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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
ouistion about prime focus dish serfice and refleting signal
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<blockquote data-quote="Vipersan" data-source="post: 930870" data-attributes="member: 325666"><p>Probably not the best and most accurate dish you have ..but your experiment although a bit vague sort of makes sense if you think about it in terms of surface area of the dish divided in and out of the circles ..</p><p>If the dish are within the inner red circle is the most accurate and therefore focussing a higher concentrate of signal then the three pieces of metal are reducing the focus potential by a greater proportion of surface area ..than if they are placed outside the red circle ignoring the area inside the circle..</p><p>Your test doesn't really tell us anything other than the dish is either badly made and inaccuracies increase outside the red circle ..</p><p>OR </p><p>That the dish is incorrectly illuminated by the feed ...</p><p>Possibly adjusting the concentric ring lnb feed disc to better match the dish ..and thus improve illumination will yield results ..</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 930870, member: 325666"] Probably not the best and most accurate dish you have ..but your experiment although a bit vague sort of makes sense if you think about it in terms of surface area of the dish divided in and out of the circles .. If the dish are within the inner red circle is the most accurate and therefore focussing a higher concentrate of signal then the three pieces of metal are reducing the focus potential by a greater proportion of surface area ..than if they are placed outside the red circle ignoring the area inside the circle.. Your test doesn't really tell us anything other than the dish is either badly made and inaccuracies increase outside the red circle .. OR That the dish is incorrectly illuminated by the feed ... Possibly adjusting the concentric ring lnb feed disc to better match the dish ..and thus improve illumination will yield results .. rgds VS [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
ouistion about prime focus dish serfice and refleting signal
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