RADIO RECEIV ER

Radio receiver

In radio communications,	a radio
receiver (commonly also	called

a radio) is an electronic device that receives radio waves and converts the information carried by them to a usable form.

•An antenna

•A resonant circuit (tuned circuit)

•A detector

•An indicating device such as an earphone

Radio waves were first identified in German

physicist Heinrich Hertz's 1887 series of experiments to prove James Clerk Maxwell's electroma

generate the waves and

micrometer spark gaps attached

to dipole and loop antennas to detect

•Consumer audio and high fidelity audio receivers and AV receivers

•Communications receivers

•Simple crystal radio receivers

•Satellite television receivers

•Specialized-use receivers such as telemetry

•Measuring receivers or measurement

•Scanners

•Internet radio devices

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