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Sky Digital BSkyB, Freesat & Saorsat support forum
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Sky in Madrid and Low band LNB's
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<blockquote data-quote="Channel Hopper" data-source="post: 11623" data-attributes="member: 175144"><p>Youre on the right track I think but for the wrong reason</p><p></p><p>The incoming signals of all satellites at 28 East can be a problem with the input sensitivity of the tuners in some receivers, especially with dishes that are better performers </p><p></p><p>With a Universal LNB the receiver will only select one group of frequencies either low band or high band, depending on the tone applied from the tuner input</p><p></p><p>Swopping for a low band LNB (fixed 9750 MHz only) will not therefore change the incoming signal strength as the receiver is not seeing the rest with the standard universal to start with</p><p></p><p>It could be worth trying a really old 10GHz LNB to see if removing 250MHz of incoming signal helps at the low end but then you are naturally introducing the upper 250MHz because of the Local Oscillator change</p><p></p><p>Best thing would be to look at the incoming signal with a spectrum analyser and see if there are frequences that blast through a s a result of particular features of your system, (poor match of LNB feed to dish, long cable run or kinks in cable, cheap air cored or damaged cable, line amps, F plug problems, etc etc</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 11623, member: 175144"] Youre on the right track I think but for the wrong reason The incoming signals of all satellites at 28 East can be a problem with the input sensitivity of the tuners in some receivers, especially with dishes that are better performers With a Universal LNB the receiver will only select one group of frequencies either low band or high band, depending on the tone applied from the tuner input Swopping for a low band LNB (fixed 9750 MHz only) will not therefore change the incoming signal strength as the receiver is not seeing the rest with the standard universal to start with It could be worth trying a really old 10GHz LNB to see if removing 250MHz of incoming signal helps at the low end but then you are naturally introducing the upper 250MHz because of the Local Oscillator change Best thing would be to look at the incoming signal with a spectrum analyser and see if there are frequences that blast through a s a result of particular features of your system, (poor match of LNB feed to dish, long cable run or kinks in cable, cheap air cored or damaged cable, line amps, F plug problems, etc etc [/QUOTE]
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Sky Digital BSkyB, Freesat & Saorsat support forum
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Sky in Madrid and Low band LNB's
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