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Base antenna

Discussion in 'CB Antennas' started by Jugge265, Apr 15, 2018.

  1. Jugge265

    Jugge265 New Member

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    Putting a base station in. I have a steel pipe drove in ground. going to mount my 20 ft antenna to the pipe that is even with eve of my house. How high do I need to put the antenna above the house? Mount the antenna to top of post or mount it on down the pipe?


     

  2. Marconi

    Marconi Usually if I can hear em' I can talk to em'.

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    265, have you figured out what antenna you want to install?

    Higher is always better, but try and get the bottom of the antenna a few feet above the highest point on your roof...at least 5' feet or more..
     
  3. Jugge265

    Jugge265 New Member

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    Yes it's a Shakespeare 20ft fiberglass. The top of the antenna will be around 35 to 40 ft off the ground and I live on top of hill compared to everybody around me
     
  4. jon666

    jon666 Well-Known Member

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    height it might.
     
  5. fourstringburn

    fourstringburn W9WDX Amateur Radio Club Member K5KNM

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    Mount the antenna as high as possible.
    It's the height above ground at the base of the antenna that matters more.

    1 wavelength of the frequency you use is best especially for ground wave. This would be 36ft at 27 MHz.
    This height usually requires guy wires for support.

    18ft (1/2 wavelength) at the base of the antenna will be a good compromise for local and DX since you have elevation over other local stations. DX will still be good at the elevation at your location but it won't come into play like it will on ground wave unless your antenna is right on a hill.
     
    #5 fourstringburn, Apr 15, 2018
    Last edited: Apr 15, 2018
  6. Jugge265

    Jugge265 New Member

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    Would it be better if I put the metal pole to the side of the side of the chimney? Let it sit about 2ft below the top of the chimney (enough to mount the pole) the attach the antenna to the metal pole. The would out the base of the antenna about 25 to 30 feet off the ground
     
  7. jessejamesdallas

    jessejamesdallas Sr. Member

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    If it were me...I would have the base of the antenna at least 10' above the tallest part of the roof (or chimney)... but that's just me...I'm a firm believer in "Height is Might"...
     
    357magnum and Marconi like this.
  8. Jugge265

    Jugge265 New Member

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    The peice of pipe I got is about 15ft. So that would put the base of the antenna about 12ft from the roof
     
  9. Marconi

    Marconi Usually if I can hear em' I can talk to em'.

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    Make sure your chimney is strong enough to support the antenna and mast. They are not cheap to repair.
     
    357magnum and 543_Dallas like this.
  10. M0GVZ

    M0GVZ Sr. Member

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    Higher is better for local comms, for DX it makes no difference for a vertical antenna. If there's a hill blocking line of sight between your antenna and a local station you want to talk to you're still not going to be able to talk to them no matter what you do. Being on high ground above everyone else will give you enough of an advantage that height won't matter for local contacts.
     
  11. 543_Dallas

    543_Dallas Sr. Member

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    I didn't know you were still on the cb. I guess i need to put up a beam pointing east.
     
    tuner and jessejamesdallas like this.
  12. jessejamesdallas

    jessejamesdallas Sr. Member

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    say when! I'll swing the house around back west.
    [​IMG]
     
  13. Jugge265

    Jugge265 New Member

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    What kind of antenna is that
     
  14. Jugge265

    Jugge265 New Member

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    I do live in hills and hollars I'm just on top of hill compared to the town where I live. What would be a good antenna? The one I'm putting up is a Shakespeare it was give to me a few years back but would like to upgrade
     
  15. jessejamesdallas

    jessejamesdallas Sr. Member

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    Maco shooting star...dual polarity.
     
    tuner, murdog and ShadeTreeMechanic like this.

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