In Reply to: RE: How do I eliminate hum? posted by computerman on June 21, 2012 at 13:41:15:
see this picture:
http://www.hdtvprimer.com/ANTENNAS/grounding.gif
note that in that picture the coax and the home AC breaker box are all on the same ground.
If for some reason your coax is not grounded near your home then it is referencing someother ground in the CABLETV system which will be different from your home ground.
Note that rather than a ground rod, often your home will be tied to a water pipe which hopefully at some point hits an earth ground and is not a plastic pipe.
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Follow Ups
- RE: How do I eliminate hum? - dumpingground 14:52:24 06/21/12 (4)
- RE: How do I eliminate hum? - computerman 18:05:35 06/21/12 (3)
- RE: How do I eliminate hum? - dumpingground 19:44:51 06/21/12 (2)
- RE: How do I eliminate hum? - 66mgb 20:35:53 06/21/12 (1)
- RE: How do I eliminate hum? - 66mgb 20:37:42 06/21/12 (0)