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"Cecil Moore"
...a two foot long section of 50 ohm coax
is all the length needed to force the V/I ratio
to be 50 ohms at HF...

Of course, this is only true (in the practical sense) for that brief
interval until any reflections arrive back at the point where the
measurements are being made and all hell breaks loose. It is very obviously
all tied into the meaning of 'characteristic impedance' - there's no mystery
here.

Semantics.

There is often miscommunication(*) about the distinction between the initial
period (before the reflections arrive) and the steady state mess that arises
further along the time axis.

*These can be easily identified - even defined - as any thread that includes
more than about 20 postings by Cecil. ;-)




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