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Satellite TV receivers & systems support forums
Satellite Systems - What to Buy - What to install
The C-band Tin-Dish challenge
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<blockquote data-quote="s-band" data-source="post: 996208" data-attributes="member: 407744"><p>I tried 38E and got 12 transponders but not the 2 above (EBSPro vertical scan attached). I just managed to lock 4184V at about 4dB but got nothing from 4114V. I was using a Norsat 3220 but tried a Tit to double check, it was about 1dB down. Looking at the posts on <a href="http://www.satellitescommunity.de/thread.php?threadid=32&sid=b1e59f3477268bf6d8f5fb5e03ceabe6&page=6#15458" target="_blank">Satellites Community</a> my figures are all over the place compared to others. Some better, some worse (taking dish sizes out of the equation). I could see the horizontal transponders (4005 & 4060)on the analyser but there was no chance of locking. </p><p></p><p>I am suspicious that I may not have the correct focus. The instructions say 912mm, I was getting best signal at around 885mm. I can't get the LNB further away than 895mm and at that point it picks up lots of ground noise from the feed side lobes. If I get a chance, I'll move the feed arms to the wrong side (inside face) of the scalar to see if the focus is really closer to 912mm. My gut feel is that there are a couple more dB to be had by optimising focus and stringing the dish.</p><p></p><p>[ATTACH]100989[/ATTACH]</p></blockquote><p></p>
[QUOTE="s-band, post: 996208, member: 407744"] I tried 38E and got 12 transponders but not the 2 above (EBSPro vertical scan attached). I just managed to lock 4184V at about 4dB but got nothing from 4114V. I was using a Norsat 3220 but tried a Tit to double check, it was about 1dB down. Looking at the posts on [URL='http://www.satellitescommunity.de/thread.php?threadid=32&sid=b1e59f3477268bf6d8f5fb5e03ceabe6&page=6#15458']Satellites Community[/URL] my figures are all over the place compared to others. Some better, some worse (taking dish sizes out of the equation). I could see the horizontal transponders (4005 & 4060)on the analyser but there was no chance of locking. I am suspicious that I may not have the correct focus. The instructions say 912mm, I was getting best signal at around 885mm. I can't get the LNB further away than 895mm and at that point it picks up lots of ground noise from the feed side lobes. If I get a chance, I'll move the feed arms to the wrong side (inside face) of the scalar to see if the focus is really closer to 912mm. My gut feel is that there are a couple more dB to be had by optimising focus and stringing the dish. [ATTACH]100989[/ATTACH] [/QUOTE]
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Satellite Systems - What to Buy - What to install
The C-band Tin-Dish challenge
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