Q:

When was FM radio invented?

A:

Quick Answer

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 invention of the FM radio is recorded as U.S. patent 1,342,885.

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Full Answer

At the time of its invention, FM radio was not adopted by the radio industry. To prove the benefits of FM radio, Armstrong spent $300,000 of his own wealth to build a full-scale FM station in 1939. As of 2015, the FM format is the preferred system setup for radio stations and is a required channel for all broadcast television audio.

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Related Questions

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    How can I get better reception on my FM radio?

    A:

    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 full potential. If the radio lacks an antenna, one is easily made using a piece of wire, such as a coat hanger.

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    How do you make a homemade FM radio antenna?

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    Why is the radio important?

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    A:

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