Topband: QRP

[Jim Brown]

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