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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
Very poor reception 1.2m dish in Madrid
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<blockquote data-quote="dxsat" data-source="post: 511465" data-attributes="member: 193607"><p>Not sure I understand your question.</p><p>There is an issue with feedhorn diameter that Invacom have answered on their FAQ:</p><p></p><p>"Q I notice that the inside diameter of the waveguide on the SNF-031 is 18.5mm. My feed horn has a diameter of 19.5mm. </p><p></p><p>Is this 1mm change important?</p><p></p><p></p><p>A Yes it can be. The step will have little affect on the loss, however it can degrade the cross polar performance of the dish/LNB combination. If you are trying to receive weak signals from a satellite that also has strong signals, the cross polar isolation is important."</p></blockquote><p></p>
[QUOTE="dxsat, post: 511465, member: 193607"] Not sure I understand your question. There is an issue with feedhorn diameter that Invacom have answered on their FAQ: "Q I notice that the inside diameter of the waveguide on the SNF-031 is 18.5mm. My feed horn has a diameter of 19.5mm. Is this 1mm change important? A Yes it can be. The step will have little affect on the loss, however it can degrade the cross polar performance of the dish/LNB combination. If you are trying to receive weak signals from a satellite that also has strong signals, the cross polar isolation is important." [/QUOTE]
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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
Very poor reception 1.2m dish in Madrid
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