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A receiver that picks up waves that carry sound is called a radio. A radio sends the electric signal through speakers so the sound can be heard. Each radio station sends out radio waves of a certain frequency. A person changes a radio from one frequency to another to hear different stations.
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The flow of the electricity creates radio waves that travel out the antenna and travel all the way to your radio. Your radio catches these radio waves which cause an electrical current in your radio. Your radio then turns this current into sound that you can hear!
"Radio waves" transmit music, conversations, pictures and data invisibly through the air, often over millions of miles -- it happens every day in thousands o...
24 Δεκ 2008 · The Professor describes how a radio works. Specifically, he explains the concept of a carrier frequency and how the radio subtracts the noise from the signal...
30 Μαΐ 2023 · You can get an idea for how a radio transmitter works by starting with a battery and a piece of wire. A battery sends electricity (a stream of electrons) through a wire if you connect the wire between the two terminals of the battery.
Millions of radio waves--carrying sound wave signals and digital signals--reach your receiver every second. The receiver's tuner picks out a specific signal. Its amplifier strengthens that signal. A demodulator separates the signal from the carrier wave.
20 Μαΐ 2022 · An easy-to-follow introduction to modern digital radios and how they differ from traditional AM and FM (analog/analogue) radios.
