How is UTP different from Coaxial Cable?
Since the wire within Coax is not twisted, then it relies on a physical metallic jacket to resist induced noise. If the coax is run across an electrically noisy environment (along power wires, close to Fluorescent fixtures, etc), then the shield may not be effective in quelling the noise. This shows up as an interference pattern on the monitor, and sometimes can disrupt viewing/recording (see below). Additionally, Coax provides no inherent Ground Loop Protection. If a CCTV system, the Camera end may have a different “Ground differential” compared to the destination. If the differential is large enough, you will typically see distinct dark horizontal noise bars that travel from top to bottom of the monitor. In severe cases, particularly if the destination is a digital device like a Multiplexer/DVR, then it can critically disrupt the signal or recording. This can be particularly undesirable with a DVR, because many optimize their storage by requiring a clean video signal; if it’s not, th