FM broadcasting - Wikipedia
网页FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to transmit …
FM broadcasting in the United States - Wikipedia
网页In the United States, FM broadcasting stations operate on a 20.2 MHz-wide frequency band, spanning from 87.8 MHz to 108 MHz. This is divided into 101 0.2 MHz-wide channels, which are designated as channels 200 through 300.
Frequency modulation - Wikipedia
网页Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and computing.
The history of FM radio: The search for sensational sound
网页2023年9月5日 · While AM radio uses amplitude modulation to transmit radio broadcasts, FM radio transmits its broadcasts based on modulation of frequencies. AM is the simplest form of radio, capable of providing a steady wave …
Understanding How AM/FM Radio Works - Lifewire
网页2021年1月28日 · Ever wonder how AM/FM radio works? It's actually easy to understand once you know the basics. Learn how radio waves and broadcasts are created.
The Complete Beginner’s Guide to FM Transmitters
网页Whether you’re looking to broadcast music from your smartphone or create a localized FM radio station, understanding low-power FM transmitters is essential for achieving successful and reliable personal broadcasting.
How FM Stereo Came to Life - Radio World
网页2016年1月27日 · A unified GE-Zenith scheme bearing the fusion moniker of system 4-4A was deemed superior and formally approved by the FCC in April 1961 as the standard stereo FM broadcasting method in the United States, and subsequently by most of the worldwide radio industry.
The Public and Broadcasting - Federal Communications Commission
网页It provides a brief overview of the regulation of broadcast radio and television licensees, describing how the FCC authorizes broadcast stations, the various rules relating to broadcast programming and operations that stations must comply with, and the essential obligation of licensees that their stations serve their local communities.
AM vs FM - Difference and Comparison | Diffen
网页What's the difference between AM and FM? AM (or Amplitude Modulation) and FM (or Frequency Modulation) are ways of broadcasting radio signals. Both transmit the information in the form of electromagnetic waves. AM works by modulating (varying) the amplitude of the signal or carrier transmitted ac...
What is FM Radio? How do FM radios work? and More…
网页2022年9月28日 · FM, short for Frequency Modulation, is one of the few types of radio broadcasting in use today. As the name suggests it uses frequency modulation to give radio users high-fidelity sound over their device.