The most advantageous mode of operation is the STANDING-WAVE-FEEDER, together with a balanced or symmetrical antenna-tuner. It means in this case, that the use of standing waves is the best way for a highly efficient feeding system. This is completely different to the coax-feeder, which works better without standing-waves.

WHY? The coax-cable insulation - mostly polyethylene - is stressed by the RF-field between the center conductor and the shield and converts a small energy amount to warmth. This depends directly of the frequency in use: the higher the frequency, the higher the loss! In addition to this, this loss is increased considerably by a bad SWR-figure. There are enough statistics for this effect in the amateur-radio litterature! Unfavourable SWR-values are occuring normally with coax-feed resonant antennas and the impression that a correction of such bad values by a tuner is an error: the good values are referring only with respect to the tranceiver output, but are not at all improving the bad SWR along the coax!

The ladderline is 99%-air-insulated and has practically NO-LOSS! And by the reason, the STANDING-WAVE-APPLICATION is absolutely without negative influence to the efficiency of the feeder, just in contrary to a coax-cable.