Topband: QRP

[Robert Harmon]

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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