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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
Astra 2E: Western Europe Reports
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<blockquote data-quote="dmaavrigdo" data-source="post: 1132772" data-attributes="member: 323068"><p>It is the mention of variations in the satellite signal that is relevant not sporadic E.</p><p></p><p>" This is done by analyzing signal amplitude variations of the GPS <em>L</em>1 signal."</p><p></p><p>"experiments in Papua New Guinea which used co-located radiometer and satellite beacon receivers, detected <strong>diurnal</strong> and <strong>seasonal</strong> variations in the received satellite beacon signal level during clear sky that suggested the atmosphere played a role in the signal variation. These effects were termed as atmospheric tides, and could significantly affect the fade margin calculations in low margin systems. Additional evidence supporting the existence of atmospheric tides were found in several time series satellite propagation data collected from sites in North America and in Brazil. This showed that the atmospheric tides phenomenon also affects communications satellite links to temperate regions as well."</p></blockquote><p></p>
[QUOTE="dmaavrigdo, post: 1132772, member: 323068"] It is the mention of variations in the satellite signal that is relevant not sporadic E. " This is done by analyzing signal amplitude variations of the GPS [I]L[/I]1 signal." "experiments in Papua New Guinea which used co-located radiometer and satellite beacon receivers, detected [B]diurnal[/B] and [B]seasonal[/B] variations in the received satellite beacon signal level during clear sky that suggested the atmosphere played a role in the signal variation. These effects were termed as atmospheric tides, and could significantly affect the fade margin calculations in low margin systems. Additional evidence supporting the existence of atmospheric tides were found in several time series satellite propagation data collected from sites in North America and in Brazil. This showed that the atmospheric tides phenomenon also affects communications satellite links to temperate regions as well." [/QUOTE]
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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
Astra 2E: Western Europe Reports
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