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helical antenna

Discussion in 'Electronic Design' started by TT_Man, Aug 7, 2007.

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  1. TT_Man

    TT_Man Guest

    Does the material matter? Usually they are made of copper wire, but is there
    any reason not to use spring steel?
    TIA
     
  2. budgie

    budgie Guest

    For normal mode HF mobile whips, I'd expect the obvious - ohmic resistance - to
    figure in there. As the radiation resistance of these is v.low the efficiency
    will suffer as the conductivity goes down.

    For axial mode types more usually found on VHF/UHF (where circumference
    approximates a wavelength), the conductor material is largely selected for
    mechanical properties. Stainless is quite common in commercial units.
     
  3. Rich Grise

    Rich Grise Guest

    If you just want stiffness, I'd look at beryllium copper or phosphor
    bronze.

    Or, for that matter, aluminum - it'd be the lightest of the lot.

    Good Luck!
    Rich
     
  4. LVMarc

    LVMarc Guest

    tHE DEVIL IS IN THE DETAILS.. HOW DO SOLDER AN RF CONNECTOR TAB TO
    SPRING STEEL?

    lvmAC
    www.fwt.niat.net
    http://www.youtube.com/profile?user=LVMarc
     

  5. By using lowercase solder, uppercase solder is ok in swimming pools,
    casino's and brothels, like the rather good one a couple of Km from
    here, all the police use it


    Martin
     
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