[Elecraft] EC! competition: Balanced auto ATU

[Vic Rosenthal]

Ron D' Eau Claire wrote:
> 
> The main interest in balanced feedlines for me and most ops I know is to be
> able to run very high SWR's on the feedline with multiband doublets, G5RV's,
> etc., and not suffer excessive losses. That means very high SWR's on the
> feedline. High SWR's mean that the ATU has to deal with very large impedance
> transformations efficiently, and it has to be able to handle very high
> voltages when it sees a high impedance at the feeder or very high currents
> when it sees a low impedance at the feeders.

Absolutely right.

Which means that a tuner with a built-in balun on the output side won't cut it!

73,
Vic, K2VCO
Fresno CA