Topband: Inverted L improvements - Part 3 (now with data)

Grant Saviers grants2 at pacbell.net
Tue Jan 22 22:25:18 EST 2019


Al Christman K3LC thoroughly sliced and diced the tradeoffs of number vs 
length for given total wire investment is his Mar/Apr 2004 NCJ paper.

N6LF also has a lot to say.

Grant KZ1W

On 1/22/2019 16:11 PM, Chortek, Robert L. wrote:
> “Wes cut his radial length to match the vertical L section height (see N6LF
>> reference).  He didn't reduce the number of radials.”
> 
> I didn’t think it was the “shortening” OF the length of the radials that would improve performance e.g. going from 10 125’ radials to 10 55’ radials (in the case of a 55’ vertical); rather, it was the fact that 10x 125’ of wire could be better employed to increase the number of radials, albeit resulting in shorter radials, that decreases the ground loss (since most is nearer the base of the vertical).  If I’m correct, then shortening a given number of radials should decrease loss or improve performance....
> 
> 73,
> 
> Bob AA6VB
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