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DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
Calculation of the focal length of an offset satellite dish antenna, Revisited
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<blockquote data-quote="a33" data-source="post: 1124783" data-attributes="member: 332642"><p>Answer to that can be found in the John Legon article:</p><p>d2 is called BF by him,</p><p>d1 is called AF by him.</p><p></p><p>Finding angle theta:</p><p>consider triangle Focus - TopOfDish - BottomOfDish,</p><p>you already know d1 and d2,</p><p>other side of the triangle = height of the dish.</p><p>Now apply the cosine rule, to find angle theta.</p><p></p><p><em>Edit: By the way, there are of course other approaches possible, for the calculation of theta. But this one is rather easy to follow, I guess, so I chose to mention this one.</em></p><p></p><p></p><p>Is there a little project coming?</p><p>Please share that with us (but maybe in a new/separate thread, to keep this thread about equations).</p><p>We're always interested...</p><p></p><p>greetz,</p><p>A33</p></blockquote><p></p>
[QUOTE="a33, post: 1124783, member: 332642"] Answer to that can be found in the John Legon article: d2 is called BF by him, d1 is called AF by him. Finding angle theta: consider triangle Focus - TopOfDish - BottomOfDish, you already know d1 and d2, other side of the triangle = height of the dish. Now apply the cosine rule, to find angle theta. [I]Edit: By the way, there are of course other approaches possible, for the calculation of theta. But this one is rather easy to follow, I guess, so I chose to mention this one.[/I] Is there a little project coming? Please share that with us (but maybe in a new/separate thread, to keep this thread about equations). We're always interested... greetz, A33 [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
Calculation of the focal length of an offset satellite dish antenna, Revisited
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