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Selective tuning is the process by which the radio frequency (RF) of the television channel is selected by a receiver from within a band of transmitted RF signals. The tuner usually performs the function of frequency-agile selection, along with rejection of unwanted out-of-band signals.
The Fire TV Recast is a digital video recorder that works with an over-the-air antenna to record shows for later viewing on a Fire TV or an Amazon Echo Show device. [ 53 ] [ 54 ] It was announced in September 2018 and began shipping in the United States on November 14, 2018.
Some portable televisions use a whip antenna. [6] This consists of a single telescoping rod about a meter (3.3 feet) long attached to the television, which can be retracted when not in use. It functions as a quarter-wave monopole antenna. The other side of the feedline is connected to the ground plane on the TV's circuit board, which acts as ...
Fire TV (box) [1] [2] Fire TV Stick Fire TV (box) [3] [2] Fire TV Stick Fire TV (pendant) [4] [5] Fire TV Cube Fire TV Stick 4K [2] Fire TV Cube Fire TV Stick Fire TV Stick 4K Max Fire TV Cube Fire TV Stick 4K Fire TV Stick 4K Max Fire TV Stick HD Model generation 1st 1st 2nd 2nd 3rd 1st 1st 2nd 3rd 1st 3rd 2nd 2nd Code name Bueller Montoya ...
An antenna tuner, a matchbox, transmatch, antenna tuning unit (ATU), antenna coupler, or feedline coupler is a device connected between a radio transmitter or receiver and its antenna to improve power transfer between them by matching the impedance of the radio to the antenna's feedline. Antenna tuners are particularly important for use with ...
All equipment using RF electronics should be inside a screened conductive box and all connections in or out of the box should be filtered to avoid the passage of radio signals. A common and effective method of doing so for wires carrying DC supplies, 50/60 Hz AC connections, audio and control signals is to use a feedthrough capacitor , whose ...
An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves. [ 1 ] : p.149 [ 2 ] The individual antennas (called elements ) are usually connected to a single receiver or transmitter by feedlines that feed the power to the elements in a specific phase ...
A transmatch (antenna tuner) is not required to use this antenna near its nominal design frequency of 14 MHz, and judicious length adjustments can sometimes include one other frequency band. All other frequencies require a transmatch. [citation needed] There are many variants of the G5RV antenna. Two variations of the G5RV design, called ZS6BKW ...