I emailed Samsung because it's free. Also, ANYTHING they say I will find a use for, including their not replying (=don't bother with another Samsung security product).
As for the cable, if it is "shielded", as they say, then it sells at a pretty fair price:
60ft cable This outfit even sells connectorised 1000ft cable:
web page The bundle itself was inexpensive, and very easy to set up and use. This was the first time I did anything involving cctv and the ease of use and quality impressed me. Otherwise I wouldn't be asking. I will take a cable apart and examine it when I have the time.