Re: Telephone and Electric Fence Interference

Posted by T_Bone on January 28, 2005 at 07:35:08 from (4.240.42.70):

In Reply to: Re: Telephone and Electric Fence Interference posted by Tim...OK on January 27, 2005 at 09:11:16:

Hi Russ,

I'm with Tim as a bad ground can cause alot of problems. I ran some radio equipment that was getting into the neighbors phone line so bad he had to hang up when I was on the radio. Neighbor never said a word to me but had the phone compnay out very often.

Neighbor is moving so I asked him why? He said his wife couldn't talk on the phone because of my radio. Gees I felt bad as all he had to do was say something to me and I could have cured the problem.

The problem was I was the first house on a culdesac and the power company ran the main feed from the transformer in a circle around the culdesac to each house. They had a bad ground and the phones were grounded to this bad ground.

Had he told me, I would have installed a seperate ground. I did for the new neighbors, and that solved all the problems until it effected the power then the Utility company came in a repaired the bad ground.

If in fact it's the fence charger (disconect the charger as see if the problem is still present), get a ferrite coil from Radio Shack, about $3, and wrap/loop (3 or 4 wraps) the negitive lead of the fence charger around the ferrite coil. You might also have to put one on the positive line. Make sure the ground is clean and tight on both the ground rod and charger. That should stop the line pulse noise.

If not install another ferrite coil on the power feed to the fence charger if it's AC supplied.

If that doesn't help or lowers the noise then you might have to install a isoulation transformer on the AC supply to the charger. Install ferrite coils on the load side of the transformer supply wires. Transformer runs about $20.

Some AC line noise bothers HVAC puter equipment and I've had excellant luck with just adding a isoulation transformer.

T_Bone

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