Owen wrote:

...
Did you mean a two core design onto one core?

Here is an analysis of the single core version:
http://www.vk1od.net/balun/gsc/index.htm .

Guanella did not show the 4:1 balun on a shared magnetic circuit, and it
is an error on the part of those who think that the two independent TLTs
in Guanella's circuit can be coupled without changing the behaviour
significantly (basically, ruining it).

Owen

Let's cut the crap, currents in one winding which cause lines of force
in the toroid/ferrite-core, should only assist the lines of force
generated in the core by the other winding on the opposite side of the
core--in the single core model of the guanella balun--composed of two
1:1s in a 1:4 configuration (or guanella TLT, since you seem to prefer
acronyms.) At least TLT get the transmission line requirement out in
the open ...

Since toroids naturally demonstrate "economy of loss" in the magnetic
lines of force within their structure, few, if any, lines of force would
be shared between two separate cores, stacked.

Now, wasn't it Einstein who recommended that things only be made as
complex as necessary and not one iota more?--Or, watch out for the gray
haired man who keeps attempting to sneak behind the curtains in this
train ride though Oz--and KEEP HIM AWAY FROM THE LEVERS! ;-P

Regards,
JS

--
It is like a nightmare where the public servants are the people which
the police are supposed to protect us from!