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Dish size

Discussion in 'Satellite TV, Sky TV & FreeSat' started by deanym, Apr 28, 2005.

  1. deanym

    deanym
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    Would a 90cm dish give a better picture thru Sky than a minidish? Assuming both are set up correctly.
     
  2. Nick_UK

    Nick_UK
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    It's a digital system. If the signal is good enough to give a good quality signal (low bit error rate) then no increase in picture quality will result in using a bigger dish. In some cases a bigger dish can be a disadvantage.... bigger dishes are easier to knock off alignment.

    A good comparison is a telescope.... try looking at a star with a small telescope - the star will be quite easy to find, and moving the telescope will not completely lose the image. Now look at the same star through a more powerful telescope - you will have trouble finding the star, and moving the telescope a small amount will lose the star.
     
  3. deanym

    deanym
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    Above seems to make sense (well other than the cantona-esque tosh about telescopes :rotfl: ) but just about all boxes that I've looked at - friends and familiy etc, are not on full signal strength or quality, therefore would a bigger dish allow these readings to become full and result in a higher quality picture?
     
  4. Nick_UK

    Nick_UK
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    If you are not going to read the replies properly, and only want to ridicule, then I doubt that you will get many more.
     
  5. deanym

    deanym
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    I'll rephrase.

    Would a bigger dish allow the quality and signal stregth to increase to 100%?
     
  6. GGTVBD

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    Children - stop bickering! :rotfl:

    deanym,

    I thought Nick had explained things pretty well actually. He's clearly a knowledgeable guy and is always (or so I thought!!) helpful.

    My answer to your question - and don't take it personally - stop being so anal about signal strength. If you don't get any loss of signal you won't gain anything by using a 90cm dish.

    A. Dork
     
  7. deanym

    deanym
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    Well thats the crux of the matter, the strength and quality are not at full stregth, and having an xde which are famed for being weak on sky sources, I was wondering of there is any way of improving this.

    Its certainly not anal to want to get the best out of a system.

    I'm moving house soon and I have in my possession a 90cm dish, lnb etc etc, so I don't have to rely on sky for installation.
     
  8. GGTVBD

    GGTVBD
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    True......

    But you'll gain nothing by increasing the size of the dish.

    It doesn't matter what the levels are in the services menu - 50%, 75%, 100% - there will be no difference whatsoever in the picture quality.

    OK?

    A. Dork
     
  9. deanym

    deanym
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    What about sound quality?

    Will there be more break up in bad weather with a larger dish?
     
  10. GGTVBD

    GGTVBD
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    Nope.

    A. Dork :suicide: :suicide: :suicide: :suicide:
     
  11. deanym

    deanym
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    Sorry for the rudimentary questions

    Bad weather - which will be more robust - mindish, or larger dish?

    Any advantages at all with a larger dish?
     
  12. Bluevanman

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    None at all, unless you are moving to the far North of Scotland or the very Southwest of Cornwall. As a bit of an aside, most local authorities require you to have planning permission for a dish over 80cms.
     
  13. deanym

    deanym
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    Planning permission - crikey.

    thanks for the info. :)
     

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