[CQ-Contest] 4:1 Current balun for Off Center Fed dipole ???

Tom W8JI w8ji at w8ji.com
Mon Sep 3 20:17:45 EDT 2012

> I need a 4:1 CURRENT BALUN (NOT VOLTAGE BALUN) to avoid that antenna 
> current can flow on the feeder...
> In the Antenna Book chapter 26 I can see a current balun but said 
> "balanced to balanced", is it ok???...

A current balun functions perfectly as an un un, provided it is a real 
current balun.

Some baluns called current baluns are not.

The balun on 26-20B in the 18th Antenna book is marginally OK. It may not 
work perfectly, and require additional common mode choking on the 50 ohm 

73 Tom 

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