"Keith Dysart" wrote in message
...
On Dec 23, 11:33 am, Roger wrote:

You are basing this conclusion on the observation that Power = V*I, and
because we can not detect V or I at some points in the standing wave,
then V*I is zero at these points. Correct math, but wrong conclusion.

Are you really saying that if I measure the instantaneous
voltage and the instantaneous current then I can NOT multiply
them together to obtain the instantaneous power?

It certainly works some of the time.

If I can not do it all the time, when can I do it?

you can do it when it makes physical sense. it does not make sense in
standing waves for all the obvious reasons that i have pointed out. it does
make sense in the individual traveling waves. just accept what your little
swr meter tells you, it shows the forward power and reflected power, that is
all you need and the only powers that make sense.