AI4QJ wrote:
"Cecil Moore" wrote in message
...
wrote:
It isn't just "any" -j567 ohm impedance
that can cause resonance with a 43 degree 600 ohm line.
Dan, I believe you will find that any -j567 impedance
in the black box will put the forward and reflected
waves back in phase, i.e. resonant.
OK but if you can measure Zo of whatever is in the box, then you know the
length by virtue of it being -j567. It should only take 2 terminals to
measure Zo.
Knowing Zo, then I can normalize the smith chart and directly read the
electrical length in degrees. True, it would help to know that the box
contains a transmission line.
The "other side" will not allow you to assume a transmission
line. The "other side" will not even allow you four terminals
on your black box. The entire purpose of the black box, in this
present context, is to confuse and confound the unwashed masses
so the "other side" can maintain their guru status.
--
73, Cecil
http://www.w5dxp.com