On Mon, 29 Nov 2004 12:23:53 -0500, Ken  wrote: 
Does it matter? 
 
Hi Ken, 
 
The technique matters at the peripheries of what you seek to 
accomplish.  The tight conjunction of wires (the are properly 
transmission line) reduces their characteristic Z.  This is a positive 
attribute if you seek that characteristic.  Recall that the best line 
Z is found through the math of finding the root of the product of the 
two Zs being transformed (in other words, does that tight conjunction 
lend itself to this root of the product). 
 
However, there are many topologies in winding these items, and not all 
conform to this technique.  For some, you want separation so that the 
loss and isolation characteristics are maximized at the margins of 
frequency operation (typically high end use). 
 
So, yes it matters.  The real question is: Does it matter for you? 
 
73's 
Richard Clark, KB7QHC 
		 
		
		
		
		
		
		
		
		
	
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