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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
SMW LNB and OMT
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<blockquote data-quote="Old Satellite" data-source="post: 61962" data-attributes="member: 175277"><p>The problem is that the normal Sky box is expecting to see a normal universal lnb and control the polarity of the vertical and horizontal signals itself.- and change frequency bands.</p><p></p><p>With an orthmode you normally would have one vertical and one horizontal LNB and the receiver would select the correct lnb -actually a receiver with a 0/12 volt switch for example and then in the menu you would select the correct vertical or horizontal LNB. </p><p></p><p>Additionally then you will also have a problem due to the normal othermode lnb itself which is normally then for a single band 10.95 - 11.7 for example.</p><p></p><p>THE ADVANTAGE OF THE ORTHMODE is however as you know is that as there is no poloriser there are no losses due to it either.</p><p></p><p>It is possible - but is it worth it ? normally the poloriser loss is not normally such an high cause factor. max advantage gain from its removal is typically from 0.1 to 1 db dependent on your current LNB and feed setup.</p><p></p><p>regards</p><p></p><p>Old Satellite</p></blockquote><p></p>
[QUOTE="Old Satellite, post: 61962, member: 175277"] The problem is that the normal Sky box is expecting to see a normal universal lnb and control the polarity of the vertical and horizontal signals itself.- and change frequency bands. With an orthmode you normally would have one vertical and one horizontal LNB and the receiver would select the correct lnb -actually a receiver with a 0/12 volt switch for example and then in the menu you would select the correct vertical or horizontal LNB. Additionally then you will also have a problem due to the normal othermode lnb itself which is normally then for a single band 10.95 - 11.7 for example. THE ADVANTAGE OF THE ORTHMODE is however as you know is that as there is no poloriser there are no losses due to it either. It is possible - but is it worth it ? normally the poloriser loss is not normally such an high cause factor. max advantage gain from its removal is typically from 0.1 to 1 db dependent on your current LNB and feed setup. regards Old Satellite [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
SMW LNB and OMT
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