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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: 1151716" data-attributes="member: 332642"><p>Thanks for the compliment for the .pdf.</p><p>My spreadsheet isn't made public (yet), I'm afraid. The goal is to add several more calculation methods (also for multifeed dishes, e.g.), sometime.</p><p></p><p>However, here are the results of your inputs. In line to what you calculated in the meantime, yourself. <em>(But: see my edit addition below this post!)</em></p><p></p><p>When you mean to use it as a receive-only satellite dish, I would normally aim the LNB <em>at the deepest point</em>!</p><p>The opening angle of the dish seems a bit smaller, than with normal Ku-dishes, though. That might mean that aiming a bit lower might be worth testing, when you would be using a normal Ku-LNBf for offset dishes!</p><p></p><p>[ATTACH=full]151774[/ATTACH]</p><p></p><p>I hope you can work with this?</p><p></p><p>If it must be tested if the dish is not warped, quite a few more measurements must be collected. I have derived the needed equations somewhere in my notes, but I haven't put those equations in my spreadsheet calculator(s) yet.</p><p></p><p></p><p>Greetz,</p><p>A33.</p><p></p><p></p><p><em>Edit: I just noticed your 1190, noted as "focal length"! I came to 1192 as "dish width", fitting to a flat-faced dish with the height of 1260...! ???</em></p></blockquote><p></p>
[QUOTE="a33, post: 1151716, member: 332642"] Thanks for the compliment for the .pdf. My spreadsheet isn't made public (yet), I'm afraid. The goal is to add several more calculation methods (also for multifeed dishes, e.g.), sometime. However, here are the results of your inputs. In line to what you calculated in the meantime, yourself. [I](But: see my edit addition below this post!)[/I] When you mean to use it as a receive-only satellite dish, I would normally aim the LNB [I]at the deepest point[/I]! The opening angle of the dish seems a bit smaller, than with normal Ku-dishes, though. That might mean that aiming a bit lower might be worth testing, when you would be using a normal Ku-LNBf for offset dishes! [ATTACH type="full" alt="Scottgs dish specs 10sept2023 Schermafdruk .png"]151774[/ATTACH] I hope you can work with this? If it must be tested if the dish is not warped, quite a few more measurements must be collected. I have derived the needed equations somewhere in my notes, but I haven't put those equations in my spreadsheet calculator(s) yet. Greetz, A33. [I]Edit: I just noticed your 1190, noted as "focal length"! I came to 1192 as "dish width", fitting to a flat-faced dish with the height of 1260...! ???[/I] [/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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