Dave wrote:
lets have more fun... the 'standing wave' isn't really a wave at all. it
doesn't move, it doesn't transfer energy, it really doesn't do anything
except sit there.... and part of the time it doesn't even exist, being zero
at all points along the line at the same time when the two traveling waves
cancel each other. so i propose that the term 'standing wave' is a complete
misnomer and in fact is probably an oxymoron and should be abolished, along
with the term 'standing wave ratio' and the infamous (at least in the news
group) 'swr meter'!

Like a traveling wave, a standing wave changes phases except at the nodes.
In fact, by looking at only one toroidal pickup at one point on the line
(anywhere except a node) you cannot tell if that current wave is standing
or traveling or both.

And the standing wave does transfer energy from the source to the I^2*R
losses in the transmission line. That's why feedlines with high standing
wave ratios are lossier than matched lines.
--
73, Cecil http://www.qsl.net/w5dxp



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