AI4QJ wrote:
"Roy Lewallen" wrote in message
...
AI4QJ wrote:
. . .
(I sure am learning a lot about antennas and transmission lines here)
I'm glad to hear that. 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?

Roy Lewallen, W7EL

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?

Sure, you can do anything you like. But can you tell the boxes apart by
measuring at just one frequency (the one at which their impedances are
the same)? Do they have the same or different numbers of "electrical
degrees" at that frequency?

The fourth box was my proposal, a box containing a capacitor with the
same reactance as the contents of the other boxes, and which I claimed
couldn't be distinguished from the others.

Roy Lewallen, W7EL

Roy Lewallen wrote:
Sure, you can do anything you like. But can you tell the boxes apart by
measuring at just one frequency (the one at which their impedances are
the same)? Do they have the same or different numbers of "electrical
degrees" at that frequency?

I'll do you one better with one more unreasonable condition.
Let's see you do it without applying any source power.
--
73, Cecil http://www.w5dxp.com