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Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 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.
Kids Walkie Talkies Retevis RT388 Christmas gift Parent-child Educational toys
Kids Walkie Talkies Retevis RT388 Christmas gift Parent-child Educational toys
Price:
9.99 USD
Ends:
Aug 01, 01:41 am
TYT TH-UV88 Talkie Walkie VHF/UHF Dual Band Analog Two-Way Radio      US Seller
TYT TH-UV88 Talkie Walkie VHF/UHF Dual Band Analog Two-Way Radio US Seller
Price:
39.90 USD
Ends:
Jul 18, 01:13 am
Baofeng UV-9R Plus VHF UHF Walkie Talkie Dual-Band Ham Handheld Two-way Radio
Baofeng UV-9R Plus VHF UHF Walkie Talkie Dual-Band Ham Handheld Two-way Radio
Price:
33.99 USD
Ends:
Jul 29, 03:17 am
Police Fire Radio Two Way Scanner Transceiver Handheld Portable F-Antenna HAM
Police Fire Radio Two Way Scanner Transceiver Handheld Portable F-Antenna HAM
Price:
25.99 USD
Ends:
Jul 24, 08:37 am
6x Baofeng BF-888S 16Channel 5W CTCSS Two-way Ham Radio Walkie Talkie
6x Baofeng BF-888S 16Channel 5W CTCSS Two-way Ham Radio Walkie Talkie
Price:
69.99 USD
Ends:
Jul 10, 02:03 am
Motorola Talkabout T600 Two-Way Radio 2-Pack Set / Walkie Talkies Rechargeable
Motorola Talkabout T600 Two-Way Radio 2-Pack Set / Walkie Talkies Rechargeable
Price:
103.00 USD
Ends:
Jul 06, 10:31 am
Kenwood NX-5800K mobile radio
Kenwood NX-5800K mobile radio
Price:
650.00 USD
Ends:
Aug 03, 11:13 am
Baofeng UV-5R VHF UHF Dual-Band Ham 5W Portable Waterproof Radio Walkie Talkie
Baofeng UV-5R VHF UHF Dual-Band Ham 5W Portable Waterproof Radio Walkie Talkie
Price:
24.82 USD
Ends:
Jul 24, 09:21 am
10x Baofeng BF-888S 2800mAh Two Way Radio UHF 400-470MHz 16CH Walkie Talkie US
10x Baofeng BF-888S 2800mAh Two Way Radio UHF 400-470MHz 16CH Walkie Talkie US
Price:
115.99 USD
Ends:
Jul 21, 09:05 am
Arcshell Rechargeable Long Range TWO-WAY Walkie Talkie Radios (4 PACK) 
Arcshell Rechargeable Long Range TWO-WAY Walkie Talkie Radios (4 PACK) 
Price:
0.99 USD
Ends:
Jul 10, 07:01 pm
baofeng uv-5r
baofeng uv-5r
Price:
20.00 USD
Ends:
Aug 03, 08:42 pm
Baofeng T1 Mini Two way Radio BF-T1 UHF VOX 20CH FM Transceiver Walkie Talkie
Baofeng T1 Mini Two way Radio BF-T1 UHF VOX 20CH FM Transceiver Walkie Talkie
Price:
21.00 USD
Ends:
Jul 28, 03:47 am
USED 6 Pack DEWALT DXFRS800 22-Channel Two-Way Radios w/6 gang base.
USED 6 Pack DEWALT DXFRS800 22-Channel Two-Way Radios w/6 gang base.
Price:
369.99 USD
Ends:
Jul 20, 07:18 pm
Motorola RDX RDU4100 Two Way Radio W/out charger.
Motorola RDX RDU4100 Two Way Radio W/out charger.
Price:
75.50 USD
Ends:
Aug 04, 02:19 am
Cobra CXT1095 FLT 22-Channel Waterproof Walkie Talkie 2-Way Radio
Cobra CXT1095 FLT 22-Channel Waterproof Walkie Talkie 2-Way Radio
Price:
32.99 USD
Ends:
Aug 03, 08:26 pm
Motorola Talkabout T800 Two-Way Radio, 35 Mile, 2 Pack, Bluetooth, Black & Blue
Motorola Talkabout T800 Two-Way Radio, 35 Mile, 2 Pack, Bluetooth, Black & Blue
Price:
72.00 USD
Ends:
Jul 10, 03:50 pm
Radioddity DB25-G GMRS Mobile Radio 25W Two Way Radio Long Range Quad Watch
Radioddity DB25-G GMRS Mobile Radio 25W Two Way Radio Long Range Quad Watch
Price:
119.99 USD
Ends:
Jul 09, 06:34 am
Motorola HT 90 Two Way Portable Radio UHF With Charger , And Battery
Motorola HT 90 Two Way Portable Radio UHF With Charger , And Battery
Price:
18.88 USD
Ends:
Aug 04, 12:32 am
Rocky Talkie - 2 communicator radios - Hiking, Outdoors, Mountains
Rocky Talkie - 2 communicator radios - Hiking, Outdoors, Mountains
Price:
199.00 USD
Ends:
Jul 20, 05:41 pm
Lot of 4 Motorola Radius Two Way Radio CP200 AAH50RDC9AA2AN UHF
Lot of 4 Motorola Radius Two Way Radio CP200 AAH50RDC9AA2AN UHF
Price:
103.50 USD
Ends:
Jul 09, 10:44 am
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