[Antennas] Re: Elevated Ground Plane Question

Wed, 09 Oct 2002 13:53:32 -0400

George are you confusing the 'discone' broadband design with the
descriptions in this thread?

Deacon Dave, W1MCE

"George, W5YR" wrote:
> 
> It is interesting that you see some commercial VHF and UHF antennas
> installed that way with the radials and the feedpoint at the top. I suspect
> that the applications for such an antenna are very few and a lot of
> conditions have to be met before it is superior to a conventional ground
> plane.
> 
> 73/72, George
> Amateur Radio W5YR -  the Yellow Rose of Texas
> In the 57th year and it just keeps getting better!
> Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
> K2 #489      Icom IC-765 #2349     Icom IC-756 PRO  #2121
> 
> alexander eban wrote:
> >
> > ...this is NOT top loading. A few years back MFJ put out what was called at
> > the time ;Top Fed Antenna. The rationale behind it was that since the energy
> > goes out at a slent angle from the radials and/or grounplane, feeding the
> > antenna at the top and moving the ground plane at the top would result in
> > radiation parallel to the ground. Actually it was shot into the ground! That
> > antenna was never  popular, probably because a lot of guys figured out
> > something's fishy. The only good thing of that antenna was the size. I
> > wouldn't recommend it, certainly not as a main antenna!
> >                         73 and all the best
> >                                 Alex    4Z5KS.
> - - -
> 
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> Larry Wilson KE1HZ [email protected]
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