AI4QJ wrote:
"Roy Lewallen" wrote:
Does the new knowledge include a way to tell the
four black boxes apart at one steady state frequency, or how many
"electrical degrees" each one contains?

Where did the extra black box come from and who made the restriction on
frequency? I should be able to use any voltage or frequency I want, don't
you think?

Just raise the stakes, Dan. Challenge Roy to prove the
impedance is -j567 without applying a source signal.

I wonder what is the ulterior motive in arbitrarily
handicapping the person doing the measurements?

Roy mentioned the TDR for the other problem. Seems a TDR
is exactly the instrument needed to find out what is in
each of those black boxes. Or just order the black boxes
already specified with its s22 parameter stamped on the
black box.
--
73, Cecil http://www.w5dxp.com