[TowerTalk] TowerTalk] element tapering calculation

[Steve W3AHL]

Yes, I guess it could, but why not just model the tapered elements, rather than convert them to single-diameter in the model?  It would be less work and possibly more accurate.

Steve, W3AHL
  ----- Original Message ----- 
  From: PY1NB - Felipe Ceglia 
  To: Steve W3AHL 
  Cc: towertalk at contesting.com 
  Sent: Tuesday, November 27, 2012 8:49 AM
  Subject: Re: [TowerTalk] TowerTalk] element tapering calculation


  Hi Steve, 

  Thank you for replying.

  Does it reverts tapered back to single wire?

  I want to model my current 20m tower + 40m moxon + 20m yagi to see how can I load it as a vertical for low bands, so I want to move from tapered to single wire as well.

  73,

  Felipe Ceglia - PY1NB
  -------------------------------------------------------------------------------------
  PR1T team member /// Rio DX Group member /// Araucaria DX Group member
  http://dxwatch.com /// http://reversebeacon.net /// http://riodxgroup.com




  On Tue, Nov 27, 2012 at 10:31 AM, Steve W3AHL <w3ahl at att.net> wrote:

    I use DX Engeineering's Yagi Mechanical.  You design an antenna with a constant element diameter using EZ-NEC or similar.  Yagi Medchanical is used to take that design and change the element taper schedule to achieve the required mechanical properties to withstand wind and ice loading.  As you change the element taper it calculares the new resonate frequency of the element, so you can adjust the tip length to keep resonance the same as the original design.

    You can download a trial version and instruction manual from:

    http://www.dxengineering.com/parts/dxe-sof-yagimech

    It has instructions on how to install for Windows 7.  Cost is $39 US.

    Steve, W3AHL


      Hi folks,

      I'd like some advice on software, scripts or ways to convert single
      diameter tubing into tapered element, and back.

      I've been advised to try ON4UN's software, but I could not run it on
      windows7.

      Thanks,

      Felipe Ceglia - PY1NB


    _______________________________________________



    _______________________________________________
    TowerTalk mailing list
    TowerTalk at contesting.com
    http://lists.contesting.com/mailman/listinfo/towertalk