[Antennas] Re: Elevated Ground Plane Question

[email protected] [email protected]
Tue, 08 Oct 2002 07:29:00 -0500


Put the radials at the TOP of the vertical? Nope..leave them as is....
They either need to be horiz or slope DOWN...not up...

Chris
WB5ITT
Asst Radio Chief Egr
Liberman Broadcasting, Houston

Ron W7MRR wrote:
> 
>  Hi All:
> 
>    I have a 160 meter, 1/4 wavelength wire vertical that is feed approximately 30 feet off the ground.  The radials are horizonal from the feed point and parallel to the ground.  I have the opportunity to raise the radials to a height that is almost as high as the top of the vertical radiator [approximately 160+ feet] and am wondering if this will enhance the antenna effectiveness or not.  I am concerned about wave cancelling.
> 
>    If anyone has a software program where this situation can be simulated, I would be very interested in the results.  I will try it out in any case, but am interested in what modeling or experience suggests.  Please note the radials would now start at the feed point some 30 feet off the ground with the other end being elevated to 160+ feet.
>