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  1. #1
    Junior Member Master
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    Exclamation What is db rating and is better when its lower or higher?


    What is db rating and is better when its lower or higher?

    is 0.3db better or 0.9db better
    lets just say for the satellite HOTBIRD
    which is good...
    lower db or higher db

    can someone tell the difference

  2. #2
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    Default lnb

    db rate the lower the better
    go for a 0.3db

  3. #3
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    anybody can put a sticker on the label saying .1 db.

    go buy a reputable lnb brand like inverto or invacom.
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  4. #4
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    Its also good to experiment,
    If not too expensive, buy both and give us your feedback
    and also the manufacturer, since they'll both work, but one
    will have better qualities.

  5. #5
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    On the same subject which is good C-Band LNB. Some of the channels which are weak is breaking...

  6. #6
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    I Have Noticed that there is a Ku band LNB in INDIA provided by DIshtv that is .5DB it gives me 32 % signal from Hotbird.

    When I replace Dishtv LNB with other one which is .2 or .3 DB then I get around 50 % signal.

    But not all 0.2 or 0.3 LNB perform same.

  7. #7
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    Quote Originally Posted by tmsani View Post
    On the same subject which is good C-Band LNB. Some of the channels which are weak is breaking...
    get a bigger dish, no lnb can substitute that.
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  8. #8
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    Quote Originally Posted by boknoy_ph View Post
    get a bigger dish, no lnb can substitute that.
    I know bigger dish will get me those channels but i have heared of LNB's which can increase signal by 5% is that trure? I am missing few channels by just...

  9. #9
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    then get a higher kelvin rating.

    also it depends if you are getting a lot of earth noise around your area.
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  10. #10
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    I noticed this difference on my 12 feet Dish antenna

  11. #11
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    Quote Originally Posted by boknoy_ph View Post
    then get a higher kelvin rating.

    also it depends if you are getting a lot of earth noise around your area.
    How do i know if i am getting lot of earth noise? Which is considered good C-Band LNB with high kelvin rating?

  12. #12
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    Quote Originally Posted by boknoy_ph View Post
    get a bigger dish, no lnb can substitute that.
    100 percent correct but sometimes not possible ie in countries that allow max dish size .
    The best way to improve performance of your lnb especially during sunlight hours is to water cool it. The method is so successful that the watercooling method is now being used to improve the performance of chips in computers instead of a fan.

  13. #13
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    Quote Originally Posted by C-BAND View Post
    The best way to improve performance of your lnb especially during sunlight hours is to water cool it. The method is so successful that the watercooling method is now being used to improve the performance of chips in computers instead of a fan.
    Do tell us more...

    Water cooled chips on a IC board sounds wonderful. Do they come with a top-up tank.

    As for cooling down an LNB for a better result, the jury's still out on that one, but I've heard tell a packet of frozen Peas does wonders.
    regards from OZ bassett

  14. #14
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    c-band,

    i think when we talk of size limitations, we refer to the allowable size before they impose penalties. you can put a big dish behind your house where nobody sees it.

    @bassett,

    water cooling on ic chips is done with heatsinks attached to the water cooling mech. you can even find chips bathed in cooking oil.
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  15. #15
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    Quote Originally Posted by tmsani View Post
    How do i know if i am getting lot of earth noise? Which is considered good C-Band LNB with high kelvin rating?
    The kelvin rating refers also to places that attain very high temperatures during the day (sun) and in such areas we use c band lnbs with higher k ratings.
    they can stand a temperature higher than those with low k ratings.
    This however does not apply to wi-max interference on c band frequencies.

 

 

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