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Dual T90 setup
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<blockquote data-quote="ChrizK" data-source="post: 757011" data-attributes="member: 370569"><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">Hey guys, thanks for the kind comments. Much appreciated.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">RimaNTSS – When the tree rots I will get a nice tan working outside in the sunshine cabling another setup :-)</span></span></span></p><p></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">Huevos – During planning I went through the theoretical exercise of comparing the strength of the beams with the antenna gain at various LNB offsets (from center). Based on the T90 gain graph it was an objective to have weak beams within +/- 10 degrees from center.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">For the East dish I wanted 26E in the center which is quite weak (especially the FSS beam). That let me keep two other birds with a couple of weak beams (36E and 16E) in the range with the most gain.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">For the West dish I wanted to have 4.2W in the center since Amos 3 is a little weak as well. When receiving 4W on the same LNB as the stronger 5W, I thought it would be a good to have the center a little closer to 4W than 5W. That let me secure reception of 4.8E's Europe FSS beam too.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">I have attached a few of the EIRP slides I used during planning and the T90 gain graph I used (perhaps the one made by RimaNTSS is better) as well as the spreadsheet with the “grand plan”.</span></span></span></p><p><span style="font-family: 'Calibri'"></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">The tenth LNB is at approx 27W and you are right - I use it just to hang the 30W LNB. (I did some testing and for me Intelsat at 27.5W was too weak for reception at that offset).</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p></blockquote><p></p>
[QUOTE="ChrizK, post: 757011, member: 370569"] [FONT=Calibri][SIZE=3][COLOR=#000000]Hey guys, thanks for the kind comments. Much appreciated. [/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000]RimaNTSS – When the tree rots I will get a nice tan working outside in the sunshine cabling another setup :-)[/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000]Huevos – During planning I went through the theoretical exercise of comparing the strength of the beams with the antenna gain at various LNB offsets (from center). Based on the T90 gain graph it was an objective to have weak beams within +/- 10 degrees from center.[/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000] For the East dish I wanted 26E in the center which is quite weak (especially the FSS beam). That let me keep two other birds with a couple of weak beams (36E and 16E) in the range with the most gain.[/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000] For the West dish I wanted to have 4.2W in the center since Amos 3 is a little weak as well. When receiving 4W on the same LNB as the stronger 5W, I thought it would be a good to have the center a little closer to 4W than 5W. That let me secure reception of 4.8E's Europe FSS beam too.[/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000] I have attached a few of the EIRP slides I used during planning and the T90 gain graph I used (perhaps the one made by RimaNTSS is better) as well as the spreadsheet with the “grand plan”.[/COLOR][/SIZE][/FONT] [FONT=Calibri] [SIZE=3][COLOR=#000000]The tenth LNB is at approx 27W and you are right - I use it just to hang the 30W LNB. (I did some testing and for me Intelsat at 27.5W was too weak for reception at that offset). [/COLOR][/SIZE][/FONT] [/QUOTE]
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