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well heres one answer- its possible the aliens out there are interfering with our equipment! Hows that for an answer!
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What is a use for a satellites?
A satellite system can be used for a variety of purposes. On the consumer market, it is mostly used for reception of television signals. It is also often used for broadband internet when there is no cable or ADSL available. When travelling in remote areas with no cellphone reception, it can also be used for telephone calls.
Looking At Satellite Television?
Far from earth, orbiting in the atmosphere, are communications satellites. Signals from earth are sent to these satellites. A broadcasting service that allows a subscriber to obtain television signals through a dish shaped object is known as satellite television. The signals received from communications satellites are scrambled electronically to prevent them from being used unless a subscription fee is being paid. With their subscription, a consumer receives both a descrambler and a receiving dish. These systems are almost completely free of wires. Original television stations broadcast signal in radio wave bands. Antennas placed on televisions or on the roof of a home received the transmissions of these waves, but the quality of the picture on the set depended on the strength of the signal. Atmosphere conditions and the amount of distance from the stations would sometimes create poor results.Some HistoryOlder satellite television systems consisted of extremely large dishes that pulled distant signals in to a powered antenna. Each television channel was located on a separate communications satellite. The dish would have to be turned or cranked physically to certain points in the sky to receive the correct signals. Regulation of these dishes was not monitored closely, and illegal descramblers could electronically pull in signals, thus creating a very profitable underground market. These illegal descramblers promoted the subscription satellite services that are available today.Satellite ProvidersThere are many different satellite television providers today. Their services are especially present in many rural areas where there is no cable television service. These different customers are widely advertised and most have 24-hour customer service departments. After placing an order for service, the provider one has chosen will send a trained technician to install and set up the system in the home. Multiple receivers are often a choice of many consumers, as more than one television is generally in the home.ReceptionFor the best reception of signal, a clear line of sight is imperative. Something as simple as a stand of trees or a hill can block the signal. Some consumers often complain of loss of signal during a heavy down pour of rain or snowfall. The overall clarity of the digital signal pleases most all satellite television customers. They also find the wide variety of channels and the option to purchase many pay per view events a plus. Each satellite provider offers different channel packages. The more channels your package contains the higher your monthly subscription bill will be.
Do satellite dishes provide better reception than cable service?
I believe that satellite dishes do provide better reception than cable service. I believe this because satellite dishes are bigger and getting their signals from huge satellites in space. They have less interference factors that affect them than cable service does and they are less likely to go off air as often happens with cable service. Satellite dishes also offer all HD channels where as with cable you have to pay an extra fee for HD many times. I think that satellite dishes receive stronger signals and are better equipped to interpret those signals than cable service is. I also believe that the satellite signals are jumbled less often than cable tv and because of this you get a clearer picture and more channels.
What is a modulator along with a VCR?
Television signals are transmitted on a high frequency (or RF) carrier signal. The technique of adding the signal to the carrier signal is called modulation. This happens for all radio transmissions. A VCR that has a modulator allows the output signal to be turned into an RF signal. The signal is added to the RF signals that are fed into the VCR via the aerial feed. Although it is rarely needed today, older televisions often had no video or audio input so the VCR output could be sent to the television as RF to allow the tuner to capture and display the signal. Most VCR modulators have a control to adjust the carrier frequency to allow it to use a channel that is not use by other broadcast television signals. Modulators are used less often in recorders and players as virtually all televisions have at least one video input.
Can you get Americian cable television from a home satellite dish in Australia?
No. Australia is "over the horizon" from satellites that are aimed at the USA so it is not possible. Having said that it is often possible to view the same programmes on channels all over the world but obviously at different times!
What is component signal?
A component video signal uses three separate channels or wires to deliver a complete color television signal. One of the three carries brightness information, known as the "luma" signal. The color information, known as "chroma" is carried on the other two signals. Component video is used in production and broadcast environments as it delivers the best possible quality. Although broadcast has almost completely moved to digital signals, the signal format is still component. Domestic applications often use composite signals, a single wire that carries both luma and chroma signals although component is provided on some equipment. RGB (red, green, blue)signals are often referred to as component. The two are different and are not compatible.
What is component video signal?
A component video signal uses three separate channels or wires to deliver a complete color television signal. One of the three carries brightness information, known as the "luma" signal. The color information, known as "chroma" is carried on the other two signals. Component video is used in production and broadcast environments as it delivers the best possible quality. Although broadcast has almost completely moved to digital signals, the signal format is still component. Domestic applications often use composite signals, a single wire that carries both luma and chroma signals although component is provided on some equipment. RGB (red, green, blue)signals are often referred to as component. The two are different and are not compatible.
What are the signals that are transmitted to and from wireless electronic devices carried on?
Radiofrequency (RF) Signals: RF signals are used in various wireless communication technologies, including: Cellular networks: Mobile phones use RF signals to communicate with cell towers. Wi-Fi (Wireless Fidelity): Wi-Fi devices, such as smartphones, laptops, and routers, use RF signals to connect to local wireless networks. Bluetooth: Bluetooth-enabled devices, like headphones, speakers, and smartphones, use RF signals for short-range wireless connections. Zigbee: Zigbee is a wireless communication protocol commonly used in smart home devices like smart lights, thermostats, and sensors. NFC (Near Field Communication): NFC technology allows devices to exchange data over very short distances, often used for contactless payments and device pairing. Infrared (IR) Signals: Infrared signals are used for short-range communication between devices that have IR transmitters and receivers. TV remote controls are a common example of devices that use IR signals. GPS Signals: Global Positioning System (GPS) devices receive signals from multiple satellites to determine their precise location and provide navigation information. GPS signals are crucial for location-based services and navigation applications.
What technology uses a receiver?
Any kind of communication technology uses a receiver, for example a mobile phone uses a radio receiver to pick up signals from the cell tower, and in the same way the cell tower requires a receiver to take signals back from the phone. Broadcast technology most often uses receivers on their own, for example a terrestrial television receiver is build into most TVs and satellite receivers in Sky TV boxes. FM, DAB and all other kinds of radios also use receivers.
Were the tv's in the 1920s clear?
Clear to watch?Usually not. Early broadcast TV had multiple difficulties such as channel overlap, interference, and signal loss because of their relatively low power output. The signals were analog, like radio, not digital. The best signals were obtained in areas that were closer to the broadcast facility, and used large antennas. Even so, there was often static ("snow") and dropped signals, as most TVs did not have the frequency filters that are used on modern TVs.Transparent?The cabinets were usually sealed and opaque, made of wood and metal. The tubes used in the electronics were clear, except for the shielded base of the CRT and the phosphor coating on the inside of the screen.
Were the tv's clear in 1920s?
Clear to watch?Usually not. Early broadcast TV had multiple difficulties such as channel overlap, interference, and signal loss because of their relatively low power output. The signals were analog, like radio, not digital. The best signals were obtained in areas that were closer to the broadcast facility, and used large antennas. Even so, there was often static ("snow") and dropped signals, as most TVs did not have the frequency filters that are used on modern TVs.Transparent?The cabinets were usually sealed and opaque, made of wood and metal. The tubes used in the electronics were clear, except for the shielded base of the CRT and the phosphor coating on the inside of the screen.
Why electrical signals in the body are often based on ions?
Electrical signals in the body are often based on ions because ions are charged particles.
