What is a Multi-Switch?
A multi-switch is a device used to split the KU bandwidth signal from a satellite television dish and distribute it to multiple receivers. Multi-switches are commonly used to distribute the signal from one satellite dish to apartment building units or office buildings.
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The Signal
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The signal is sent from the dish's LNB to the multi-switch. A set of parabolic dish antennas receive KU bandwidth signals from the satellite and feed it into your building. This 10 to 12.5 GHz signal is fed into the multi-switch, which then distributes it to separate receivers.
LNB
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The LNB scans for the satellite signal. Each of the dishes in the system is equipped with either a horizontal or vertical transponder Low Noise Block converter. The multi-switch contains signal splitters and A/B switches, according to Scatmag.com,. The incoming signals are divided to create the digital TV signal for each apartment or office connected to the multi-switch.
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Passive and Active
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Passive multi-switches are best used for small systems without long stretches of coaxial cable between the system elements. Because long cables can degrade the signal strength, active multi-switches use external power to operate the switches inside and may also contain solid state amplifiers to boost signal strength
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References
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- Photo Credit Parabolic 3 image by Alfonso de Tomás from Fotolia.com dual lnb di una parabola image by domyre from Fotolia.com
