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Which LNB?The LNB is the device at the end of a satellite dish which 'translates' and sends the signal to the receiver. An LNB is essential to receive a satellite signal for Freesat, Free to Air and FTV satellite. The type of LNB you require will depend on the type and quantity of receivers and the type of satellite dish to be used. When choosing an LNB there are two questions to be asked; How many outputs? The number of outputs required will depend on how many satellite receivers you have and whether they have recording facilities, as in the case of Sky Plus and Freesat Plus boxes. This is because receivers with recording facilities require two satellite feeds, one for the image you are watching and one for the image you are recording, and so an LNB with multiple outputs is required. More satellite feeds means more signal being 'pulled' from the satellite dish so you may find that signal break up is a problem when an octo or quad is used with a smaller satellite dish. For this reason we suggest a minimum of a 50cm dish with a quad LNB and a 60cm dish with an octo LNB. As the names suggest a single LNB has one output, a twin LNB has two, a quad LNB has four and an octo LNB has eight outputs. What type of LNB? LNB's are available in several varations; Universal LNB's are suitable for the more circular satellite dishes such as our Triax TD range. Great for signals from virtually any satellite (assuming correct dish size and location). This type of LNB normaly has a 40mm dia. neck fitting and is not suitable for the Sky type eliptical dishes. Sky type LNB's are designed for use with eliptical, 'Sky type' mesh dishes such as our Sky / Freesat dishes, ideal for most uses in the UK. They are not suitable for rounder universal type dishes. Prime focus LNB's should be used with prime focus satellite dishes, these are usually very large dishes and tend to have three 'prongs' pretruding from the edge of the dish to the LNB holder, which is centre mounted. If the existing dish does not have a feed horn, one will also be required. Quattro LNB's have four outputs which, together, supply a full satellite signal to a multiswitch. The multiswitch then has a varying number of outputs (up to 32) which are fed to the receivers, one feed for each standard satellite receiver, Sky box, or Freesat box and two feeds for each Sky Plus box, Freesat Plus box or PVR satellite receiver. Using a Quattro LNB means using a standard satellite dish, rather than an eliptical, Sky type dish or Sky mini dish.
A list of possible LNB and receiver combinations is shown below.
Single LNB; One satellite receiver or Freesat box Twin LNB; Two satellite receivers or Freesat boxes OR One PVR receiver or Freesat Plus box Quad LNB; Four standard satellite receivers or Freesat boxes OR One PVR receiver or Freesat Plus box and two satellite receivers or Freesat boxes OR Two PVR receivers or Freesat Plus boxes Octo LNB; Eight satellite receivers or Freesat boxes OR Two satellite receivers or Freesat boxes and three PVR receivers or Freesat Plus boxes OR Four satellite receivers or Freesat boxes and two PVR receivers or Freesat Plus boxes OR Six satellite receivers or Freesat boxes and one PVR receiver or Freesat Plus box OR Four PVR receivers or Freesat Plus boxes
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