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DISH SETUP: Single sat, Multi-Sat & Motorised
Modified my CM LNB holder for KU and CBAND
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<blockquote data-quote="nelson_b" data-source="post: 1132721" data-attributes="member: 296628"><p>O.k for C band ... but not so good for k/u here in the u.k.</p><p></p><p>I bought a C - K/U combination l.n.b many years ago to fit on my 1.8 Channel master offset ... and using a cone scalar on it ... C band performance was o.k. (although i consider 1.8 a minimum size for most C band transmissions here in the u/k )</p><p>The problems are with k/u ... the combination l.n.b,s are i think designed with prime focus dishes in mind .. the scalar rings are " flat" on the k/u part of the l.n.b [ATTACH]143733[/ATTACH] so is not ideal for an offset dish ...</p><p></p><p>Another reason for reduced k/u performance is the dielectric plate in the C band part of the l.n.b ... a lot of the C band satellites covering u/k and Europe have circular transponders - so need the plate ... this kills the K/u signals for all but the strongest ones ... for me the combined unit did not give any better k/u result on my 1.8 with a dielectric plate fitted than i would have got from a normal l.n.b on a a regular 1.0 meter dish</p><p></p><p>But i dont doubt that the combo l.n.b,s work well on k/u - on large prime focus dishes - when receiving linear c band.</p></blockquote><p></p>
[QUOTE="nelson_b, post: 1132721, member: 296628"] O.k for C band ... but not so good for k/u here in the u.k. I bought a C - K/U combination l.n.b many years ago to fit on my 1.8 Channel master offset ... and using a cone scalar on it ... C band performance was o.k. (although i consider 1.8 a minimum size for most C band transmissions here in the u/k ) The problems are with k/u ... the combination l.n.b,s are i think designed with prime focus dishes in mind .. the scalar rings are " flat" on the k/u part of the l.n.b [ATTACH alt="dmx ku.jpg"]143733[/ATTACH] so is not ideal for an offset dish ... Another reason for reduced k/u performance is the dielectric plate in the C band part of the l.n.b ... a lot of the C band satellites covering u/k and Europe have circular transponders - so need the plate ... this kills the K/u signals for all but the strongest ones ... for me the combined unit did not give any better k/u result on my 1.8 with a dielectric plate fitted than i would have got from a normal l.n.b on a a regular 1.0 meter dish But i dont doubt that the combo l.n.b,s work well on k/u - on large prime focus dishes - when receiving linear c band. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Modified my CM LNB holder for KU and CBAND
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