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Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by another antenna connected to a radio receiver. Radio is very widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing, and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave by varying some aspect of the wave) in the transmitter. In radar, used to locate and track objects like aircraft, ships, spacecraft and missiles, a beam of radio waves emitted by a radar transmitter reflects off the target object, and the reflected waves reveal the object's location. In radio navigation systems such as GPS and VOR, a mobile receiver accepts radio signals from navigational radio beacons whose position is known, and by precisely measuring the arrival time of the radio waves the receiver can calculate its position on Earth. In wireless radio remote control devices like drones, garage door openers, and keyless entry systems, radio signals transmitted from a controller device control the actions of a remote device.
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7
7" Car Radio Apple/Andriod Carplay BT Car Stereo Touch Screen Double 2Din+Camera
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7" Double 2 DIN Car MP5 Player Bluetooth Touch Screen Stereo Radio w/ Camera
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2DIN 7
2DIN 7" HD Car Stereo Radio MP5 Player bluetooth Touch Screen W/Rear View Camera
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Bluetooth Car Stereo Audio In-Dash FM Aux Input Receiver SD USB MP3 Radio Player
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Bluetooth Car Stereo Audio In-Dash FM Aux Input Receiver SD USB MP3 Radio Player
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Bluetooth Vintage Car FM Radio MP3 Player USB Classic Stereo Audio Receiver AUX
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7" Double 2 DIN Car Radio Stereo Bluetooth FM USB SD AUX IOS/Android MP5 Player
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Single DIN HD Touch Screen Car Stereo In Dash MP3 Player FM USB Radio Bluetooth
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7" Double 2 DIN Car Stereo Radio MP5 Touch Screen Bluetooth FM USB + Rear Camera
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Double Din Dash Kit Stereo Radio Installation Install Kit w Wire Harness Antenna
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2013-2014 TOYOTA CAMRY RADIO SCREEN DISPLAY AM/FM/CD PLAYER 57076 OEM 86140-0601
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Retekess V115 Portable FM/AM/SW Radio Digital MP3 Player Rechargeable Speaker US
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10.1'' Double 2 DIN Android 9.1 Bluetooth GPS Wifi Car Stereo Radio MP5 Player
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12V FM Car Stereo Radio Bluetooth 1 DIN In Dash Handsfree SD/USB AUX Head Unit
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FORD FOCUS Radio Receiver Unit AM-FM Tuner CD OEM 2012 - 2014
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BOSS Audio 616UAB Car Stereo - Bluetooth, USB, Aux-in, No CD/DVD, AM/FM Radio
BOSS Audio 616UAB Car Stereo - Bluetooth, USB, Aux-in, No CD/DVD, AM/FM Radio
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2DIN 7
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Retekess Portable FM/AM Radio Bluetooth Speaker Digital Rechargeable MP3 Player
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Used DEGEN DE28 Rechargeable AM FM ShortWave Radio Voice Recorder MP3 Player
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Double 2Din Car Stereo Radio Apple/Android Car Play BT 7
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