Editing Low-noise block downconverter (section)

=== Quattro LNBs ===
A special type of LNB (not to be confused with Quad LNB) intended for use in a shared dish installation to deliver signals to any number of tuners. A quattro LNB has a single feedhorn and four outputs, which each supply just one of the K<sub>u</sub> sub-bands (low band/horizontal polarization, high band/vertical polarization, low/vertical and high/horizontal) to a [[multiswitch]] or an array of multiswitches, which then delivers to each connected tuner whichever sub-band is required by that tuner.<ref>{{cite web|url=http://www.onastra.com/288905/glossary?category=q|title=Astra Glossary - Quattro LNB|publisher=SES ASTRA|access-date=December 30, 2010|archive-date=July 15, 2011|archive-url=https://web.archive.org/web/20110715002315/http://www.onastra.com/288905/glossary?category=q|url-status=live}}</ref>

Although a quattro LNB typically looks similar to a quad LNB, it cannot (sensibly) be connected to receivers directly. Note again the difference between a quad and a quattro LNB: A quad LNB can drive four tuners directly, with each output providing signals from the entire K<sub>u</sub> band. A quattro LNB is for connection to a multiswitch in a shared dish distribution system and each output provides only a quarter of the K<sub>u</sub> band signals.

[[Image:Unicable.jpg|120px|thumb|SCR LNB with three SCR taps for daisy-chaining multiple tuners]]