05-15-14 18:04 Roy Witt wrote to Holger Granholm about confused yet :-)

 RW> {at}MSGID: 
 RW> {at}REPLY: 
 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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