[Elecraft] Why need a balanced line tuner?

[Don]

A balun at the input of a tuner is looking at a reasonably low SWR.  A balun 
at the output is looking into the feedline which will typically be running 
at a high SWR.
Baluns only work well when looking into a low SWR.  They can experience very 
high losses otherwise as well as failing to function as a balun.


Don K7FJ

>
> In fact, the balanced tuner has a balun at it´s front end, looking towards 
> the transmitter. Other tuners have the balun at their backdoor, looking 
> towards the feedline.
>
> What is now the advantage/disadvantage of which concept? Can anybody 
> explain that to me?
>
> Yes, I am happy with my MFJ, but being an Elecraft-maniac in the meantime, 
> I would like to have the autotuner, which would need the extra balun.
>
> Thanks to everybody undertaking the effort to answer me.
>
> Karsten
> DK4AS