05-15-14 18:04 Roy Witt wrote to Holger Granholm about confused yet :-)   
      
    RW> @MSGID: <5375EB02.454.amtradio@capcity2.synchro.net>   
    RW> @REPLY: <53749983.437.amtradio@capcity2.synchro.net>   
    RW> Greetings Holger!   
      
    LF>> A director leads an orchestra when playing music. Radials are those   
    LF>> "elements" that are excited when radiating RF. The only thing   
    LF>> confusing about this are the molecs who're heating up those radials   
    LF>> because of their activity.   
      
    HG> The exited elements are named radiators or driven elements.   
      
    RW> Yes, in a yagi or dipole.   
      
    HG> The reflector(s) and director(s) are parasitic elements.   
      
    RW> No, they're mirrors and orchestra leaders. I think of your   
    RW> version of reflectors as RF image deflectors and your directors   
    RW> as RF guidence elements. Especially in a yagi antenna. Not so   
    RW> much as in a LPDA, as only some of the elements are excited,   
    RW> while those which are not in use for a radiated RF signal at a   
    RW> frequency in the design limitations of the particular antenna   
    RW> are not.   
      
   Howdy! Roy, Lisa and Holger,   
      
   On page 609 of my copy of the A.R.R.L. The Radio Amateurs Handbook,   
   1976 version.   
      
   Under the Topic "DIRECTIVE ARRAYS WITH PARASITIC ELEMENTS"   
   Sub-Topic "Parasitic Excitation"   
   In the Second Paragraph it has the words "parasitic", "director" and   
   "reflector".   
      
   Did the A.R.R.L delete that info from the 1977 'Handbook' You have?   
   I Think Not!   
      
   73, or is that suppose to be Ten Roger Good Four Buddy?   
      
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