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Sound and radio waves are different phenomena. Sound consists of pressure variations in matter, such as air or water. Sound will not travel through a vacuum. Radio waves, like visible light, infrared, ultraviolet, X-rays and gamma rays, are electromagnetic waves that do travel through a vacuum. When you turn on a radio you hear sounds because the transmitter at the radio station has converted the sound waves into electromagnetic waves, which are then encoded onto an electromagnetic wave in the radio frequency range (generally in the range of 500-1600 kHz for AM stations, or 86-107 MHz for FM stations). Radio electromagnetic waves are used because they can travel very large distances through the atmosphere without being greatly attenuated due to scattering or absorption. Your radio receives the radio waves, decodes this information, and uses a speaker to change it back into a sound wave. An animated illustration of this process is given below (mouse-over the images for animations).
A sound wave is produced with a frequency of 5 Hz - 20 kHz.
The sound wave is equivalent to a pressure wave traveling through the air.
A microphone converts the sound wave into an electrical signal.
The electrical wave traveling through the microphone wire is analogous to the original sound wave.
The electrical wave is used to encode or modulate a high-frequency "carrier" radio wave. The carrier wave itself does not include any of the sound information until it has been modulated.
The carrier wave can either be amplitude modulated (AM, top) by the electrical signal, or frequency modulated (FM, bottom).
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The signal is transmitted by a radio broadcast tower.
Your radio contains an antenna to detect the transmitted signal, a tuner to pick out the desired frequency, a demodulator to extract the original sound wave from the transmitted signal, and an amplifier which sends the signal to the speakers. The speakers convert the electrical signal into physical vibrations (sound).
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What is communication net work?
A communication network is a collection of communication devices. They may be connected wirelessly or by wire. Examples include - A Ham Radio Net, A military radio net, or a family radio net, Cellular Telephones, Telephones, etc.
What is community work?
A communication network is a collection of communication devices. They may be connected wirelessly or by wire. Examples include - A Ham Radio Net, A military radio net, or a family radio net, Cellular Telephones, Telephones, etc.
What devices use radio waves for communication and transmission?
Devices that use radio waves for communication and transmission include smartphones, radios, televisions, Wi-Fi routers, and satellite communication systems.
What are some examples of devices that use radio waves for communication?
Some examples of devices that use radio waves for communication include smartphones, radios, televisions, Wi-Fi routers, and walkie-talkies.
How does a bluetooth car radio work?
Blue tooth technology involves communication between devices. The transmission is sent through short-range radio waves. The devices just need to be in the same area to communicate with each other. When they interact a personal network is formed between the devices.
What is community net?
A communication network is a collection of communication devices. They may be connected wirelessly or by wire. Examples include - A Ham Radio Net, A military radio net, or a family radio net, Cellular Telephones, Telephones, etc.
What is radio communication?
Radio communication is the transmission of information through radio waves between two or more devices. It is used for various purposes such as broadcasting, two-way communication like walkie-talkies and cell phones, and communication with satellites and spacecraft. Radio communication relies on frequencies within the radio spectrum to transmit signals over short or long distances.
How are radio waves used for effective communication around the world?
Radio waves are used for effective communication around the world by transmitting information through radio frequency signals. These signals can travel long distances and penetrate obstacles, allowing for widespread communication. Radio technology relies on modulation techniques to encode information onto the radio waves, enabling communication between devices such as radios, cell phones, and satellites.
What are the common uses of radio waves in modern technology and communication systems?
Radio waves are commonly used in modern technology and communication systems for purposes such as broadcasting radio and television signals, wireless communication (like cell phones and Wi-Fi), radar systems for navigation and tracking, and remote control devices.
What could be causing the walkie talkie noise that is disrupting communication?
Interference from other electronic devices or radio signals could be causing the walkie talkie noise that disrupts communication.
Bluetooth can be used to link up to devices within a 10-meter area using low-power radio-based communication?
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What term is often used to describe interference of radio waves?
The term often used to describe interference of radio waves is "radio frequency interference" (RFI). RFI can disrupt the normal operation of electronic devices that rely on radio frequency signals for communication.
