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<blockquote data-quote="a33" data-source="post: 1119280" data-attributes="member: 332642">That has a couple of issues:1. When you want to use normal (round) feedhorns, the effective dish surface for every satellite position would be less than a circle with the height of the dish(the plate)!2. You'd have to find the proper focal point of the parabolic surface. The calculation is do-able.From that, the &quot;illumination angle&quot; for the LNBs must be determined.When you are lucky, that angle is about the same as that of readily available LNBf's or of feedhorns for other LNBs.When you are not lucky, you'd have to find (or make) matching feedhorns. That could be difficult.3. Though the form of the extension plates suggests a toroidal multifeed-form (parabolic vertically, and circular horizontally), these extension plates are in fact paraboloid. So you won't get the advantage of a special multifeed dish, that the off-center satellites are received at about the same gain as the center satellite.So, how far apart satellites do you wish to receive? C-band, and/or Ku-band?And from where? (Where is &quot;ksa&quot;?)Can't you just as well use one or two normal (offset) dishes, and adapt them for multifeed reception?Greetz,A33</blockquote>

[QUOTE="a33, post: 1119280, member: 332642"] That has a couple of issues: 1. When you want to use normal (round) feedhorns, the effective dish surface for every satellite position would be [B]less[/B] than a circle with the height of the dish(the plate)! 2. You'd have to find the proper focal point of the parabolic surface. The calculation is do-able. From that, the "illumination angle" for the LNBs must be determined. When you are lucky, that angle is about the same as that of readily available LNBf's or of feedhorns for other LNBs. When you are not lucky, you'd have to find (or make) matching feedhorns. That could be difficult. 3. Though the form of the extension plates suggests a toroidal [B]multifeed[/B]-form (parabolic vertically, and circular horizontally), these extension plates are in fact paraboloid. So you won't get the advantage of a special multifeed dish, that the off-center satellites are received at about the same gain as the center satellite. So, how far apart satellites do you wish to receive? C-band, and/or Ku-band? And from where? (Where is "ksa"?) Can't you just as well use one or two normal (offset) dishes, and adapt [B]them[/B] for multifeed reception? Greetz, A33 [/QUOTE]

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