[Antennas] Re: balun ratio

Roy royanjoy at ncn.net
Sat Jun 23 12:15:49 EDT 2007


About,

"I just found and old balun in a shack's closet.  It's marks are erased. 
How
do I know its in to out ratio?"

Thanks.

Dave, W4DN
(EX-KP4AM)


Dave,

Hook its output side to a 50 ohm resistor load made of series/parallel junk 
resistors. Run just enough power to see if your swr reads 1 to 1. If it does 
(and this is likely because more baluns are 1 to 1), then it is a 1 : 1 
balun. If your swr reads about 4 to 1, it's a 4 : 1 step-up.

73,    Roy    K6XK 



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