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Antenna Size?

Discussion in 'Ham Radio - CB - Trail Communications' started by storlied, December 30, 2007.

^^Searches ExplorerForum.com^^





  1. storlied

    storlied Well-Known Member

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    Antenna Questions?

    Currently I have a 4ft whip on top of my truck.. it's too big.. kinda and is kind of getting annoying hitting drive thrus n whatnot.. Do you suppose I'd get worse results if I went with a 2.5ft whip?

    What about if I moved it to near my hood?
     
    Last edited: January 9, 2008
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  3. Tbars4

    Tbars4 Moderator Emeritus Elite In Memoriam

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    ...magnet mounts are great and can be relocated easily...3' is a good size and pretty standard...i run mine on my passenger side cowl in low hanging areas and move it to the center of the roof for longer range and best reception....i hope this helps...:D
     
  4. storlied

    storlied Well-Known Member

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    I've thought about magmounts, but I don't wanna worry about scratching up my roof.....

    I like how I have mine currently mounted to the roof rack.. it's the best place imo... none of the body gets in the way... So you don't think going from a 4ft to a 2.5ft would affect it any?
     
  5. Tbars4

    Tbars4 Moderator Emeritus Elite In Memoriam

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    ...it will definately affect it...look at ritsui's and i think, it's mountaineer green who have spring loaded, fold down firestick's....also, search thru the antenna mount threads as someone on here makes and sells dual antenna mounts that are located at the top of the tail lights....;)
     
  6. storlied

    storlied Well-Known Member

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    Seen it, looks nice.. but still brings up the problem of the body being in the way.. so the best reception would be if the source was behind or to the rear sides...
     
  7. L4CX

    L4CX Active Member

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    Magnet Mounts won't really scratch up your paint if you make sure to wipe down the place your putting it and even put a small (clean) cloth underneath the magnet. The Mounts that Tbars mentioned are pretty cool looking. I think the 2.5 antenna wouldn't be a really good idea. You'd get reception, but not very good reception. The more you cut that antenna down the harder it is to Recieve that 11ft wave length. Most people will go with a Mag mount dead center just in front of the roof rack. It seems to work the best. Hope this helps. I'm sure you've been directed here before but www.firestik.com has some good tech/FAQ pages. GoodLuck
     
  8. storlied

    storlied Well-Known Member

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    I need something on my vehicle that'll make this antenna look less rediculous.. haha

    I want my damn safari bar!! aahh =P
     
  9. rizzjc

    rizzjc Scubajoe - Radio Mod Staff Member Moderator Elite Explorer

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    109 inches is about the 1/4 wavelength point for CB. If you shorten your antenna, you'd want to size it according to the wavelength, and tune it, not just cut it down. You'd want to cut it to the 1/8 wavelength, 1/16 wavelength, etc. But the most important thing if you are going to be cutting your antenna down, is to tune it.
     
  10. Sandy

    Sandy Well-Known Member

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    Check out the Wilson Communications Site and see what they have; I believe there is a 2 foot CB Antenna.

    http://www.wilsonantenna.com/fg.htm

    2, 3, 4, 5, and I believe 7 foot antennas. There is also a "Flex-Series" but the shortest is a three footer.

    As stated the taller, higher, and centered, will perform better, so shorter antennas will not perform as well as a longer antenna.

    As always there is a BUT... it will mainly depend on your use, if it is trail work then a shorter antenna usually works OK, if you are talking on the street and you want the last bit of distance you can get then the Higher the better.

    It always boils down to you, how when and why are you doing it ?

    Luck,
     
  11. Sandy

    Sandy Well-Known Member

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    storlied,

    how's this going ?
     
  12. storlied

    storlied Well-Known Member

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    I'm deciding to keep my 4ft whip until I find something short and thin like on ppls trucks on this forum.. something that's barely noticable.. i MIGHT go magmount but idk
    I don't like magmounts too much..
     
  13. Sandy

    Sandy Well-Known Member

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    What about one of the Wilson 2 footers or a 3 footer Flex-i-whip.
    The 2 footer would probably work out on the roof.

    Can you home brew a mount for the rack ?

    The only problem is the grounding of the antenna mount, the roof rack isn't grounded well enough to support the Antenna RF ground so an extra wire will have to be run to the frame.

    If you use a Quick Disco, then you can use a Rubber Duck designed for the CB Frequencies for trail use and the 2 or 3 footer for street use.
    A Rubber Duck Antenna is not match well so you will have to live with a little less talk on the trail.

    Luck
     
  14. storlied

    storlied Well-Known Member

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    Instead of my roof rack mount with the 4ft whip, would a magmount give a lower swr? doesn't it ground through the magnet and into the body, which goes to the frame?..

    Could you give me different examples of my options with a couple pictures?.. This 4ft antenna thing gets kind of annoying in drive thrus..
     
  15. storlied

    storlied Well-Known Member

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    Quick question, automatic car wash.. will this be a problem?
    I'll be taking off the antenna of course, and the spring.

    [​IMG]
     
  16. rizzjc

    rizzjc Scubajoe - Radio Mod Staff Member Moderator Elite Explorer

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    If you're taking it off, then what is your concern?
     
  17. storlied

    storlied Well-Known Member

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    The mount, I don't want anything to happen to it in an automatic car wash. I'd only be taking off the antenna and spring.
     
  18. rizzjc

    rizzjc Scubajoe - Radio Mod Staff Member Moderator Elite Explorer

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    If a car wash did anything to the mount, I'd want a different mount. I think you'll be fine.
     
  19. Sandy

    Sandy Well-Known Member

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    Automatic Car Wash can be a pain on mounting brackets but you can always wash the car by hand.

    The Magnet Mount will give you lower SWRs but only because it does as you said ground through the magnet.

    How about a Quick Disconnect below the spring on your existing mount, that might help but it will require retuning the Antenna.

    The Ground on the Roof Rack is poor at best if you are going to depend on the Mounting Hardware to make the connection. If possible, run a braided strap next to the Coax and have it go to the Frame and connect it there. Make sure to get to bare metal before connecting the Strap using Ring Lugs.
     
  20. storlied

    storlied Well-Known Member

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    Washing a car at -20 isn't too great, it would just be wiping on ice.. lol. Automatic car washes are pretty warm inside. I've actually got a seperate wire running from one of the bolts on the mount going to a screw in the middle console.
     
  21. Donner

    Donner Explorer Addict

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    Can you remove the antna, and leave the mount in place?

    How's it working for you so far? I'm picking one up as we speak, cb, it's about 1.5 H x 4.5 W x 6 L. How's the antna working out?
     

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