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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
rain, fringe & prime focus
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<blockquote data-quote="Likvid" data-source="post: 402903" data-attributes="member: 176379"><p>Nothing beats a spun aluminium dish in performance, plastic dishes like Andrew has a thin coat of gelcoat i beleive that the signal has to pass thru until it reach the zink/alu coat underneath.</p><p></p><p>Plastic dishes do get old and it's a myth they last forever, i have seen Channel Master 1.8m dishes and some Swedish made plastic dishes that cracked from the inside of the thin plastic coating.</p><p></p><p>What happens after that?</p><p></p><p>Well, with environmental effects wet and rainy weather eats thru the plastic crack from the inside and you get bubbles in the plastic which looks like huge bumps.</p><p></p><p>I am not kidding.</p><p></p><p>Problem with metal dishes?</p><p></p><p>There are some problems with metal dishes, badly designed dishes can warp after some time and exposure to strong climate changes in temperature.</p><p></p><p>Shipping metal dishes safely is another problem, but nothing to worry about if you buy from Precision or DH antennas as they will ship them in a wooden crate.</p><p></p><p>Cheap dishes like Gibertini and such are sent in a cardboard box, if someone jumps on it during transit the dish will be damaged.</p><p></p><p>No there is no secret the Prodelin 3.8m is better than the Prodelin 4.2m prime focus.</p><p></p><p>But in the end for dishes larger than 1.8m prime focus is the king when it comes to flexibility, there is a large market of feeds to choose from and prime focus dishes looks nicer and easier to work with as you don't need to know the offset angle and such.</p></blockquote><p></p>
[QUOTE="Likvid, post: 402903, member: 176379"] Nothing beats a spun aluminium dish in performance, plastic dishes like Andrew has a thin coat of gelcoat i beleive that the signal has to pass thru until it reach the zink/alu coat underneath. Plastic dishes do get old and it's a myth they last forever, i have seen Channel Master 1.8m dishes and some Swedish made plastic dishes that cracked from the inside of the thin plastic coating. What happens after that? Well, with environmental effects wet and rainy weather eats thru the plastic crack from the inside and you get bubbles in the plastic which looks like huge bumps. I am not kidding. Problem with metal dishes? There are some problems with metal dishes, badly designed dishes can warp after some time and exposure to strong climate changes in temperature. Shipping metal dishes safely is another problem, but nothing to worry about if you buy from Precision or DH antennas as they will ship them in a wooden crate. Cheap dishes like Gibertini and such are sent in a cardboard box, if someone jumps on it during transit the dish will be damaged. No there is no secret the Prodelin 3.8m is better than the Prodelin 4.2m prime focus. But in the end for dishes larger than 1.8m prime focus is the king when it comes to flexibility, there is a large market of feeds to choose from and prime focus dishes looks nicer and easier to work with as you don't need to know the offset angle and such. [/QUOTE]
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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
rain, fringe & prime focus
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