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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.
Baseus Bluetooth Wireless Car FM Transmitter AUX Receiver Adapter 2 USB Charger
Baseus Bluetooth Wireless Car FM Transmitter AUX Receiver Adapter 2 USB Charger
Price:
13.42 USD
Ends:
May 23, 06:13 am
Retevis RT22 UHF Two way radios Long Range CTCSS/DCS 2W VOX Walkie Talkies(2pcs)
Retevis RT22 UHF Two way radios Long Range CTCSS/DCS 2W VOX Walkie Talkies(2pcs)
Price:
29.99 USD
Ends:
May 30, 10:03 am
Skullcandy INDY EVO Wireless Bluetooth Earbuds  (Certified Refurbished)
Skullcandy INDY EVO Wireless Bluetooth Earbuds (Certified Refurbished)
Price:
18.09 USD
Ends:
Jun 05, 12:05 am
Portable AM FM Radio Compact Transistor Radio Pocket Radio BLACK
Portable AM FM Radio Compact Transistor Radio Pocket Radio BLACK
Price:
17.05 USD
Ends:
Jun 19, 01:41 am
Panasonic AM/FM Portable Radio, RF-P50D, Battery Operated Pocket Radio
Panasonic AM/FM Portable Radio, RF-P50D, Battery Operated Pocket Radio
Price:
18.49 USD
Ends:
Jun 02, 05:56 pm
360° 1080P IP E27 Light Bulb Camera Wi-Fi IR Night Smart Home Wireless Security
360° 1080P IP E27 Light Bulb Camera Wi-Fi IR Night Smart Home Wireless Security
Price:
29.87 USD
Ends:
May 24, 07:31 pm
Car Stereo Wiring Harness Adapter Cable Radio Install Plug For Nissan 70-7552 US
Car Stereo Wiring Harness Adapter Cable Radio Install Plug For Nissan 70-7552 US
Price:
6.90 USD
Ends:
May 28, 03:53 am
BaoFeng UV-5R V/UHF Dual Band Two-way Walkie-Talkie 136-174/400-520MHz Ham Radio
BaoFeng UV-5R V/UHF Dual Band Two-way Walkie-Talkie 136-174/400-520MHz Ham Radio
Price:
26.99 USD
Ends:
Jun 02, 06:16 am
Lenovo Legion 5 15.6
Lenovo Legion 5 15.6" 240Hz Core i7-10750H 16GB RAM 512GB SSD+ 1TB HDD RTX 2060
Price:
799.99 USD
Ends:
Jun 08, 06:05 am
Cobra Electronics 29 LTD Chrome Certified Refurbished Professional CB Radio
Cobra Electronics 29 LTD Chrome Certified Refurbished Professional CB Radio
Price:
99.99 USD
Ends:
Jun 08, 07:17 pm
Apple iPhone X 64GB Factory Unlocked Phone - Very Good
Apple iPhone X 64GB Factory Unlocked Phone - Very Good
Price:
209.95 USD
Ends:
May 25, 09:09 pm
Samsung Galaxy Buds Pro R190 Wireless Bluetooth In-Ear Earbuds Phantom Black
Samsung Galaxy Buds Pro R190 Wireless Bluetooth In-Ear Earbuds Phantom Black
Price:
80.95 USD
Ends:
Jun 04, 11:35 pm
Motorola Talkabout T801 Two-Way Radio, 35 Mile, 2 Pack, Bluetooth, Black & Green
Motorola Talkabout T801 Two-Way Radio, 35 Mile, 2 Pack, Bluetooth, Black & Green
Price:
74.99 USD
Ends:
Jun 12, 08:37 pm
2.4GHz Wireless Optical Mouse Mice & USB Receiver For PC Laptop Computer DPI USA
2.4GHz Wireless Optical Mouse Mice & USB Receiver For PC Laptop Computer DPI USA
Price:
6.85 USD
Ends:
Jun 20, 09:09 pm
Liquid Silicone Case Camera Lens Cover For iPhone 13 12 11 Pro XS Max XR 8 Plus
Liquid Silicone Case Camera Lens Cover For iPhone 13 12 11 Pro XS Max XR 8 Plus
Price:
5.95 USD
Ends:
Jun 18, 10:28 pm
Radio Double Din Dash Install Bezel Kit Silver Slate Gray Fits 2006-09 Dodge Ram
Radio Double Din Dash Install Bezel Kit Silver Slate Gray Fits 2006-09 Dodge Ram
Price:
60.98 USD
Ends:
May 24, 08:28 am
Bluetooth Car FM Transmitter MP3 Player Hands free Radio Adapter Kit USB Charger
Bluetooth Car FM Transmitter MP3 Player Hands free Radio Adapter Kit USB Charger
Price:
16.98 USD
Ends:
Jun 12, 07:15 pm
mophie Juice Pack Access 2,000mAh Battery Case Wireless for iPhone 11 Pro - Red
mophie Juice Pack Access 2,000mAh Battery Case Wireless for iPhone 11 Pro - Red
Price:
7.99 USD
Ends:
Jun 06, 05:53 pm
Radio Double Din Dash Install Bezel Kit Fits 2006-09 Dodge Ram Silver Slate Grey
Radio Double Din Dash Install Bezel Kit Fits 2006-09 Dodge Ram Silver Slate Grey
Price:
60.99 USD
Ends:
Jun 11, 07:15 am
Bluetooth 5.0 Car Wireless FM Transmitter Adapter 2USB PD Charger AUX Hands-Free
Bluetooth 5.0 Car Wireless FM Transmitter Adapter 2USB PD Charger AUX Hands-Free
Price:
9.95 USD
Ends:
Jun 09, 03:07 am
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