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
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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