gareth wrote:

The forward and reflected waves in transmission lines and antennae do not
affect each other by the principle of superposition (although they act
together to
give an apparent (and only apparent) standing wave.

Why, then, should a transducer connected to one end of a transmisison line
(such
as the PA stage of a TX) be affected by the apparent VSWR, as we know that
it is,
but why does not the principle of superposition apply in this case?

You have energy travelling toward the PA (the eflected wave. It has to be
dissipated. That adds heat to the PA.



Just curious.

(The enquiring mind - the mark of the _REAL_ Radio Ham)

You really should try to use google and look things up that interest you
rather than try to initiate discussions for the sake of discussing
something.