Matching at the antenna/line junction
			 
			 
			
		
		
		
			
			I am confused by an issue and hope some of you gurus can help. 
 
I understand matching at the transmitter end.  Using the "right" length of 
line or an antenna tuner - oops, I mean conjugate matching device, I can get 
the rig to put all or as much power as it can into the line.  If I choose 
ladder line, it has very low loss in the line itself.  So far -- so good. 
 
But what happens where the line hits the antenna?  If the line is 50 or 450 
ohm and the antenna is exhibiting 2 ohms, isn't there a big mismatch and a 
lot of lost power?  How much?  Would the 450:2 mismatch lose more power than 
a 50:2 mismatch and thereby give up the advantage gained by the low loss in 
the 450 ohm ladder line.  I don't see this quantified in the antenna 
modeling programs. 
 
I realize in multiband use, the mismatch will vary so there is not a whole 
lot you can do except put the tuner at the junction of the antenna and line. 
So, why isn't that the "normal" way to handle the problem? 
-- 
Radio K4ia 
Craig "Buck" 
Fredericksburg, VA USA 
FISTS 6702 cc 788 Diamond 64 
 
 
		 
		
		
		
		
		
		
		
		
	
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