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Satellite TV receivers & systems support forums
Fringe Reception General
Inverto Black Ultra & 1.8m Prime Focus Dish?
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<blockquote data-quote="Vipersan" data-source="post: 801565" data-attributes="member: 325666"><p>As Pride says ...the electronics of the lnb are the same ..</p><p>What is different is the feed horn ..</p><p>In the case of an offset lnb ..this is usually integrated with the electronics ..whereas on a Prime focus this is usually removeable and adjustable ...consisting of a flat plate carrying concentric rings ..</p><p>Closer investigation of an offset feed shows it to be trumpet shaped ...basically a reducing cone.</p><p>The common point is behind the feed ..ie a tube feed ...which is the same for both types of lnb.</p><p>What was suggested is this be severed ..and a concentric ring feed grafted onto a black ultra ..which is known to be a high gain lnb ...but sadly isn't available as is ..for a prime focus dish.</p><p>I don't know why this is so ..other than to suggest that most people use offset dishes these days ...and thus a larger market exists..</p><p>Once again ..it tends to be that 'money talks'.</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 801565, member: 325666"] As Pride says ...the electronics of the lnb are the same .. What is different is the feed horn .. In the case of an offset lnb ..this is usually integrated with the electronics ..whereas on a Prime focus this is usually removeable and adjustable ...consisting of a flat plate carrying concentric rings .. Closer investigation of an offset feed shows it to be trumpet shaped ...basically a reducing cone. The common point is behind the feed ..ie a tube feed ...which is the same for both types of lnb. What was suggested is this be severed ..and a concentric ring feed grafted onto a black ultra ..which is known to be a high gain lnb ...but sadly isn't available as is ..for a prime focus dish. I don't know why this is so ..other than to suggest that most people use offset dishes these days ...and thus a larger market exists.. Once again ..it tends to be that 'money talks'. rgds VS [/QUOTE]
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Satellite TV receivers & systems support forums
Fringe Reception General
Inverto Black Ultra & 1.8m Prime Focus Dish?
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