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Sky Digital BSkyB, Freesat & Saorsat support forum
Freesat digital TV support forum
Freesat & FS-4200
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<blockquote data-quote="eclts" data-source="post: 602776" data-attributes="member: 320170"><p>My error was in elevation: and it is working well now. To summarise: </p><p></p><p>Information:</p><p></p><p>_www.dishpointer.com can be used to establish the relative position of a satellite</p><p></p><p>Elevation:</p><p></p><p>The Fortec dish (65 cm at least) has a built in offset of 24.62 degrees. This information is available online but was not, at least in my case, included in the documentation I received. ... for me the Astra 2 is at an elevation of 22.6 degrees so the vertical plane of the dish should point 2 degrees down (22.6 minus 24.62 degrees up).</p><p></p><p>Skew:</p><p></p><p>As indicated in this thread, the centre line of the LNB should point to about 4'oclock. There are markings on the LNB indicative of a scale of some sort but rather unhelpfully there are no figures. Although I have not optimised the skew, a good starting point appears to be when the slightly teardrop shaped mark - which is central - is at 12 o'clock. </p><p></p><p>Azimuthal position:</p><p></p><p>A good compass is quite sufficient. I found it easiest, when ground mounting, to establish magnetic South and cut a piece of cardboard to 32.7 degrees - the position of the satellite east of magnetic South for my location - to get a good idea of initial position.</p><p></p><p>What happens:</p><p></p><p>The free to air sat receiver (in the Maplin pack: FS-4200) indicates signal intensity and quality... see Menu, Installation, Antenna setup (from memory). When you are nowhere close - I was pointing well over the satellite although in the correct 'direction' azimuthally - the readings are 45% intensity and 4-5% quality. As you move the dish into the correct position: which you can do reasonably quickly - there is no need to 'set' it for a few seconds because the display updates in close to real time - the figures will jump... on a rainy night, indoors, through glass, once I had the correct elevation, with the skew set as indicated above (teardrop mark vertical) and knowing the azimuthal position to within a few degrees it took only a couple of minutes before I saw 90%+ intensity and 70%+ quality. I can see broadcasts from both Eurobird 1 and Astra 2 and both H and V channels which I take to mean that the polarisation is Horizontal/Vertical. </p><p></p><p>Finally... thanks to those who replied to my request for help. I hope this summary will help others in a similar position.</p></blockquote><p></p>
[QUOTE="eclts, post: 602776, member: 320170"] My error was in elevation: and it is working well now. To summarise: Information: _www.dishpointer.com can be used to establish the relative position of a satellite Elevation: The Fortec dish (65 cm at least) has a built in offset of 24.62 degrees. This information is available online but was not, at least in my case, included in the documentation I received. ... for me the Astra 2 is at an elevation of 22.6 degrees so the vertical plane of the dish should point 2 degrees down (22.6 minus 24.62 degrees up). Skew: As indicated in this thread, the centre line of the LNB should point to about 4'oclock. There are markings on the LNB indicative of a scale of some sort but rather unhelpfully there are no figures. Although I have not optimised the skew, a good starting point appears to be when the slightly teardrop shaped mark - which is central - is at 12 o'clock. Azimuthal position: A good compass is quite sufficient. I found it easiest, when ground mounting, to establish magnetic South and cut a piece of cardboard to 32.7 degrees - the position of the satellite east of magnetic South for my location - to get a good idea of initial position. What happens: The free to air sat receiver (in the Maplin pack: FS-4200) indicates signal intensity and quality... see Menu, Installation, Antenna setup (from memory). When you are nowhere close - I was pointing well over the satellite although in the correct 'direction' azimuthally - the readings are 45% intensity and 4-5% quality. As you move the dish into the correct position: which you can do reasonably quickly - there is no need to 'set' it for a few seconds because the display updates in close to real time - the figures will jump... on a rainy night, indoors, through glass, once I had the correct elevation, with the skew set as indicated above (teardrop mark vertical) and knowing the azimuthal position to within a few degrees it took only a couple of minutes before I saw 90%+ intensity and 70%+ quality. I can see broadcasts from both Eurobird 1 and Astra 2 and both H and V channels which I take to mean that the polarisation is Horizontal/Vertical. Finally... thanks to those who replied to my request for help. I hope this summary will help others in a similar position. [/QUOTE]
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