Re: An unusual Oscilloscope phenomenon
- From: Jim Thompson <To-Email-Use-The-Envelope-Icon@xxxxxxxxxxxxxxx>
- Date: Wed, 01 Jul 2009 10:24:37 -0700
On Wed, 01 Jul 2009 12:52:39 -0400, "Michael A. Terrell"
<mike.terrell@xxxxxxxxxxxxx> wrote:
"Charlie E." wrote:
What's fun is when you tie your local audio system to the cable TV
public access feed, and the hum is at -5dBm! Who know WHERE that TV
cable is grounded, if ever... ;-)
Supposedly, it is bonded to the same ground as the AC lines they
share the pole with. Copper thieves steal so much ground wire these
days, its almost impossible to maintain good grounds.
Charlie
I cured all my hum problems with "Ground Loop Isolator - by Xitel".
...Jim Thompson
--
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