When talking about security cameras, we will think of RG59 cables and BNC connector for CCTV. RG59 is a typical CCTV cable, and BNC connector is one of the most common CCTV connectors. But do you know what does a BNC connector mean? How it works with a RG59 coax cable? What's the function of a BNC connector? How many BNC connector types are there? To help you find the answers, we will show you five facts about a BNC connector in the following passages.