I want to build a circuit to send a signal from a CCTV cameras BNC output to twisted pair and at the other end convert back to BNC for the monitors input. I have a cat5E wire ran between the two, but no coax. It would be too difficult to pull in new wire. I know they make these converters or baluns that you put at each end, but I don't know what is inside them. I also know that they require no additional power source. I guess they are line powered. I can't find a circuit anywhere. Can someone please help?
I want to build it myself instead of buying it.
I want to build it myself instead of buying it.