Cecil Moore wrote:
Gene Fuller wrote:

Cecil Moore wrote:

Take two PSK signals, superpose them through the same coax,
and see how much information is lost.


Strike two!
More demonstration that you don't understand superposition.


Actually, more demonstration that you shy away from technical
discussions in favor of inuendo. One wonders why? Please feel
free to enlighten me and others about how phase is conserved
during the superposition process.

Cecil,

There is nothing in the concept of superposition that will prevent you
from munging up something. I have no idea how you are planning to
"superpose" two signals through the same coax, and therefore I have no
idea what might happen to the phase.

Go back and review what superposition means. I have stated it here
before. It is a standard concept presented in many math, science, and
technology textbooks. In simplified form, when superposition applies it
says that the output from the combination of two inputs is the same as
the sum of the outputs from each input taken one at a time. This is
precisely what allows all of the various authors to say that one can
consider a standing wave to be equivalent to two opposite direction
traveling waves. This is purely a mathematical notion; superposition
does not impact the physical reality at all.

Superposition does not always apply. Only systems that are linear can be
expected to exhibit superposition properties.

If you choose to add a second input that was not there previously then
the combined output will be different than the output from the original
single input.

I didn't know I shied away from technical discussions. I thought you
were quoting me as one of your gurus when it was convenient.

73,
Gene
W4SZ