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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Dish Setup Guides, Information threads and FAQs
Antenna's focal point - "le point G"
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<blockquote data-quote="a33" data-source="post: 953458" data-attributes="member: 332642"><p>Thanks again. I'll look into that program next week.</p><p></p><p>The multifeed dish I have in mind is a Visiosat Bisat I have lying aroud. I 'stole' some pictures of the internet: see attached.</p><p>[ATTACH]88284[/ATTACH] [ATTACH]88285[/ATTACH] [ATTACH]88286[/ATTACH] </p><p>I understand the horizontal plane of such a multifeed dish is more sferical than parabolical, to create multiple focal points (a focal line).</p><p>Isn't the water-method for purely parabolical dishes (both vertical and horizontal)?</p><p>I don't know the dust tape method; how does that go?</p><p></p><p>I would like to make this dish suitable for someone, not only to watch 13-19-23-28e, but also 9e and 5w, all on this one dish. I've seen on the internet that 5W is really do-able in this configuration. (Alas, 26e not possible between 23 and 28e.)</p><p>I would like to check the position of the central LNB (am curious how that can best be done with a multifeed dish, reading all the posts about ill-placed LNBs), and skew the whole dish (that must be DIY, no skewable bracket there). I guess skewing the whole dish would be best specially for 5W, to have as much sight of the dish as possible.</p><p>Then calculate the correct LNB-distances to see if improvements are possible (in the present holder the LNB's look in all directions (due to lack of space, I think, because the holders are rather thick).</p><p></p><p>Would be nice project for next spring or so.</p><p></p><p>greetz,</p><p>A33</p></blockquote><p></p>
[QUOTE="a33, post: 953458, member: 332642"] Thanks again. I'll look into that program next week. The multifeed dish I have in mind is a Visiosat Bisat I have lying aroud. I 'stole' some pictures of the internet: see attached. [ATTACH]88284[/ATTACH] [ATTACH]88285[/ATTACH] [ATTACH]88286[/ATTACH] I understand the horizontal plane of such a multifeed dish is more sferical than parabolical, to create multiple focal points (a focal line). Isn't the water-method for purely parabolical dishes (both vertical and horizontal)? I don't know the dust tape method; how does that go? I would like to make this dish suitable for someone, not only to watch 13-19-23-28e, but also 9e and 5w, all on this one dish. I've seen on the internet that 5W is really do-able in this configuration. (Alas, 26e not possible between 23 and 28e.) I would like to check the position of the central LNB (am curious how that can best be done with a multifeed dish, reading all the posts about ill-placed LNBs), and skew the whole dish (that must be DIY, no skewable bracket there). I guess skewing the whole dish would be best specially for 5W, to have as much sight of the dish as possible. Then calculate the correct LNB-distances to see if improvements are possible (in the present holder the LNB's look in all directions (due to lack of space, I think, because the holders are rather thick). Would be nice project for next spring or so. 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
Antenna's focal point - "le point G"
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