I have some LL2801. What are they used for and is there any data sheet available?

Sorry, but there is no data sheet for the LL2801.


LL2801 is a 600 ohm output transformer, turns ration 1:1  
Core:	Radiometal lamination, ED style.    
Usage:    
in+	7  
in-	6    
out+	9  
out-	10