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Thread: Intrebare?

  1. #1
    Junior Member Friend
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    Default Intrebare?

    care stie cum se modifica un lnb normal H,V in R,L

  2. #2
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    in mod normal la setarile lnb-ului.nu ne spui pentru care banda ku sau c?

  3. #3
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    BANDA KU

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    scuze,am citit in viteza si nu am prins sensul intrebarii.schimbarea o poti
    face cumparind unul cu polarizarea dorita,in cazul tau costa in jur de 36 euroi,si schimbindu-l.

  5. #5
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    Se pune o placutza de plastic in feedhorn la 45 de grade fata de cele doua "sarme" care receptioneaza H si V.
    O sa ai o atenuare a semnalului cu aceasta ocazie.

  6. #6
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    Dar polarizarea L si R e tot in banda Ku? Sau se refera la banda C?

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    ca sa intelegeti mai bine astai problema:cum fac sa prind satelitul NTV Plus on Eutelsat W4 at 36.0°E aici are fregventa 12245 R tp 28SR 27500FEC 3/4 si 12380 Ltp 35SR 27500FEC 3/4,cum este cu R si L,in banda KU,stie cineva?

  8. #8
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    schimbarea o poti
    face cumparind unul cu polarizarea dorita,in cazul tau costa in jur de 36 euroi,si schimbindu-l.
    banda ku, unul dintre ofertanti inverto(germany)
    mai multe gasesti la www.olbort.at ,intri la lnb-uri.

  9. #9
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    Ambele bande de frecventa KU si C contin, ce-i drept putine, TP cu polarizari circulare concretizate in pol. R drepta sau L stanga asa cum in pol. liniara avem H orizontal sau V vertical. @rz te poate lamuri cel mai bine in acest domeniu...ca el e expert in DX si banda C!
    Oamenii se nasc si mor, fara ca macar sa aibe idee unde se afla cu adevarat si care e sensul existentei.

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  11. #11
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    Eu am reusit sa separ destul bine polarizali L si R pe un LNB normal adaugand doar o bucata de sarma in feedhorn. Nu am obtinut maximul de semnal dar a fost mai mult decat suficient pentru a receptiona cu o antena de 1,20 tot pachetul NTV.
    Atunci cand treci pe TP-urile cu polarizare H, V trebuie sa dai jos sarma pt ca pierderile sunt mari.
    Sarma o prinzi cam asa :


    Mai multe informatii gasesti aici :
    http://www.********.com/f2/viewtopic.php?t=43814&start=0

 

 

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