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  1. #1
    dibaci Expert
    Join Date
    Oct 2002
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    44.26’24 /26.10'50
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    Default Poze antena activa UIF

    Am ars ampliful din ea cu supratensiune.Asa ca am desfacut-o



    Dupa cum se observa are un element activ(dipol deschis) si un reflector.
    [SIGPIC][/SIGPIC]

  2. #2
    Banned Expert
    RDI - Board Banned Avatar

    Join Date
    Jul 2007
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    1,798
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    Default

    super tari capacele alea , mai ales cum arata 1 amplificator miniatura ) deoamne ce tare ..
    apropo am fost la telefon si am vb cu turcu cu antene care aduce simulatn SWA / Turcesti / Poloneze
    auzi ca OE33A tranzistoarele sunt mai sus cu 15dB fata de bfr91 hopa .. dar tot el a zis ca noise geometry depaseste 3dB ..

    deci tot de la el am aflat ca ala de antena turceasca are fix 18dB cu 3 bfr-uri si asta care il am eu duce lejer 27dB
    bai o intrebare .. e adevarat ca dipolu deschis in uif scapa de reflexiile alea amare cu dublura pe tv sau e tzeapa fatza de dipolu inchis ?

  3. #3
    Junior Member Teacher
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    Join Date
    Oct 2005
    Posts
    219
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    @Satenicu

    Asa cum ti-am spus , daca nu gasesti CI-ul ( U1 , banuiesc ca e integrat ) , defrisezi toate pisele si legi direct dipolul la borna de iesire print-o bucata de cablu coaxial si folosesti un amplificator de catarg AM-112 sau AM-115 care este peste cel din antena.

 

 

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