patoz
Expedition Leader
Those RCA cables are simple two-wire cables with the RCA coaxial connectors at the ends,
This is incorrect in most cases. Audio and video cables are generally made out of shielded coaxial cable.
![cable_anatomy.jpg](http://www.hometheaternetwork.com/pics/cable_anatomy.jpg)
The braided/foil shield is there for a reason. Any wire connected to the input of an amplifier (video or audio) can act as an antenna and pick up any electronic interference in the area, such as engine noise (electronic), other equipment, computers, etc. The shield is there to block that interference.
There is cable available that is designed to carry both audio and video, as well as power. It is designed to carry both, while preventing interference from surrounding signals as well as the power leads themselves.
![CBL-SIA SPOOL_M.jpg](http://www.aventuracctv.com/photos/products/CBL-SIA SPOOL_M.jpg)
Some home and business security systems utilize wired cameras that are connected via a POE (Power Over Ethernet) system. These cameras are wired using CAT 5 or 6 Ethernet cable and get their power from a Network Switch.
![poe-explained-one-diagram-two.png](http://www.veracityglobal.com/media/78161/poe-explained-one-diagram-two.png)
My advice, if you want it, is to utilize the extension cables offer by the company you get the system from. If you plan on buying individual components and building your own system, then you need to use the proper cable for the job, which is shielded audio and video conductors with additional conductors for power. I would NOT try to use plain multi conductor cable to carry the audio and video signals, unless you want to have to deal with a lot of interference also.