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Satellite Systems - What to Buy - What to install
monoblock LNB.
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<blockquote data-quote="a33" data-source="post: 1002201" data-attributes="member: 332642"><p>Your case being, if I understand correctly:</p><p>a. the aiming point/aiming angle of an LNB is quintessential for good reception</p><p>b. in a monoblock the angles of the two feedhorns are therefore not parallel, but at an angle</p><p>c. that therefore (due to the used angles) monoblocks are only usable at the specified dish size, mostly 80cm.</p><p></p><p>As I wrote earlier (referring to point a.), aiming angle isn't that important. Not an LNB is the primary aiming object, as you seem to suggest, but the dish itself is. The LNB 'only' has to be in the right spot (the focal point). Ideally the LNB is aimed at the G-spot, but if it is not, reception is usually still very good. That is probably why very many LNBs aren't aimed at the G-spot, without problems...</p><p></p><p>With multifeed (off-focus) reception, aiming point is equally secondary to exact location of the LNB.</p><p>Best aiming point would be the "horizontal G-spot", as I called it in a topic in the section <span style="font-size: 15px">'Dish Setup Guides, Information threads and FAQs'. </span></p><p>However, even with separate LNBs on a multifeed bracket, people use all kinds of aiming points. So it isn't really critical.</p><p></p><p>By the way: you seem to use the term 'focal point' in quite a different way as I (and [USER=319227]@davemurgtroyd[/USER] ) do. The focal point is 'the right spot' I mentioned above. A normal paraboloid dish just has one focal point; a multifeed dish can have a 'focal line'.</p><p>The aiming point for multifeed LNBs should be the 'horizontal G-spot'; so that is not called the focal point.</p><p></p><p>ad b.: I don't think that is really the case, I have never noticed it. Also the drawing of [USER=227656]@Tururu[/USER] shows parallel feedhorns, it seems. Have you measured the angle in various monoblocks?</p><p></p><p>ad c.: I still don't share that conclusion.</p><p></p><p>greetz,</p><p>A33</p><p></p><p></p><p></p><p></p><p>.</p></blockquote><p></p>
[QUOTE="a33, post: 1002201, member: 332642"] Your case being, if I understand correctly: a. the aiming point/aiming angle of an LNB is quintessential for good reception b. in a monoblock the angles of the two feedhorns are therefore not parallel, but at an angle c. that therefore (due to the used angles) monoblocks are only usable at the specified dish size, mostly 80cm. As I wrote earlier (referring to point a.), aiming angle isn't that important. Not an LNB is the primary aiming object, as you seem to suggest, but the dish itself is. The LNB 'only' has to be in the right spot (the focal point). Ideally the LNB is aimed at the G-spot, but if it is not, reception is usually still very good. That is probably why very many LNBs aren't aimed at the G-spot, without problems... With multifeed (off-focus) reception, aiming point is equally secondary to exact location of the LNB. Best aiming point would be the "horizontal G-spot", as I called it in a topic in the section [SIZE=4]'Dish Setup Guides, Information threads and FAQs'. [/SIZE] However, even with separate LNBs on a multifeed bracket, people use all kinds of aiming points. So it isn't really critical. By the way: you seem to use the term 'focal point' in quite a different way as I (and [USER=319227]@davemurgtroyd[/USER] ) do. The focal point is 'the right spot' I mentioned above. A normal paraboloid dish just has one focal point; a multifeed dish can have a 'focal line'. The aiming point for multifeed LNBs should be the 'horizontal G-spot'; so that is not called the focal point. ad b.: I don't think that is really the case, I have never noticed it. Also the drawing of [USER=227656]@Tururu[/USER] shows parallel feedhorns, it seems. Have you measured the angle in various monoblocks? ad c.: I still don't share that conclusion. greetz, A33 . [/QUOTE]
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