On 13 May 2005 09:41:26 -0700, 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.

Terry

Pacific Radio has always specialized in 75 Ohm BNCs. They are THE
place to go for that sort of thing in the Television Capitol of the
World. And they had them well before the year 2000.

http://www.computermodules.com/broad...aster-fd.shtml

The worst thing that ever happened to TV is stupid coaxial ethernet.
Before then, 50 Ohm BNC jumpers were very rare. I don't know anything
about Trompeter patch bays. We always use ADC.