All I know is that talking with my friends who work in
TV around the central Kentucky area are laughing at the
pennies saved versus the dollars that will now have to be
spent on upgrades. Kind of a mini Y2K event where penny
wise pound foollis was the logic. Although to be fair from what
I have read in the amphenol catalog, there was no measureable
difference between 50 and 75 ohm in the NTSC universe. Kind
of like a retired cobal programer who was shocked to find stuff he
had written in the early 70' was still mission critical software that
hadn't
been upgraded because "it worked". He made a bundle off that mess.
Non of the recent Computer Science grads couldmake heads nor
tails of 30 year old code.

My TV friends have "funny" stories about when a 50 ohm termination
got into the 75 ohms video system. Pulls synch and video down, and
once you have seen it you are foreverer "learned", but that first time
is
a real dozy!

Terry