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Linux Based Receivers
Linux Receivers General
Using Linux Receivers To Create Signal Graphs
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<blockquote data-quote="Waveguide" data-source="post: 859336" data-attributes="member: 364636"><p>I threw your measurements in my number crunching machine together with my own </p><p>measurements and this is what came out:</p><p>There is a perfect correlation between differences in signal levels and the beams.</p><p>The figures are averages for all transponders on each beam but min. and max. values</p><p>differ a single decibel so the average is representative for each transponder.</p><p>(<strong>Beam names</strong> from Lyngsat, negative values mean my levels are lower)</p><p> </p><p><strong>Southern Europe & Europe</strong>: -2,0 dB</p><p><strong>Northern Europe</strong>: -0,6 dB</p><p><strong>Super</strong>: +2,0 dB</p><p><strong>Pan Europe</strong>: +4,6 dB</p><p> </p><p>My dish is aimed at Astra 2F so I used the left column in your data.</p><p>I have a splitter that feeds some test equipment so I expect some additional loss</p><p>from that but it should not be frequency dependent.</p><p> </p><p>Satellite images were made with a Canon 7D and a 100mm / f2,0 lens.</p><p>A really stable tripod and a remote control is a must. The important part are all the settings</p><p>to minimize noise and hot pixels. Light pollution can make things even worse and the final</p><p>editing can remove some but not all imperfections. Did I mention that focusing is a bitch?</p></blockquote><p></p>
[QUOTE="Waveguide, post: 859336, member: 364636"] I threw your measurements in my number crunching machine together with my own measurements and this is what came out: There is a perfect correlation between differences in signal levels and the beams. The figures are averages for all transponders on each beam but min. and max. values differ a single decibel so the average is representative for each transponder. ([B]Beam names[/B] from Lyngsat, negative values mean my levels are lower) [B]Southern Europe & Europe[/B]: -2,0 dB [B]Northern Europe[/B]: -0,6 dB [B]Super[/B]: +2,0 dB [B]Pan Europe[/B]: +4,6 dB My dish is aimed at Astra 2F so I used the left column in your data. I have a splitter that feeds some test equipment so I expect some additional loss from that but it should not be frequency dependent. Satellite images were made with a Canon 7D and a 100mm / f2,0 lens. A really stable tripod and a remote control is a must. The important part are all the settings to minimize noise and hot pixels. Light pollution can make things even worse and the final editing can remove some but not all imperfections. Did I mention that focusing is a bitch? [/QUOTE]
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Linux Based Receivers
Linux Receivers General
Using Linux Receivers To Create Signal Graphs
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