[Elecraft] Balun Questions

[Tom W8JI]

Ok I was referring to a design that was using one core to make a
4:1...  I think the caveat that was being used was that they felt they
could do this and be safe enough with it still being a balun as long
as the load was floating (but I'm not 100% sure thats really the
case)...>>>

I can 100% guarantee you that does not balance the load. I know the design 
comes from a source considered reliable, but it is seriously flawed. If you 
want a balanced voltage and/or current into a feedline and a real antenna, 
it cannot happen with that design. It not only does not work in theory, I 
have dozens of actual measurements to support it does not work in the real 
world.

<<So is a multi aperture core good enough for that or would two toroids
be a better idea?>>

So long as the multi-aperture core does not have mutual coupling between the 
individual transmission line cores, it would work. Unfortunately that is not 
likely either. :-)

73 Tom