Cecil wrote,

Ever measure the forward and reflected currents halfway into a
shorted 1/4WL stub? How can currents be flowing unimpeded into
and out of an infinite impedance?


In the case of a lossless, 1/4WL stub, (no such thing, except on this
newsgroup) in the steady state you can disconnect the transmitter and
the currents will still be there. Current doesn't flow, Cecil, charge flows.
Current is just the rate of flow of charge, dQ/dt. In a 1/4WL stub, charge,
and the fields associated with it, are in a state of oscillation. Over time,
their average movement in space is zero. It's too bad you have to think of
current
as like the water in a big river that has to flow from one place to another
in order to exist. (That's wrong, too. Current in a river is the rate of flow
of
water past a point, not the water itself.) Sloppy semantics sure screw up
understanding.
73,
Tom Donaly, KA6RUH