wrote:

W5DXP wrote:

Jim Kelley wrote:
Nodes and zero crossings aren't necessarily the same thing.

They are for standing waves on lossless unterminated lines,
by definition.

I think not. Standing waves are spatial. At certain points
on the line the (NET) voltage is always zero: nodes.

For the infinite number of times a snapshot of the voltage is
not zero, the node *IS* a zero-crossing point. That is more than
obvious from the JAVA applets on this web page.

http://www.gmi.edu/~drussell/Demos/s....html#standing

In an ideal line terminated by Zo, ...

That configuration is not covered by my statement above which
applies only to standing waves on lossless unterminated lines.
--
73, Cecil http://www.qsl.net/w5dxp



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