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You are here: MacNN Forums > Enthusiast Zone > Networking > Cable modem performance degrades when coax is split?

Cable modem performance degrades when coax is split?
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Join Date: Dec 1999
Location: Utah
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Oct 26, 2006, 12:10 AM
 
My old house wasn't pre-wired at all for cable, not even from the street. So when I ordered cable modem service a guy had to come out string a coax cable from the pole to my house, and then drill a hole in my wall and basically feed a coax cable into my office. I didn't have cable TV in the house, just internet. So the cable modem was essentially wired right to the pole on the street with no splitters inbetween. At least visible to me.
I just moved, and this house IS pre-wired for cable, there is a coax outlet in almost every room. I just ordered "Self-Install" cable modem access, and am wondering about all the splitting.
According to the instructions you can plug the modem into any coax outlet in your house. Which works, but will performance be increased if I can figure out how to connect directly to the main line feeding into the house from outside? Again, I don't have cable TV at the new place, so the room outlets are unused. For what it's worth I looked around and the wire inside the home is RG-6, but I have no idea the quality of the splitters. (only as good as the weakest link right?)
So anyone know about performance loss when coax is being split however many times inside the house vs. connecting to the main line outside? Does it even make a difference?
I know regardless I'm limited by my provider (now comcast, was Adelphia @ my old place), and they offer different tiers of service. I just didn't know if there was signal degradation from being all spliced up in the home before getting to the modem.
Thanks in advance.
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Join Date: Apr 2001
Location: San Antonio TX USA
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Oct 26, 2006, 08:46 AM
 
You will get the same level of performance from your cable modem from any cable outlet that can successfully drive a TV. Cable modems have input circuits to handle the signal level variations they will encounter, so you don't need to worry about it. And if you DO run into a problem (house wiring can be poor or faulty), then the cable company should come out and at least install an amplifier (the correct one for two-way traffic) so that you get the service you're paying for. THEY are the ones responsible for the signal level that gets to the modem, so THEY should be ready to handle any problems.

But I wouldn't sweat it unless you expect the house wiring to be poor.
Glenn -----
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