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			"It was the second most sensitive detector to the V1." 
 
Sensitivity is only half of the picture. Selectivity is another. It's easy to make a hyper-sensitive detector that will beep in a two mile radius around every store's  automatic door -- rendering itself useless. Knowing the number of sources and their direction also makes a big difference, imho.
		 
		
		
		
		
		
		
			
		
		
		
		
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