WireGuy1950

New to the forum, and I don't know too much about CCTV either. We are trying to resurrect an old Samsung SSC-21 system. The cameras use the 6-pin RJ11 Plug, power, video and common, the video is a shielded white wire in the cable. My question is, how far can you extend the wiring, we need one camera at the far end of the building I estimate that the wire length would be at least 600 ft. I could intercept the wire and add another power supply (12VDC) if I had to or would I also need to boost the video?

Thanks for the info guys. I believe you are correct in saying that this system is probably not worth the effort or expense. Therefore we will see about getting a new style system with DVR and better cameras. Thanks