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They are in use all over the world but they are used less for TV in areas wired for cable TV.

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10y ago

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What are the parts of an yugi-uda antenna?

directors and receivers are the main part of a yagi uda anteena there can be many directors and receivers as more receivers will surely increase our gain but we use only one receiver because the gain will not increase much but the cost will surel increase


Do people still use television antennas?

Most people currently have television that do not have antennas because it was required the you get a booster box to pick up certain channels. Howevere, they're are still people that do use antennas.


Why does the dragon fly use there Antennas for?

to feel


Do carpenter ants have antennas and how do they use them in their daily activities?

Yes, carpenter ants have antennas. They use their antennas to sense their surroundings, communicate with other ants, and navigate their environment. The antennas help them detect chemicals, vibrations, and pheromones, which are important for foraging, finding food, and communicating with other members of the colony.


Why are satillites antennas curved?

Satellite antennas are typically curved to allow them to receive signals from a wider range of directions. This is due to the fact that the curved surface increases the gain of the antenna allowing it to better receive signals from any direction. Curved antennas also help reduce the amount of noise that is picked up resulting in a clearer signal. Additionally curved antennas often have a larger reception area than straight antennas which allows them to pick up a wider range of frequencies. There are a few different types of curved antennas that are used for satellite communications. The most common type is the parabolic antenna which is made up of a parabolic reflector and a feed horn. This type of antenna is highly directional meaning that it can focus on one particular satellite in the sky. Other types of curved antennas include Yagi antennas which can receive signals from a number of different directions and helical antennas which are used for receiving signals from a single satellite. The use of curved antennas in satellite communication systems has numerous advantages. They allow for a wider range of frequencies to be received resulting in a clearer signal. They also reduce noise resulting in a clearer signal. Lastly curved antennas are often more efficient than straight antennas meaning that they can pick up signals from further away.


What are digital tv antennas used for?

The digital TV antennas were made when the analog satellites for TVs went to a Digital satellite. With a converter box and the digital antennas it still makes it possible to use TV that still use the old rabbit ears.


How does yagi-uda antenna differ from a folded dipole a loop antenna and a helical antenna?

Wow, your question on how a yagi-uda differs from a folded dipole, a loop antenna, and a helical antenna relates very much to how does a lawn mower engine relate to a V-8. The principals in all the antennas remains much the same. So I will deal with them in the order asked. The Yagi in its simplest form consists of 3 elements. The center element is the driven element and is essentially a dipole. Behind it is a slightly larger element called a reflector which does just that, it reflects signals to and from the dipole and in front there is the smaller director which helps focus energy. This is a directional antenna with gain. The folded dipole goes back to the basic dipole except it has makes a full loop. They are just as about as long as regular dipoles. With the loop of wire out there, they tend to have a wider band width than regular dipoles - but are not as tolerant of being used at even multiples of their cut frequency as the wires tend to cancel out each other. Oh, btw, yagi's have been made using folded dipoles. You must use ladder line or a 4:1 balun on folded dipoles, with perhaps the exception of the terminated folded dipole which has a resistor where the two elements of the dipole come together. The loop antenna? Which loop? I assume you are talking the traditional loop and not the magnetic loop. The full loop is normally computed to be 1005/frequency=feet. While you could take the time to tune the antenna, it might just be easier to put in a balun and an antenna tuner. The main advantage of a loop over the previous reviewed antennas is that it does fairly well even though fairly close to the ground where the previous 2 antennas should be at least 1/2 a wave length up for good performance. Helical antennas are generally good for just one band. In fact, due to the loading they cause they are best if used on a single frequency as their feed line requires them to be provided the connecting feed the is the electrical equivalent of a 1/2 wave at that frequency of operation. This may work well at VHF and above as an entire band can be tuned satisfactory, but in HF it would limit you to a very small segment of the band. Helical antennas definitely are the lawn mower engines of the antenna world. Look up antenna elmer on your favorite search engine. You have entered into a world where there is still a lot homework left to be done.


How the crab use their antennas?

chemoreception and taste you uber noob!


What purpose do spiders with antennas serve in their environment?

Spiders with antennas use them to sense their surroundings, helping them navigate, find food, and detect potential threats.


What do cellular networks use directional antennas to form?

a network of cells


Why do some trucks have big antennas?

They use Citizens' Band Radio (CB) to communicate with other truckers on the road. The long antennas give them better reception and transmission.


What animal has antennas and lives in water?

lobsters water beetles molluscs