I hardly ever find it on the center conductor I have seen techs who think they found it there by testing the stinger against the shielding of the cable but when prompted to test center conductor to ground wire after disconencting the house side from the ground block it showed nothing on the stinger and that the voltage actually was coming from the shielding. This is usually a bad device inside the house, but sometimes its a bad power system. For this reason I do not play around with hiding it by using power blocks, or groudning the outlet before the splitter. It can be a deadly game, and hiding it from the sub is simply stupid and silly. If I find voltage on a line I will quickly change the device and test again if its still there, I will run a temp wire to the device through the house, if its still there after that its THEIR problem and THEY need to get it fixed be it buy a new TV, or hire and electrician thats their problem the outlet gets DISCONNECTED, and the account gets noted, and thats the end of it. They can do whatever they want at that point except get it reconencted until they get it fixed.
That said I have no knowledge of the physcis of the situation other than a device is using the catv shield path to ground instead of the power systems, sometimes the device is just bad, sometimes the power is. If it is on the center conductor this is a different deal something is adding it to the line of overcharging the capacitance between the two conductors.
Reading for fun if you are interested that may help you understand how 60Hz AC power can interfere with other frequencies such as those that run the return for modems/docsis STB's..
http://www.ospmag.com/issue/article/112007-Bad
Re: Voltage on Center Conductor from House
Member #: 90744
Registered: 12/11/2012
Posted:
20
Name:
D
Company:
CC
Occupation:
CT4
Location:
Hell
Personal:
early 50s
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