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CB Antenna Tunning???

Discussion in 'Technical Chat' started by ETaco23, Apr 12, 2014.

  1. Apr 12, 2014 at 8:46 PM
    #1
    ETaco23

    ETaco23 [OP] Marshall offroad Fabrication

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    I made me a custom bracket for my antenna, its like relentless's hood hinge bracket.. but on the passenger side.. well for the life of me cant get the SWR under 3.. I have a 4' composite antenna and 18' coax cable..
    And right now all channels are at 3+ swr... whats the deal?
    I know i have the antenna bracket connections for the coax correct but cant figure this out!! Help! Please..
     
  2. Apr 12, 2014 at 8:49 PM
    #2
    snowgod06

    snowgod06 UG legend wannabe

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    crap bolted and welded together....
    antenna could be to tall, are you making sure your in the open for tuning? No trees, power lines, buildings, stuff like that.
     
  3. Apr 12, 2014 at 8:53 PM
    #3
    BamaToy1997

    BamaToy1997 Wheel Bearing Master

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    As Snow mentioned, you should be in an open area, with no trees or buildings. I will ask this, are you SURE that you are using the SWR meter correctly? If not done the right way you will get incorrect high readings. Other things that will cause high SWR are broken wires in antenna, bad pins on the ends of the antenna cable, incorrectly mounted antenna base (not grounded properly, or signal conductor accidentally grounded) incorrectly connected cable ends.
     
  4. Apr 12, 2014 at 8:58 PM
    #4
    MrGrimm

    MrGrimm Mall Crawler

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  5. Apr 12, 2014 at 9:12 PM
    #5
    ETaco23

    ETaco23 [OP] Marshall offroad Fabrication

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    I will check the ground again.. because everything i read say it most likely is the ground...
     
  6. Apr 12, 2014 at 9:16 PM
    #6
    ETaco23

    ETaco23 [OP] Marshall offroad Fabrication

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    I am doing my reading correctly. And in the middle of a field.
     
  7. Apr 12, 2014 at 9:17 PM
    #7
    snowgod06

    snowgod06 UG legend wannabe

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    crap bolted and welded together....
    their must be some bad connection somewhere, or even possibly a crap antenna. <<--- that doesnt happen often, but is possible.
     
  8. Apr 23, 2014 at 8:07 AM
    #8
    ETaco23

    ETaco23 [OP] Marshall offroad Fabrication

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    Still not getting good SWR!! even after moving the antenna with a new mount and grounded the mount to the cab.
    The new mount is right next to my tool box on the drivers side..

    My next option's I think are either bad/crappy Coax or antenna.. Or its just the location has crappy Ground Plane and its just the way its going to be.

    Ive check continuity of everythng with a multimeter.. And everything seems good. even the coax.. But maybe the coax just sucks. Its a Radio Shack special. :)
     
  9. Apr 23, 2014 at 8:53 AM
    #9
    tan4x4

    tan4x4 Well-Known Member

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    Does your DB mount look exactly like this? If not, that could be the issue.

    [​IMG]
     
  10. Apr 23, 2014 at 5:33 PM
    #10
    ETaco23

    ETaco23 [OP] Marshall offroad Fabrication

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    yes, my connections are good and im getting no shorts...
     
  11. Apr 23, 2014 at 5:43 PM
    #11
    TXpro4X4

    TXpro4X4 Fuck Cancer!

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    What is an swr meter? And where would I find one?
    I have a cb, didn't know you needed to tune? It .
    Also how would you know if you needed at all?
     
  12. Apr 23, 2014 at 6:57 PM
    #12
    MrGrimm

    MrGrimm Mall Crawler

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    Get an SWR meter on eBay. Look up how to use one on YouTube. And yes it needs to be tuned.
     
  13. Apr 29, 2014 at 12:01 PM
    #13
    TXpro4X4

    TXpro4X4 Fuck Cancer!

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    Ok
     
  14. Apr 29, 2014 at 5:32 PM
    #14
    ETaco23

    ETaco23 [OP] Marshall offroad Fabrication

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    still havent got mine right yet.. Im going to try a spring on it next to see if that helps..
    Then I will do a new coax, (better quality)
     

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