| Universal LNB |
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Coming in Rf-signals reinforce the LNB and put these for on a low frequency link, satellite - intermediate the frequency range (satellite-IF), which lies between 950 and 2150 MHz. The conversion of the frequency and the strengthening by the LNB must take place without to that unnecessary noise is added. The noise which is produced within the LNB calls we the noise value. For LNB avoid the standard value 1dB. that too strong indicators arise at the entrance of the satellite recipient, can the strengthening factor of the LNB is not higher be than 60Db. a too strong indicator can lead to inter modulation (distortion of indicators by mutual influence of higher and lower frequencies). All frequencies to be able receive of 10.70 to 12.75GHz universal LNB are necessary. The universal LNB have two oscillators : 9.75GHz for the low link and 10.60 GHz for the high link. Using a wheel indicator of 22kHz, of the satellite recipient, the correct link is chosen. Vertical and horizontal polarisations are stipulated by 13 and 18Volt the wheel tension, also originating from the satellite recipient. DTH - reception with universal LNB Universal LNB are essential for the reception of all indicators of a satellite reception system.
 Single LNB On the universal single LNB only one satellite recipient can be connected. , have some digital recipients If-loop, with which both a digital and analogue recipient on a single LNB can be connected. Also in this case is possible however but one recipient is used at the same time. Twin LNB On the two terminations of universal Twin LNB two recipients can be connected, who function independently of each other. This way the television viewer can look at a certain programme, whereas he - for example - takes an other programme on video. Quad LNB These LNB offer the possibility of up to four termination points for satellite reception, which independently of each other can be used for television -, radio - or multimedia use. Quatro LNB The universal Guatro LNB has four terminations, with which both polarisations and frequency links are passed on at the same time. The four terminations are connected on the entrances of multi switch, with which distribution of all programme indicators becomes to several recipients possible. Pay attention to that the four terminations to the correct entrances of the multi switch are connected.
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