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CB Antenna not tuning with Camper Shell

Discussion in 'Technical Chat' started by Gkim16, Jun 7, 2017.

  1. Jun 7, 2017 at 6:44 PM
    #1
    Gkim16

    Gkim16 [OP] Well-Known Member

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    Hi Guys. Looking for help from the CB gurus out there.

    First my issue and then how I have my setup installed.

    Tuning location: Top of 7 story parking structure with buildings approximately 150 feet away in all directions and a freeway just a stones throw down 7 stories.

    With my car turned on and my camper shell door OPEN, my SWR is reading slightly above 1 on channel 1 and 40.

    With my car turned on and my camper shell door CLOSED, my SWR is reading is 2.5 on channel 1 and 40.

    I have my antenna mounted between the tailgate and my rear passenger fender to the inside of the bed. I grinded the paint off prior to mounting. The coax runs behind my taillight, over the rear wheel well, along the frame and up the passenger side through a grommet. I had enough coax to run it behind the center console and out to the driver side of the center console. My radio sits to the right of my right leg.

    Midland 1001LWX
    Francis 300-CB240 4' Hot Rod CB Antenna
    18' RG-58A/U Coaxial Cable With Pl-259 Connectors
    FireStik SS-204A Adjustable stainless steel vertical door jamb mount


    What adjust should I make to get the SWR down? Besides removing my camper shell door.
     
  2. Jun 7, 2017 at 6:50 PM
    #2
    mwc273

    mwc273 Earning my EAF sticker, one mod at a time.

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    That is really weird.
    Get a Wilson magnet mount, put it on the roof of the cab.
    Best advice I can give you...
     
  3. Jun 7, 2017 at 6:55 PM
    #3
    Gkim16

    Gkim16 [OP] Well-Known Member

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    I've thought about that. Where do you run the coax through without drilling holes in the roof?

    I had it tuned perfectly when the radio was on the passenger side and the coax was running through the camper shell/bed, through the middle windows and underneath the back seat to the front. But it rained and I had to relocate it cause I couldnt shut my windows all the way.
    SWR was reading 1.2-1.5. Same mounting location for the antenna.
     
  4. Jun 7, 2017 at 7:02 PM
    #4
    mwc273

    mwc273 Earning my EAF sticker, one mod at a time.

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    I ran the coax down the back of the cab, between the cab and the bed, then up through a grommet under the back seat, under the storage bin and under the carpet and popped out under the console, through the console up to the dash. Works great. Wilsons always have worked well for me. And if you get the Wilson 1000, the antenna unscrews from the base for when you need to get in a tight space. The base just stays up there as it's no taller than the shark-fin.
     
    nocturne likes this.
  5. Jun 11, 2017 at 7:25 AM
    #5
    boulderbean

    boulderbean Member

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    "I have my antenna mounted between the tailgate and my rear passenger fender to the inside of the bed."
    Does this mean the antenna is inside the camper shell?
     
  6. Jun 11, 2017 at 9:25 AM
    #6
    Gkim16

    Gkim16 [OP] Well-Known Member

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    Negative. It's on the outside of the camper shell.

    I ended up buying the Wilson Lil and will be relocating to the top center of the cab. Thanks guys.
     
  7. Jun 11, 2017 at 9:27 AM
    #7
    Sandman614

    Sandman614 Snarky TWSS elf, Travis #hotsavannahdotcom, LRGRNR

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  8. Jun 12, 2017 at 9:07 PM
    #8
    Gkim16

    Gkim16 [OP] Well-Known Member

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    Best picture I have of it right now.

    IMG_8379.jpg
     

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