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Satellite TV receivers & systems support forums
Satellite Systems - What to Buy - What to install
The C-band Tin-Dish challenge
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<blockquote data-quote="Channel Hopper" data-source="post: 996315" data-attributes="member: 175144"><p>If you are at the threshold for reception the footprint is probably the least variable part of the link budget at the distances involved.</p><p></p><p>The LNB characteristics (not just the noise figures/sensitivity) but the frequency response throughout the band, which will also differ on each - of the four - polarities. The mechanical characteristics at the feedhorn end and how the matching of the bore relates to the focal point of the dish reflector at all points.</p><p> Electrical interference and incoming wireless at the IF frequencies will play a part.</p><p></p><p>You will also have different sidelobes as well as the ground and background noise from buildings nearby, which will be affected by reflections from any number of offbeam objects, outhouses trees.</p><p></p><p>Differences in temperature, humidity and particulates in the atmosphere at all altitudes........</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 996315, member: 175144"] If you are at the threshold for reception the footprint is probably the least variable part of the link budget at the distances involved. The LNB characteristics (not just the noise figures/sensitivity) but the frequency response throughout the band, which will also differ on each - of the four - polarities. The mechanical characteristics at the feedhorn end and how the matching of the bore relates to the focal point of the dish reflector at all points. Electrical interference and incoming wireless at the IF frequencies will play a part. You will also have different sidelobes as well as the ground and background noise from buildings nearby, which will be affected by reflections from any number of offbeam objects, outhouses trees. Differences in temperature, humidity and particulates in the atmosphere at all altitudes........ [/QUOTE]
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Satellite TV receivers & systems support forums
Satellite Systems - What to Buy - What to install
The C-band Tin-Dish challenge
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