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Which LNB for Digital?

Discussion in 'Satellite TV, Sky TV & FreeSat' started by Phil White, Feb 16, 2003.

  1. Phil White

    Phil White
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    Can I use a Cambridge AE31 Universal LNB - previously used on an analogue set up - to feed a Sky Digibox? I was thinking of matching it to a redundant 80cm dish. Thanks to anyone who has the answer!!!!
     
  2. Chris Muriel

    Chris Muriel
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    Yes, if it's universal. In theory "digital-ready" LNBs should have better oscillator stability and phase-noise. With an 80cms dish the extra antenna gain should help to obviate oscillator quality effects to some extent.
    Don't forget that the dish has to be realigned to 28 degrees east !

    Chris Muriel, Manchester.
     
  3. Phil White

    Phil White
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    Thanks Chris

    - so does 'universal' mean 'digital ready'.
     
  4. gbmitie

    gbmitie
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    yes, universal = digital ready.

    gb--
     
  5. Chris Muriel

    Chris Muriel
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    Universal actually refers to the fact that the LNB has 2 internal DROs (Dielectric Resonator Oscillators), 1 at 9.75 GHz & the other at 10.6 GHz , with switching between them via the presence or absence of an (approximately) 22 KHz tone whcih is sent up the coaxial cable from the STB to the LNB.
    All modern universal LNBs should be ok for digital in terms of oscillator stability.
    When the STB is correctly configured, the tone is sent automatically when a channel is selected in the higher band

    Chris Muriel
     

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