Topband: Fwd: radals fer 160m vertcal

[Jim Brown]

On 5/4/2012 5:52 PM, James Rodenkirch wrote:
> What about radials above the ground?  Like what I'm planning to install --- base of the vertical at around 5' to 6' above ground and slope all of the radials from that 5' or 6' point down to the ground?

N6LF has published extensive work that he did on 40M showing that 
radials elevated only a feet or so were quite effective, and that a foot 
higher was better, but close to many radials on the ground.  I tried 
scaling this to 160M, placing radials at about 5 ft.  They were NOT 
particularly effective, and I had the chance to discuss the issue with 
N6BT, who has studied elevated radial systems extensively on 160M.  
Paraphrasing Tom, the earth at 160M is a rather different animal than it 
is at 40M.  Tom suggested that 16 ft was a better height for a few 
elevated radials on160M, and I hope to move the ones on my experimental 
antenna to that height in the next month or so, perhaps even before 
leaving for Dayton.

73, Jim K9YC