I haven't taken, nor at the moment do I have, the time to analyze this, but I'll throw it out.
http://home.earthlink.net/~christrask/Trask4to1Balun.pdf Wes N7WS --- On Fri, 7/23/10, Tom W8JI <w...@w8ji.com> wrote: > > 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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
