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Gizmotchy Antenna Review

Discussion in 'CB Antennas' started by Happy_Hamer, Jun 21, 2010.

  1. Happy_Hamer

    Happy_Hamer Administrator
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    Friday I received the Gizmotchy antenna.

    Because of extreme weather in the Midwest i was not able to work on the antenna until today.

    I took pictures, some are blurry, sorry about that.




     
    #1 Happy_Hamer, Jun 21, 2010
    Last edited: Jun 23, 2011

  2. Happy_Hamer

    Happy_Hamer Administrator
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    Now I will post some assembly pictures, starting with the SWR readings after assembly.


    OOOOOPS how this get there? :D

     
    #2 Happy_Hamer, Jun 21, 2010
    Last edited: Jun 23, 2011
  3. Happy_Hamer

    Happy_Hamer Administrator
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    #3 Happy_Hamer, Jun 21, 2010
    Last edited: Jun 23, 2011
  4. mackmobile43

    mackmobile43 Jock Supporter

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    [​IMG]

    Hank Hill say butane is the bastard gas.
     
  5. Happy_Hamer

    Happy_Hamer Administrator
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    Here are a few pictures of the assembly process.

    There are no actual written directions. Unfortunately just a few pictures with some dimensions. :eek:

    Comments as I move along.
     
    #5 Happy_Hamer, Jun 22, 2010
    Last edited: Jun 23, 2011
  6. Happy_Hamer

    Happy_Hamer Administrator
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    More images,

    I will provide comments after I show the finished product, there was just a lack of written directions. I put this together based on some experience assembling HF Yagi style antennas in the past.
     
    #6 Happy_Hamer, Jun 22, 2010
    Last edited: Jun 23, 2011
  7. Happy_Hamer

    Happy_Hamer Administrator
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    more
     
    #7 Happy_Hamer, Jun 22, 2010
    Last edited: Jun 23, 2011
  8. mackmobile43

    mackmobile43 Jock Supporter

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    The boom pole must be quite thick for the one thumb screw per locking collar to not spin.
     
  9. Happy_Hamer

    Happy_Hamer Administrator
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    Well I will discuss that part later in the thread
     
    #9 Happy_Hamer, Jun 23, 2010
    Last edited: Jun 23, 2010
  10. Happy_Hamer

    Happy_Hamer Administrator
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    OK, the antenna is ready to go in the air, I had some assembly problems.

    I did not want to drill the stud until I made sure the SWR was ok as I am not unscrewing the sheet metal screw if I had to disassemble to readjust the element length.

    The antenna is set up on a temporary mast that is about 20 foot high so it can be worked on.

    Using the MFJ Analyzer you seen the results, both horizontal and vertical SWR seem ok.

    See my next post as to why it is not in the air yet.
     
  11. Happy_Hamer

    Happy_Hamer Administrator
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    Here is my question before it goes in the air.

    The picture assembly say the elements should be as follows.

    REFLECTOR = 109 INCHES

    SPACING FROM REFLECTOR TO DRIVEN = 3 FOOT 8 INCHES

    DRIVER = 105 INCHES

    SPACING FROM DRIVER TO FIRST DIRECTOR = 5 FOOT 2 INCHES

    DIRECTOR 1 = 100 INCHES

    SPACING FROM FIRST DIRECTOR TO THE SECOND DIRECTOR = 3 FOOT 8 INCHES

    DIRECTOR 2 = 100 INCHES

    All elements attach to the hubs are 1/2 O.D. diameter and reduce to a smaller 3/8 O.D. of the element.

    The Boom is 12 foot long

    Does this seem correct?

    Can someone double check this on Eznec?

    It just seems the front director should be a tad shorter than the first???

    I am just basing this off assembling a Moonraker and a Shooting Star.

    Help me out before I put this in the air
     
    #11 Happy_Hamer, Jun 23, 2010
    Last edited: Jun 23, 2011
  12. NorthStar

    NorthStar Administrator

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    Nice
     
  13. loosecannon

    loosecannon Sr. Member

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    from the Gizmotchy site:

    Gizmotchy® Power Booster

    The Gizmotchy® Power Booster consists of another set of director elements identical to those
    on the antenna plus an extension boom. Addition of the Gizmotchy® Power Booster adds
    forward gain to the Gizmotchy® antenna. One of more Gizmotchy® power boosters may be
    added. Weight of each power booster is 4 lbs.

    so at least you know that gizmotchy is aware that the second set of directors is the same length as the first.

    LC
     
  14. Happy_Hamer

    Happy_Hamer Administrator
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    Yuppers, just seemed like maybe I misread something and didn't want to mess up.
     
  15. bob85

    bob85 Supporting Member

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    it looks like very lightweight construction hamer, how thick is the wall on that tube?, if you don't have a caliper then a rough guide would be does the 3/8" fit with just the right clearance into the 1/2" like .058" wall or loose like .049"wall?


    nice trees
     

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