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C Band Right and Left
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<blockquote data-quote="Spiff" data-source="post: 1013480" data-attributes="member: 404998"><p>Thank you S Band for your reply.</p><p></p><p>As my C band feed horn had vertical and horizontal antenna, rotating the dielectric slab with a motor was pointless then : )</p><p></p><p>We live and learn.</p><p></p><p>There is a bar inside both KU and C band LNBS that is thicker than the aerial, and extends right across the horn between the two aerial rods.</p><p></p><p>Can you tell me what its purpose is, some kind of director or reflector perhaps ?</p><p></p><p>I read that there are C band horns made just for circular polarization, do they convert from circular to vertical or horizontal ?</p><p></p><p>Or do they use some other type of aerial rod to directly receive right or left hand polarization signals ?</p><p></p><p>There is one called a corilatorChaparral Corotor II Plus WideBand C/KU International Feed horn, it is dual band.</p><p></p><p>This device uses servo motors which unless a separate means to drive them is constructed will require a special receiver I think ?</p><p></p><p><a href="http://www.ebay.co.uk/itm/252588943476?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT" target="_blank">Chaparral Corotor II + c/ku-band Wideband International Feedhorn Big Dish Feed | eBay</a></p><p></p><p> On your edit are you refereeing to receiving a linier e.g. vertical or horizontal signal not a circular one ?</p><p></p><p><u><em>Edit: For linear polarisations the probe needs to be in line with or at 90 degrees to the plate</em></u></p><p></p><p>In which case my motor could be used to move the plate to such a position as to revert the device to receive vertical or horizontal signals which would make it useful : )</p><p></p><p>Lovely day here.</p><p></p><p>God Bless Spiff</p></blockquote><p></p>
[QUOTE="Spiff, post: 1013480, member: 404998"] Thank you S Band for your reply. As my C band feed horn had vertical and horizontal antenna, rotating the dielectric slab with a motor was pointless then : ) We live and learn. There is a bar inside both KU and C band LNBS that is thicker than the aerial, and extends right across the horn between the two aerial rods. Can you tell me what its purpose is, some kind of director or reflector perhaps ? I read that there are C band horns made just for circular polarization, do they convert from circular to vertical or horizontal ? Or do they use some other type of aerial rod to directly receive right or left hand polarization signals ? There is one called a corilatorChaparral Corotor II Plus WideBand C/KU International Feed horn, it is dual band. This device uses servo motors which unless a separate means to drive them is constructed will require a special receiver I think ? [URL="http://www.ebay.co.uk/itm/252588943476?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT"]Chaparral Corotor II + c/ku-band Wideband International Feedhorn Big Dish Feed | eBay[/URL] On your edit are you refereeing to receiving a linier e.g. vertical or horizontal signal not a circular one ? [U][I]Edit: For linear polarisations the probe needs to be in line with or at 90 degrees to the plate[/I][/U] In which case my motor could be used to move the plate to such a position as to revert the device to receive vertical or horizontal signals which would make it useful : ) Lovely day here. God Bless Spiff [/QUOTE]
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