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  1. #1
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    FG-01 Antenna analyzer (YouKits) missing IC

    Hi All,

    just bought a non working Antenna Analyzer model FG-01, (made by YOUKITS) & after opening found out that the IC4 is missing
    see attached photo.

    If anybody can help me in identifying this IC & the source to buy the same

    Thanks in advance.

    •   Alt16th February 2017, 03:59

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    Re: FG-01 Antenna analyzer (YouKits) missing IC

    Ask the manufacturer if such IC4 is for an optioned variant. Their site has contact access :

    ----> https://www.youkits.com/products/you...nt=10780159171
    Abolish the deciBel !



  3. #3
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    Re: FG-01 Antenna analyzer (YouKits) missing IC

    Quote Originally Posted by Externet View Post
    Ask the manufacturer if such IC4 is for an optioned variant. Their site has contact access :

    ----> https://www.youkits.com/products/you...nt=10780159171
    Thanks for the Link, though i am sure the IC must have failed & some one has de-soldered it...you can see tast in the photo



    •   Alt17th February 2017, 05:43

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  4. #4
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    Re: FG-01 Antenna analyzer (YouKits) missing IC

    Come back after findings from the manufacturer answers.
    Did you follow the traces to the absent IC to check if has to do with external/internal battery operation circuitry option ? Post a sketch of the circuitry traced from observation.
    Abolish the deciBel !



  5. #5
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    Re: FG-01 Antenna analyzer (YouKits) missing IC

    from Circuit position the IC function could be a RF amplifier, I got the internal picture on the internet which shows the IC's package i have attached the picture for your reference.

    http://obrazki.elektroda.pl/9977746600_1487384734.jpg



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    Re: FG-01 Antenna analyzer (YouKits) missing IC

    The missing IC4 circuit seems to be a MMIC amplifier.
    The signal output of the IC3 (MAR04) it goes to C9, and from there to IC4 input.
    IC4 is DC supplied through the L3 inductor (choke), and its output goes to C7.
    From C7 the following circuit looks like a detector.
    Anyway, seems that your analyzer needs that missing IC4 circuit, otherwise would be more useless components on the board.


    1 members found this post helpful.

  7. #7
    FvM
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    Re: FG-01 Antenna analyzer (YouKits) missing IC

    According to posts in the Yahoo YouKits group, FG-01 uses a RFMD RF2317 amplifier which looks pretty much like the missing IC. http://www.rfmd.com/store/downloads/...data_sheet.pdf


    1 members found this post helpful.

    •   Alt18th February 2017, 15:32

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  8. #8
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    Re: FG-01 Antenna analyzer (YouKits) missing IC

    Thanks a lot FvM, that's a great help, I will check on getting this IC.



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