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Radiation resistance is that part of an antenna 's feedpoint electrical resistance caused by the emission of radio waves from the antenna. [ a][ 1][ 2] A radio transmitter applies a radio frequency alternating current to an antenna, which radiates the energy of the current as radio waves. Because the antenna is absorbing the energy it is ...
Television is one of the major mass media outlets in the United States. In 2011, 96.7% of households owned television sets; [ 1] about 114,200,000 American households owned at least one television set each in August 2013. [ 2] Most households have more than one set. The percentage of households owning at least one television set peaked at 98.4% ...
Antenna gain-to-noise-temperature ( G/T) is a figure of merit in the characterization of antenna performance, where G is the antenna gain in decibels at the receive frequency, and T is the equivalent noise temperature of the receiving system in kelvins. The receiving system noise temperature is the summation of the antenna noise temperature and ...
Mast radiators can also be built as free-standing lattice towers, wide at the bottom for stability, narrowing to a slender mast. [4] The advantage of this construction is the elimination of guy lines and thus reduction in land area required. These towers can have a triangular or a square cross section, with each leg supported on an insulator.
Collinear dipole array on repeater for radio station JOHG-FM on Mt. Shibisan, Kagoshima, Japan. In telecommunications, a collinear antenna array (sometimes spelled colinear antenna array) is an array of dipole or quarter-wave antennas mounted in such a manner that the corresponding elements of each antenna are parallel and collinear; that is, they are located along a common axis.
A critical eye to America’s progressive income tax system. The plan was first published as a book back in 2023, and the section on tax policy that begins on page 695 was authored by Moore ...
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[11] [18] In September 2017, Oxygen and USA Network acquired off-network reruns of Chicago P.D., which were added to their schedules in October 2017. [19] [20] On May 2, 2022, NBC Owned Television Stations began to carry Oxygen as a subchannel on digital terrestrial television, primarily on NBC and Telemundo owned and operated stations. [21] [22]
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