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The length of a whip antenna is determined by the wavelength of the radio waves it is used with. Their length varies from compact electrically short antennas 1 / 10 wavelength long, up to 5 / 8 wavelength to improve directivity. The most common type is the quarter-wave whip, which is approximately 1 / 4 wavelength long.
[46] [47] Merseyside Police caught a car thief with a UAV in 2010, but had to stop UAV operations a week later as the UAV was not licensed. Regulations introduced at the start of 2010 required any aerial surveillance by unmanned aircraft—no matter the size of the drone—to be licensed.
Watch live aerial views of the Francis Scott Key Bridge in Baltimore, Maryland, after it collapsed in the early hours of Tuesday morning (26 March). A container ship crashed into the structure at ...
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An Aerial base station (ABS), also known as unmanned aerial vehicle (UAV)-mounted base station (BS), is a flying antenna system that works as a hub between the backhaul network and the access network.
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Watch live aerial view of the California wildfires on Saturday (11 January) as the deadly blazes continue to rage. Officials continue to battle the stubborn blazes eating up more than 35,000 acres ...
In the summer of 1895, Marconi began testing his wireless system outdoors on his father's estate near Bologna and soon began to experiment with long wire "aerials" suspended from a pole. [5] In Italian a tent pole is known as l'antenna centrale, and the pole with the wire was simply called l'antenna. Until then wireless radiating transmitting ...