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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
C-Band Reception, UK and Europe
Disaster!!
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<blockquote data-quote="PaulR" data-source="post: 753296" data-attributes="member: 176256"><p>IIRC correctly the Cassegrain uses a hyperbolic second reflector and the Gregorian a parabolic.</p><p></p><p>Wouldn't the reflector shadow the main dish and reduce signal though? Or are you planning on using a reflector that smaller than the LNB? You'd have to put the sub reflector closer to the dish than the LNB position simply so that the sub reflector can do some focusing of its own.</p></blockquote><p></p>
[QUOTE="PaulR, post: 753296, member: 176256"] IIRC correctly the Cassegrain uses a hyperbolic second reflector and the Gregorian a parabolic. Wouldn't the reflector shadow the main dish and reduce signal though? Or are you planning on using a reflector that smaller than the LNB? You'd have to put the sub reflector closer to the dish than the LNB position simply so that the sub reflector can do some focusing of its own. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
C-Band Reception, UK and Europe
Disaster!!
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