Which is better, 2 separate toroidal cores for a Guanella 4:1 currentbalun or 1 toroidal core?
 

I've been reading several articles on how to build a Guanella 4:1
current balun. Some articles show a single toroidal core being used
for all windings, and some articles show two separate toroidal cores
being used. Which is better?

Thanks,

Michael Rawls
KS4HY