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really stupid (green) question

Discussion in 'Communication (CB | GPS | HAM)' started by alec78, Oct 23, 2005.

  1. alec78

    alec78 1/2 ton status

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    Does the spring actually do anything or is it just to allow more give if the antenna hits something? If it does something functional, does the size, shape, number of coils do anything?

    Thanks!
     
  2. readymix

    readymix 3/4 ton status

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    It is just for flex. All it need is to be made of metal so that it conducts.
     
  3. Z3PR

    Z3PR Banned

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    Comes in pretty handy with a 102" Stainless Steel whip. Keep you from breaking the antenna off at the stud.
     
  4. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    If it conducts , and is inline between antenna and connector , the antenna would need to be trimmed to keep the swr as low as possible.
     
  5. bcrewcaptain

    bcrewcaptain Registered Member

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    it does both, it of course allows it to flop around more to keep from snapping off, but it also adds to the "electrical length" of the antenna to allow for the best tuning. A straight 102" is technically too short electrically until you add on the spring to it. Will your basic radio have an issue running it?NO, will it be an issue once you start dumping a little juice into it....yupper...sure could!
     
  6. Z3PR

    Z3PR Banned

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    I've never used more then a 500w foot warmer with a 102 on a pot belly spring, but had no issues with the 500w foot warmer.
     
  7. bcrewcaptain

    bcrewcaptain Registered Member

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    its all depends on the setup on how well you're gonna be able to tune it down, if you need to at all
    "techically speaking" the spring comes in handy, but I've been able to get a flat swr without a spring as well...
    those ants have enough flex built in you'll be ok in most cases without it...but it'll always be that one time....
     
  8. Z3PR

    Z3PR Banned

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    I always run the heavy duty (Pot Belly) spring with the 102. Just alway have.
     
  9. alec78

    alec78 1/2 ton status

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    Thanks for all the input. I guess I need to get one for my 102" whip.
     
  10. bcrewcaptain

    bcrewcaptain Registered Member

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    I have one I'd send ya but shipping it would be more than it is to pick one up....good ol radio shack has plenty usually!
     

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