FM radio was invented in 1933 by Edwin Armstrong. The technology uses frequency modulation to control noise static generated by Earth's atmosphere and electrical equipment to improve radio audio signals. Armstrong's inve... More » Technology Audio Equipment

The invention of radio had a powerful impact on society because it allowed wireless communication from distant locations for the first time in history. Moreover, the radio allowed information to be transmitted in multipl... More » History Inventions

Users can listen to FM radio live online through websites such as and iHeartRadio. Both sites offer free streaming of live radio stations around the United States. More » Art & Literature
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FM radio transmitters can be acquired at retailers such as Wal-Mart or Best Buy, where they can be purchased in store or on the companies' websites. They can also be acquired through More » Technology Audio Equipment

Getting better reception for an FM radio involves turning off other electronic devices that interfere with the radio's single, placing the radio in an area where it gets good reception or using the radio's antenna to its... More » Technology Audio Equipment

An FM radio antenna can be made at home by cutting lengths of 16-gauge insulated wire and connecting it to the FM radio or an audio amplifier. Some radio signals are very strong and will not require much of an antenna, b... More » Technology Audio Equipment

The basic difference between AM and FM radio is contained in their names; AM stands for amplitude modulation while FM stands for frequency modulation. The way in which radio waves are manipulated to produce sounds in a r... More » Technology Audio Equipment