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ISP Said there was signal coming from my house (alien.top)

submitted 1 year ago by Whipitreelgud@alien.top to c/homenetworking@selfhosted.forum

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My ISP is cable. Called and said they needed in my house to find the source of the signal that was affecting everyone else in my neighborhood. Literally nothing had changed and my house has been connected since 2010.

The tech arrived and I had them start outside. He replaced every connection/coupling and kept testing. After all of them were replaced, his testing machine showed a perfect signal. Noise eliminated. I was not charged for this service.

I found this baffling. My neighbor’s coax connections affect me?

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[–] bippy_b@alien.top 1 points 1 year ago

If you have any MoCA adapters and you don’t have a filter on your house.. you might be sending that info out over the wire. I had that happen once.. using MoCA adapters. Cable guy calls me and says I am putting out “stuff” into the system. I happened to be on vacation at the time.. told him I would be back next week.. I added an adapter inside my attic before the coax went out to the neighborhood and asked them to check again.. they never responded and never came back.

Then years later (maybe 1 year ago) when a guy came over to re-run my line out to the box (I think neighbors lawn people cut it).. he slapped a MoCA filter into the connection box and said they were standard/required now. So I was able to remove the one in the attic.