[Antennas] Balun Measurements

[Charles Greene]

At 11:21 AM 1/7/2002 -0500, you wrote:
>Hi Chas,
>
>you wrote:
>
> > The balun is a small 1:4 current balun that I have run up to 100
> > watts, wound on a FT114-43 toroidal core.
>
>I wonder how you managed to build a 1:4 current-balun with just one core. How
>did you wind it ?
>
>73
>Karl,


I'm sorry, this particular balun is wound on two cores; I misstated 
it.  However, I have built several current baluns wound on a single 
core.  You wind one set of bifilar windings on 1/2 of the core, then you 
wind a second set of bifilar windings on the other half of the core.  There 
is a write up with pics and schematics of single core baluns on Tom 
Hammonds's web site by Tom and myself: http://home.earthlink.net/~n0ss
I have found that the single core current balun does not perform as well as 
the two core current balun.







73, Chas, W1CG