Gyro Gearloose 0 Posted October 11, 2007 I just found out that many suppliers are sending 50 ohm BNC's out in either 2 or 3 part connectors when you don't specify rather than the 75 ohm that I assumed that I was getting. They are just a little cheaper and you know how price usually sells. What performance difference is there if any? Can you visibly see it or is it just hard on the equipment because of an impedance mismatch? Connection camera to DVR - Both specify 75 ohms Connection to monitor Does cable run length make a difference? Share this post Link to post Share on other sites
survtech 0 Posted October 11, 2007 Performance difference - little or none. Be careful that the connectors actually fit on your cable properly, though. 50 ohm cable is typically RG-58, which is smaller in diameter than RG-59 and often has a smaller center conductor. Cable length only makes a difference when over 400-500 feet, assuming you use high-quality copper/copper RG-59 or better. Mini coax and clad RF cable will see performance suffer after 100 feet or less. By the way, nice name. I used to use that handle years ago. Share this post Link to post Share on other sites
