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Are these wide range of levels normal?

  • 28-10-2014 11:56pm
    #1
    mrtom
    Registered Users, Registered Users 2 Posts: 687 ✭✭✭


    On Astra 28.2, which channel has the highest signal level and which has the lowest?
    My HD100 shows 71% for ITV1; 48% RT & 42% CBS Action. Are these wide range of levels normal?


Comments

  • #2
    Nowso
    Moderators, Sports Moderators Posts: 5,703 Mod ✭✭✭✭Nowso


    your dish is slightly off and needs realignment


  • #3
    mrtom
    Registered Users, Registered Users 2 Posts: 687 ✭✭✭mrtom


    Nowso wrote: »
    your dish is slightly off and needs realignment

    So do all sig levels drop or does the range in different levels increase?


  • #4
    Nowso
    Moderators, Sports Moderators Posts: 5,703 Mod ✭✭✭✭Nowso


    they can drop slightly with weather shouldnt be 40 or 50 . your dish has moved off in the wind


  • #5
    winston_1
    Registered Users, Registered Users 2 Posts: 1,688 ✭✭✭winston_1


    LNBs are not flat over their wide passband. Cable losses increase with frequency. Different satellite transponders have different footprints and signal levels. Different receivers are calibrated differently, 48% on one may be 70% on another. And yes you dish alignment will affect things.


  • #6
    mrtom
    Registered Users, Registered Users 2 Posts: 687 ✭✭✭mrtom


    winston_1 wrote: »
    LNBs are not flat over their wide passband. Cable losses increase with frequency. Different satellite transponders have different footprints and signal levels. Different receivers are calibrated differently, 48% on one may be 70% on another. And yes you dish alignment will affect things.
    Thanks winston 1. I notice my no brand “HD 100” http://www.tvtrade.ie/hd-satellite-receiver.html always gave lower signal levels than its predecessor. I assume its a less sensitive device.
    I don't experience “rain fade” though occasionally channels have disappeared and I've had to rescan. I've done minor tweaking with my dish picking the weakest channel to optimise, but no improvement. So no major issues, however my question is about whether the range, not the level, from 71% for ITV1; 48% RT & 42% CBS Action is normal? I do follow that transponders have different power outputs.
    Thoughts welcome.


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  • #7
    Nowso
    Moderators, Sports Moderators Posts: 5,703 Mod ✭✭✭✭Nowso


    no start from sky news which is one of the weakest and get the highest u can on that


  • #8
    mrtom
    Registered Users, Registered Users 2 Posts: 687 ✭✭✭mrtom


    Nowso wrote: »
    no start from sky news which is one of the weakest and get the highest u can on that

    Interesting, as I write Sky News is 42% & CBS Action 37% !


  • #9
    Thurston?
    Closed Accounts Posts: 2,278 ✭✭✭Thurston?


    mrtom wrote: »
    ... I don't experience “rain fade” though occasionally channels have disappeared and I've had to rescan.

    If you're not having any problems with viewing, just ignore the signal readings.

    If you had to rescan channels because they moved to a different transponder, then obviously that's nothing to do with your signal levels. Signal quality is more informative anyway.


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