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Old May 25th 04, 04:28 PM
Jim Kelley
 
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"Cecil Moore" wrote in message
...
That's a steady-state shortcut which assumes pure sine waves that
don't exist in reality. Please don't confuse steady-state shortcuts
with reality. Noise and modulation cause the "steady-state complex
impedance" not to be steady-state at all. Many will say it's close
enough, but one cannot understand reflections by assuming an un-
varying steady-state.

In a TV system with ghosting due to reflections, the unvarying steady-
state condition doesn't exist. In fact, when you assume steady-state
conditions, you eliminate ghosting, at least in your own mind. In
reality, steady-state doesn't really exist because of random noise
and unpredictable modulation.


The more you talk about 'steady-state-, the more apparent it becomes that
you don't really understand what it means.

73, Jim AC6XG


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