Jim,
OK, I am working on a similar arrangement with 4 elevated radials at 14
feet. Hence the question.
thanks,
Bob
K6UJ
On 12/15/15 3:41 PM, Jim Brown wrote:
On Tue,12/15/2015 3:33 PM, Robert Harmon wrote:
Do the 160 verticals with 4 radials elevated at 20 feet, individually
outperform the other vertical with 60 radials on the ground ?
I have no meaningful way to measure that, but work by N6LF and N6BT
suggest that radials elevated by 20 ft can approach 30-60 radials on
the ground. The key word is "approach," with the obvious question, how
closely? I'd guess within a dB or so. N6LF suggests that 8 elevated
radials tend to be more efficient than only 4, because the greater
number tend to achieve better balance between radial currents, which
in turn maximizes efficiency.
73, Jim K9YC
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