Topband: Question about on ground radials field.

[Jim Brown]

On 12/31/2020 11:47 AM, Jim Clymer wrote:
> This is somewhat related to the "Will radials on ground help?" thread. I
> have poked around in various discussion groups but haven't found a specific
> answer.

The best way to learn technical things is to study them, and, and the 
best recent work on radial systems has been published by Rudy Severns, 
N6LF, an ARRL Handbook contributor. All of his work is published on his 
website.

> Assuming I have a fairly decent radial system on the ground (60 radials of
> various lengths, some longer than 1/4 wave, many shorter), what happens if
> I elevate the feedpoint of a quarter-wave, base-fed vertical? Let's say I
> have an aluminum mounting post properly bonded to the radial plate, the top
> of which will serve as the "radial system" connection for the vertical. Is
> there some fractional part of a wavelength that the feedpoint could be
> raised and not lose the effectiveness of the on ground radial system?

Why do you want to do this? What are you trying to accomplish?

73, Jim K9YC