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Satellite TV receivers & systems support forums
Fringe Reception General
Using Prime Focus dish as Offset
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<blockquote data-quote="ralphmagno" data-source="post: 800437" data-attributes="member: 189146"><p><a href="http://upload.wikimedia.org/wikipedia/commons/f/f0/Parabolic_antenna_types2.svg" target="_blank"></a></p><p><a href="http://upload.wikimedia.org/wikipedia/commons/f/f0/Parabolic_antenna_types2.svg" target="_blank"></a>here is what i was talking about.</p><p>prime focus is like a cassegrain.</p><p></p><p>the sub reflector reflects the signal back to the center of the dish gain is higher than a prime.</p><p>offset is cut different and is used in most applications.</p><p></p><p>the center of the dish of a prime is the null spot and that is what they use for most up links.</p><p>ralph</p></blockquote><p></p>
[QUOTE="ralphmagno, post: 800437, member: 189146"] [URL="http://upload.wikimedia.org/wikipedia/commons/f/f0/Parabolic_antenna_types2.svg"] [/URL]here is what i was talking about. prime focus is like a cassegrain. the sub reflector reflects the signal back to the center of the dish gain is higher than a prime. offset is cut different and is used in most applications. the center of the dish of a prime is the null spot and that is what they use for most up links. ralph [/QUOTE]
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Satellite TV receivers & systems support forums
Fringe Reception General
Using Prime Focus dish as Offset
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