In article om, wrote:
Take a look at:http://sosnick.uchicago.edu/BNC_50_75.html
And then look at the BNCs on your equipment.
Unless all of your cables and equipment is new, as in since
~2000, I bet you have a lot of 50 Ohm BNCs in your facility.
It is real simple: plastic "inserts" in the business end mean
you have a 50 Ohm BNC. And for analog/NTSC it doesn't
matter.
I didn't know they made 75 ohm BNC connectors.
I have an assortment of microwave connectors and the easiest way to tell
the difference between them is to look at the air gap from center to
outer conductor.
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