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?