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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.
Baofeng UV-5R+ VHF/UHF 2m/70cm Dual Band DTMF Dual-Dand FM Ham Two way Radio US
Baofeng UV-5R+ VHF/UHF 2m/70cm Dual Band DTMF Dual-Dand FM Ham Two way Radio US
Price:
26.59 USD
Ends:
Aug 03, 10:04 am
1 Bids
Motorola HT750 UHF 450-512 MHz Radio,16 Ch, 4W, AAH25SDC9AA3AN, Works Fine
Motorola HT750 UHF 450-512 MHz Radio,16 Ch, 4W, AAH25SDC9AA3AN, Works Fine
Price:
15.00 USD
Ends:
Jul 07, 04:13 pm
2 x Baofeng BF-88A Two Way Radio 400-470MHz Walkie Talkie Set with Flashlight
2 x Baofeng BF-88A Two Way Radio 400-470MHz Walkie Talkie Set with Flashlight
Price:
26.99 USD
Ends:
Jul 27, 09:12 am
Baofeng UV-13 PRO Walkie Talkie Add Type-C USB Dual Band Transceiver Ham Radio
Baofeng UV-13 PRO Walkie Talkie Add Type-C USB Dual Band Transceiver Ham Radio
Price:
34.98 USD
Ends:
Jul 25, 09:05 am
Cobra Kids Walkie Talkies, 16 mile Two Way Radio w/ 22 Channels - Pair (Green)
Cobra Kids Walkie Talkies, 16 mile Two Way Radio w/ 22 Channels - Pair (Green)
Price:
10.00 USD
Ends:
Aug 01, 08:43 pm
Cobra ACXT645 35-Mile 22-Channel 2-Way Radios Walkie Talkies - Pair
Cobra ACXT645 35-Mile 22-Channel 2-Way Radios Walkie Talkies - Pair
Price:
39.99 USD
Ends:
Jul 23, 05:21 pm
2 X BAOFENG BF-888S UHF 400-470 MHz 5W CTCSS Two-way Walkie-Talkie Radio
2 X BAOFENG BF-888S UHF 400-470 MHz 5W CTCSS Two-way Walkie-Talkie Radio
Price:
29.99 USD
Ends:
Jul 08, 07:41 am
Ailunce HD1 DMR Walkie Talkie Ham Radio FPP UHF/VHF Digital/Analog IP67
Ailunce HD1 DMR Walkie Talkie Ham Radio FPP UHF/VHF Digital/Analog IP67
Price:
155.19 USD
Ends:
Jul 10, 03:27 am
Motorola Talkabout T200TP Walkie Talkie 6 Pack Set Two Way Radio FREE SHIPPING
Motorola Talkabout T200TP Walkie Talkie 6 Pack Set Two Way Radio FREE SHIPPING
Price:
140.00 USD
Ends:
Jul 06, 10:31 am
Motorola Talkabout Walkie Talkie 3 Pack 25 Mile Two Way Radios NOAA 22 Ch T260TP
Motorola Talkabout Walkie Talkie 3 Pack 25 Mile Two Way Radios NOAA 22 Ch T260TP
Price:
60.00 USD
Ends:
Jul 09, 06:57 pm
 Long Range Walkie Talkie 50 Mile Two Way Charge Waterproof Radio 6 Pack Set
Long Range Walkie Talkie 50 Mile Two Way Charge Waterproof Radio 6 Pack Set
Price:
85.99 USD
Ends:
Jul 23, 05:58 pm
Motorola T100 Talkabout Radio 2 Pack
Motorola T100 Talkabout Radio 2 Pack
Price:
20.00 USD
Ends:
Jul 26, 05:27 pm
Pofung P8UV Dual Band Two way Ham Radio GMRS FCC/CE Ham Walkie Talkie Flashlight
Pofung P8UV Dual Band Two way Ham Radio GMRS FCC/CE Ham Walkie Talkie Flashlight
Price:
17.99 USD
Ends:
Jul 17, 06:20 am
uSDX (tr)uSDX HF Ham Radio QRP Transceiver by PE1NNZ and DL2MAN Official supply
uSDX (tr)uSDX HF Ham Radio QRP Transceiver by PE1NNZ and DL2MAN Official supply
Price:
96.00 USD
Ends:
Jul 22, 10:59 am
2Pack Baofeng BF-888S UHF CTCSS 5W Handheld Two-way Ham Radio HT Walkie Talkie
2Pack Baofeng BF-888S UHF CTCSS 5W Handheld Two-way Ham Radio HT Walkie Talkie
Price:
25.99 USD
Ends:
Jul 23, 10:03 am
BAOFENG UV-5R 2019 Walkie Talkie Dual Band V/UHF 5W Two Way Radio Backlit LCD
BAOFENG UV-5R 2019 Walkie Talkie Dual Band V/UHF 5W Two Way Radio Backlit LCD
Price:
24.95 USD
Ends:
Jul 21, 11:47 am
Retevis RT29 Two Way Radio VHF High Power Long Range 3200mAh 16CH Walkie Talkies
Retevis RT29 Two Way Radio VHF High Power Long Range 3200mAh 16CH Walkie Talkies
Price:
62.95 USD
Ends:
Aug 04, 04:44 am
US 2x Baofeng UV-5R Upgraded GT-5R Dual-Band VHF UHF Transceiver Two-way Radio
US 2x Baofeng UV-5R Upgraded GT-5R Dual-Band VHF UHF Transceiver Two-way Radio
Price:
45.59 USD
Ends:
Aug 03, 06:17 am
BAOFENG UV-5R III Tri-Band Walkie Talkie Long Range Two Way Ham Radio + Earpiece
BAOFENG UV-5R III Tri-Band Walkie Talkie Long Range Two Way Ham Radio + Earpiece
Price:
28.99 USD
Ends:
Jul 22, 05:01 pm
Baofeng AR-152 15W VHF/UHF Military Tactical Two Way Radio 12000mAh Portable
Baofeng AR-152 15W VHF/UHF Military Tactical Two Way Radio 12000mAh Portable
Price:
99.99 USD
Ends:
Jul 14, 09:32 am
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