(LNB) A low noise block downconverter (LNB), detects the signal relayed from the feed, converts it to an electrical current, amplifies it and lowers its frequency. The downconverted signal is relayed via coax to an indoor satellite receiver.Bs designed to receive C-band satellite signals that usually detect signals in the 3.7 to 4.2 GHz range can be used in most locations around the globe (although some transmissions from the C.I.S. Raduga and Gorizont satellites and Intelsat VI spacecraft are broadcast at frequencies below 3.7 GHz). These have outputs of 950 to 1450 MHz. However, Ku-band LNBs must be mated to the particular frequency range in use. For example, while all or a portion of the 10.950 to 11.700 GHz range is the standard input frequency in Europe, Africa and the Middle East, LNBs used in the Americas must manage signals of 11.700 to 12.200 GHz. While the differences are small, units designed for one area will not function adequately when used in regions having different downlink signal frequencies.

(LNB) A device that amplifies and downconverts the whole 500 Mhz satellite bandwidth at once to an intermediate frequency range.