Cecil Moore wrote:

Jim Kelley wrote:
Reflection coefficients are determined by characteristic impedances, not
virtual ones.

On the contrary, the reflection coefficient, rho, at '+' in
the example above, is NOT determined by the characteristic
impedances.

I just showed you how characteristic impedances are used to calculate
the reflection coefficient at '+'. But you can wish it into the
cornfield if you like, Anthony. :-)

(150-50)/(150+50) is
NOT rho.

Is it the reflection coefficient for a 50 ohm to 150 ohm impedance
discontinuity?

I was mistaken to call that quantity "rho" in my article.
That quantity that I called "rho" is actually 's11' and I need to
update my article.

Since S-parameters were never even mentioned in your article, updating
it seems an understatement.

73, Jim AC6XG