dannyharding 0 Posted July 15, 2017 Hi all, Hope someone can help me I've recently just installed a Swann 4-4575 DVR with 2 HD PRO-T853 Cameras, and for ease I have put in 2 Cat5e cables in (1 for each camera) the furthest run is about 30m more or less, and using quite cheap baluns from ebay at either end. When I connect the 1st camera the picture is okay not perfect is a little bit hazy but no visible interference. As soon as I power up the second camera, interference shows up on the 1st camera. If i connect the second camera by itself it still is a terrible picture with horizontal lines scrolling down the screen. Things I have tried: 1. 3 separate plug PSU's for each camera and DVR (same problem). 2. fitting a isolator on the second camera. (makes no difference). I've done a bit of googling and seen you can buy "HD Baluns" but do they really make a massive difference over 30m? Also just mocked up a test camera using 300m drum of cat5e using these baluns but camera is not HD and baluns held up fine, so I'm really confused. Cant say I've tried putting a non-HD camera on the set up yet to see if it makes any difference. If anyone else has any ideas what it might be would be very grateful. Share this post Link to post Share on other sites
