+ Post New Thread
Results 1 to 9 of 9
  1. #1
    Newbie level 6
    Points: 1,701, Level: 9
    Achievements:
    7 years registered

    Join Date
    Feb 2008
    Location
    USA
    Posts
    11
    Helped
    0 / 0
    Points
    1,701
    Level
    9

    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.

  2. #2
    Full Member level 5
    Points: 3,879, Level: 14

    Join Date
    Jan 2004
    Location
    Mideast US
    Posts
    290
    Helped
    24 / 24
    Points
    3,879
    Level
    14

    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 !



    •   Alt16th February 2017, 17:06

      advertising

        
       

  3. #3
    Newbie level 6
    Points: 1,701, Level: 9
    Achievements:
    7 years registered

    Join Date
    Feb 2008
    Location
    USA
    Posts
    11
    Helped
    0 / 0
    Points
    1,701
    Level
    9

    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



  4. #4
    Full Member level 5
    Points: 3,879, Level: 14

    Join Date
    Jan 2004
    Location
    Mideast US
    Posts
    290
    Helped
    24 / 24
    Points
    3,879
    Level
    14

    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 !



    •   Alt17th February 2017, 16:42

      advertising

        
       

  5. #5
    Newbie level 6
    Points: 1,701, Level: 9
    Achievements:
    7 years registered

    Join Date
    Feb 2008
    Location
    USA
    Posts
    11
    Helped
    0 / 0
    Points
    1,701
    Level
    9

    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



  6. #6
    Advanced Member level 5
    Points: 31,683, Level: 43

    Join Date
    Oct 2001
    Posts
    4,544
    Helped
    1317 / 1317
    Points
    31,683
    Level
    43

    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
    Super Moderator
    Points: 231,316, Level: 100
    Awards:
    1st Helpful Member

    Join Date
    Jan 2008
    Location
    Bochum, Germany
    Posts
    39,929
    Helped
    12199 / 12199
    Points
    231,316
    Level
    100

    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

      advertising

        
       

  8. #8
    Newbie level 6
    Points: 1,701, Level: 9
    Achievements:
    7 years registered

    Join Date
    Feb 2008
    Location
    USA
    Posts
    11
    Helped
    0 / 0
    Points
    1,701
    Level
    9

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

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



  9. #9
    Newbie level 6
    Points: 1,701, Level: 9
    Achievements:
    7 years registered

    Join Date
    Feb 2008
    Location
    USA
    Posts
    11
    Helped
    0 / 0
    Points
    1,701
    Level
    9

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

    I bought the IC through Digikey & The antenna analyzer is back in action, Thanks again all & Special thanks to FvM



--[[ ]]--