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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Optimizing signal
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<blockquote data-quote="Channel Hopper" data-source="post: 5810" data-attributes="member: 175144"><p>Dear 2Old</p><p></p><p>You forgot </p><p></p><p>4) True polarmounts - some setups - particularly on offset dishes - do not allow full tracking of the geostationary arc down to the horizon. A lot of fiddling and some filing may be required to ensure you get the lower elevation satellites (which quite often are also weaker)</p><p></p><p>5) The offset angle - or skew - of the incoming signal. Nowadays it is highly likely the system used will have a Universal LNB with no manual polarisation adjustment - save for the final lockdown into the clamp at the front of the dish. Satellites near the centre of the arc (exception is Telecom 5West) will run 0 and 90 degree polarisation quite well but others away from the highest point will need to have the LNBtwisted slightly to improve one or the other polarisation</p><p></p><p>And of course there are the satellites that move a bit away from the geostationary arc, Europestar B, Intelsat 31.5W, but thats another story.</p><p></p><p>Signal quality is simply the maximum signal when compared to the background noise of the rest of the system set up. Minimising noise wherever it comes in to your equipment by any means will help the situation, a larger dish correctly set up has by far the best improvement in one step, replacing of anything else (with the exception of maybe wrongly fitted line amps or cable connectors) will not have as dramatic impact. You could end up replacing almost everything if you find a channel off one satellite is not behaving.</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 5810, member: 175144"] Dear 2Old You forgot 4) True polarmounts - some setups - particularly on offset dishes - do not allow full tracking of the geostationary arc down to the horizon. A lot of fiddling and some filing may be required to ensure you get the lower elevation satellites (which quite often are also weaker) 5) The offset angle - or skew - of the incoming signal. Nowadays it is highly likely the system used will have a Universal LNB with no manual polarisation adjustment - save for the final lockdown into the clamp at the front of the dish. Satellites near the centre of the arc (exception is Telecom 5West) will run 0 and 90 degree polarisation quite well but others away from the highest point will need to have the LNBtwisted slightly to improve one or the other polarisation And of course there are the satellites that move a bit away from the geostationary arc, Europestar B, Intelsat 31.5W, but thats another story. Signal quality is simply the maximum signal when compared to the background noise of the rest of the system set up. Minimising noise wherever it comes in to your equipment by any means will help the situation, a larger dish correctly set up has by far the best improvement in one step, replacing of anything else (with the exception of maybe wrongly fitted line amps or cable connectors) will not have as dramatic impact. You could end up replacing almost everything if you find a channel off one satellite is not behaving. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Optimizing signal
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