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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Satellite Meters and Installation Equipment
How to calculate depth of satellite dish?
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<blockquote data-quote="vma" data-source="post: 1075898" data-attributes="member: 256592"><p>The extention you did is for sure completely out of curvature!</p><p></p><p>It would be a miracle if you would be able to attach aluminium foil to the upper part of your 110cm dish and make it bigger, lets say 130cm. The surface would have to have the exact curvature, which is parabolic. What you modelled by hand is probably just a tangent continuation, which is wrong.</p><p></p><p>In fact, if it is wrong in the wrong direction, you would actually get LESS signal than without the additional aluminium foil!</p><p></p><p>Also, for Ku band, I find it hard to believe that within Europe there is any signal you would get with 130cm, that was not already receivable with 110cm.</p><p></p><p>Look at my profile picture: it shows a "dish" made of aluminium foild and a feed made with legos. Start small with a 30x30cm foil and hold the LNB in front of it. Then start increasing the area. You will see that it gets increasingly more difficult to do a propper dish!</p><p></p><p>Regards,</p><p>Vitor</p></blockquote><p></p>
[QUOTE="vma, post: 1075898, member: 256592"] The extention you did is for sure completely out of curvature! It would be a miracle if you would be able to attach aluminium foil to the upper part of your 110cm dish and make it bigger, lets say 130cm. The surface would have to have the exact curvature, which is parabolic. What you modelled by hand is probably just a tangent continuation, which is wrong. In fact, if it is wrong in the wrong direction, you would actually get LESS signal than without the additional aluminium foil! Also, for Ku band, I find it hard to believe that within Europe there is any signal you would get with 130cm, that was not already receivable with 110cm. Look at my profile picture: it shows a "dish" made of aluminium foild and a feed made with legos. Start small with a 30x30cm foil and hold the LNB in front of it. Then start increasing the area. You will see that it gets increasingly more difficult to do a propper dish! Regards, Vitor [/QUOTE]
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DISH SETUP: Single sat, Multi-Sat & Motorised
Satellite Meters and Installation Equipment
How to calculate depth of satellite dish?
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