GB> technical help needed

Crawfish crawfish at SURFMORE.NET
Tue Dec 24 20:32:49 EST 2002


Most of the info I have seen show 0.2 wavelength spacing between the driven
element and the reflector, and .1 to .15 wavelength spacing between the
driven element and the director, and .1 to .15 wavelength spacing between
directors.
                                                                    73,
                                                                    Joe
W4AAB
----- Original Message -----
From: rayfri <rayfri at networld.com>
To: <glowbugs at piobaire.mines.uidaho.edu>; <HEATH at LISTSERV.TEMPE.GOV>
Sent: Tuesday, December 24, 2002 3:00 PM
Subject: GB> technical help needed


> need some advice.  Whats the formula or method for determining how far
> behind a driven element the reflector should go?
> I'm building a 20 meter beam.  The driven element will be a shortened
> one...
> a dipole 102 inches on each side with loading coils on each half of the
> dipole at the
> feedpoint.  I know that reflectors are usually 5 percent longer than the
> driven element, but I need to know the formula or method for figuring
> how far behind the
> driven element to put a reflector.
> Ray  wa7itz
>
>

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