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Well; no it wasn't found on that page and neither am I defending it.
Don't exactly remember where I read about it either.

But it does made sense that at 0, 180, and at 360 degrees of a wave that it is neither phased positive or negative. Just neutral points when looking at a graph of a single wave cycle.

Since all coax has some difference in velocity factor; then a 1/2w of coax with a .66 vf should have a different length than a piece of coax that has a velocity factor of .86. IIRC, the RG-213 used in the scenario has a vf of .66

So if both principles are true; then it should be so.
Makes sense to me.

How is that voodoo; how are these premises wrong?

On another issue already brought up by another poster, the scenario you proposed gave no mention of the amount of RF power being fed into that circuit. IIRC, coax can absorb so much reflected power over a given length before it gives off the extra reflected energy as heat (I x r). Which means as power increases, that same 500 ft piece of coax would probably show a different SWR at the shack meter as well as have a rise in heat.

<blockquote data-quote="Robb" data-source="post: 434083" data-attributes="member: 8446">Well; no it wasn&#039;t found on that page and neither am I defending it.Don&#039;t exactly remember where I read about it either.&nbsp; But it does made sense that at 0, 180, and at 360 degrees of a wave that it is neither phased positive or negative.&nbsp; Just neutral points when looking at a graph of a single wave cycle.&nbsp; Since all coax has some difference in velocity factor; then a 1/2w of coax with a .66 vf should have a different length than a piece of coax that has a velocity factor of .86.&nbsp; IIRC, the RG-213 used in the scenario has a vf of .66So if both principles are true; then it should be so.Makes sense to me.How is that voodoo; how are these premises wrong?On another issue already brought up by another poster, the scenario you proposed gave no mention of the amount of RF power being fed into that circuit.&nbsp; IIRC, coax can absorb so much reflected power over a given length before it gives off the extra reflected energy as heat (I x r).&nbsp; Which means as power increases, that same 500 ft piece of coax would probably show a different SWR at the shack meter as well as have a rise in heat.</blockquote>

[QUOTE="Robb, post: 434083, member: 8446"] Well; no it wasn't found on that page and neither am I defending it. Don't exactly remember where I read about it either. But it does made sense that at 0, 180, and at 360 degrees of a wave that it is neither phased positive or negative. Just neutral points when looking at a graph of a single wave cycle. Since all coax has some difference in velocity factor; then a 1/2w of coax with a .66 vf should have a different length than a piece of coax that has a velocity factor of .86. IIRC, the RG-213 used in the scenario has a vf of .66 So if both principles are true; then it should be so. Makes sense to me. How is that voodoo; how are these premises wrong? On another issue already brought up by another poster, the scenario you proposed gave no mention of the amount of RF power being fed into that circuit. IIRC, coax can absorb so much reflected power over a given length before it gives off the extra reflected energy as heat (I x r). Which means as power increases, that same 500 ft piece of coax would probably show a different SWR at the shack meter as well as have a rise in heat. [/QUOTE]

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