Canada, operated by Sirius XM Holdings...