[Elecraft] RE: "G5RV" antennas

[Sandy, W5TVW]

    What you are speaking of is the "W2DU" balun.  Actually a "choke" type
balun
popularized by Walt Maxwell, W2DU.  There isn't any loss in this type of
balun.
There are two versions available, one that is a stack of ferrite cores along
a
length of coax cable giving a 1:1 balanced to unbalanced balun.  The other
is a
bit more involved, but gives a 1:4 transformation ratio.  The "Wireman"
www.wireman.com carries kits for both models.
73,
Sandy W5TVW
> Sandy,
>
> You seem to have a good handle on the subject.  I am wondering if what you
> said about a balun goes for the type where you just put the coax straight
> through a bunch of toroids.  As I understand it this is really meant to
keep
> the RF from riding back down the outside of the shield, not really to
match
> balance to unbalanced feeds.
>
> Does that type suffer from the losses and problems that you mention below?
>
> Fran