[TowerTalk] Grading a ground radial system

[Dinsterdog@aol.com]

The reason I didn't mention the antenna is because I already did last  week.  
Sorry.
 
It is the Cushcraft 4080V and is a 1/4 wave length on 80M.  
 
The responses make sense except for one thing.  
 
No one yet has explained why my 2:1 SWR bell curve is broader with the  
radials attached.  I thought without radials, I would see significantly  more 
bandwidth with the ground losses being greater.
 
I agree with the 33 +- ohm range.  My 80M 4 square in Wyoming with 240  1/4 
radials and 160M Inv L with 120 1/4 radials each had around 30-33+- ohm  
impedance's.
 
I'm just confused on this multiband stuff as this antenna is designed for  
40M and 80M.  Right now the lowest impedance reading at resonance I have on  40M 
is 50 ohms.  So it looks like the antenna is more efficient on  80M?  This 
does not sound right.
 
My radial field is 20 wires in a 40 degree pattern averaging 30 feet in  
length.  Some are short as 10 feet while some goes as long as 90  feet.  Sorry if 
this is repetitive but new responses have asked-
 
Any suggestions/comments appreciated
 
73-
 
Paul  N0AH