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Well, bonus points awarded, the first paragraph nailed what I was looking for.  What happens if two signals (or sign waves) of the same frequency are traveling in opposite directions on the same medium.  A coax environment is where such an occurrence exists in an antenna system, and in that case they create a waveform that has 180 degrees of phase shift in 90 electrical degrees of coax.  Unfortunately the case here isn't exactly the same as a coax, and I'm not sure (at least yet) how to properly chart it.


In this case I have an idea of what would happen, and I may be stretching something to its limits or even beyond here.  Take a look at the charts I posted in my previous post, namely the second one that includes the blue, red, and yellow lines.  If you look at the 1/4 wavelength of the yellow line between the peaks of the blue and red lines, what do you see?



The DB