[Elecraft] Tuner efficiency question

[Mike Morrow]

>> Is there a modern tuner out there for balanced lines that
>> doesn't use a balun?


>I don't know of any.  There is nothing wrong with using a balun
>as long as the balun is looking into a relatively low SWR .

Even the MFJ-974, 974H, and 976 balanced line tuners use a 1:1 current balun
on the input (http://www.mfjenterprises.com/man/pdf/MFJ-974.pdf ).  I don't
suppose that's all that bad a design compromise, though when these MFJ
tuners were first announced I had hoped that we would see a modernized
Matchbox design.

There are plenty of the Johnson Matchboxes to be found at hamfests and on
ebay.  I found mine (the version rated for about 300 watts) at a small local
hamfest a few years ago for $50.  I wouldn't even consider trading or
selling it.

73,
Mike / KK5F