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  1. #1
    Junior Member Friend
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    Jan 2011
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    Default dreambox: Satfinder lock on both vertical and circular right polarity


    hi

    I changed the measat lnb from a normal ku to a extra gain prime focus lnb. After rotating the lnb, I managed to lock on with satfinder:

    11.0-12db
    65-75% SNR
    86% AGC
    Frequency 10982/11682
    Symbol rate 30000
    Polarity vertical/circular right
    Fec auto

    What does it mean when I can lock on to both vertical and circular right polarity?

  2. #2
    canine consultant Expert
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    Feb 2004
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    over the Hill, and down the road
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    Quote Originally Posted by homesolutions View Post
    hi

    I changed the measat lnb from a normal ku to a extra gain prime focus lnb. After rotating the lnb, I managed to lock on with satfinder
    What does it mean when I can lock on to both vertical and circular right polarity
    Circular polarization, was used on some of the old Intelsat satellites on C-band,
    The main advantage is you don't need to optimize the LNB setting, Anywhere will do. Most standard C band LNB's come with a fibre plate, this slides into two slots or ridges on the inside [throat] of the LNB, this will convert the LNB for Circular use.
    With Ku-band there is no plate an a dedicated LNB is required, Pay TV servers the like of "Dish Direct" and "Prime" use this system. Again main advantage is the LNB does not require adjustment.

    In the old Analogue days many receivers [digitone, echostar [ had 4 LNB settings Horizontal, Vertical, Left and right polarization. Today with the advent of digital, Vertical and lefthand polarization use the same settings, as does Horizontal and righthand polarization.
    regards from OZ bassett

 

 

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