Tom's Guide > Forum > Home Theater > Digital TV > Is it ok to split cable tv and internet on the same coax line?

Is it ok to split cable tv and internet on the same coax line?

Forum Home Theater : Digital TV - Is it ok to split cable tv and internet on the same coax line?

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tgriff   07-31-2009 at 09:11:18 PM

I recently had Time Warner install cable TV and Internet service in my house. I asked the install tech if it was possible to split the coax at the wall so I could have the cable modem and set top box located at the same place in the house.

He declined my request saying that they only allow that in apartments and not residential houses.

My questions are:
1. Will there be any issues in splitting the coax and having both the modem and dvr operate off of the same line?
2. If it is possible, is there anything I have to consider when buying a splitter?

Thanks in advance, and I look forward to everyone's input on this.

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Wolfshadw   07-31-2009 at 10:20:05 PM
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You shouldn't run into any problems, but I can't speak for Time Warner cable. I'm using Comcast and I have the line from the wall is split three ways:

1) Cable Set Top box (sits in the lower shelf of the entertainment center)
2) Cable modem (sits in back, top shelf of the entertainment center)
3) Wall pass-through to the bedroom HTPC

I haven't experienced any problems at all with this setup.

-Wolf sends

------------------------------ System Specs:
Gigabyte EP43-UD3L Intel Core2Quad Q8400 8 Gig RAM
NVidia Geforce 8800GTS-640/Creative X-FI Extreme Music/Dual-Boot XP-64&Server2008
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tgriff   07-31-2009 at 10:35:35 PM
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Wolf - Thanks for the feedback on your experience. Quick follow up question: Do you have HD service with an hdtv tv, and if so did you notice any quality loss after splitting the signal?

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Wolfshadw   08-01-2009 at 12:40:00 AM
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I didn't get HD Service or my HDTV until after I moved in and set up the splitter, so I couldn't say. Sorry. HD still looks good to me (720p).

-Wolf sends

------------------------------ System Specs:
Gigabyte EP43-UD3L Intel Core2Quad Q8400 8 Gig RAM
NVidia Geforce 8800GTS-640/Creative X-FI Extreme Music/Dual-Boot XP-64&Server2008
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rexter   08-08-2009 at 03:38:54 PM
- 0 +

tgriff wrote :

I recently had Time Warner install cable TV and Internet service in my house. I asked the install tech if it was possible to split the coax at the wall so I could have the cable modem and set top box located at the same place in the house.

He declined my request saying that they only allow that in apartments and not residential houses.



Ha! The technician is lazy. You can actually ask your cable/internet service if it's the same provider to put the modem where you want it.

Check the modem connection and if you see a splitter then remove that splitter and use a coupler to connect the input wire and one leads to the TV, then use the splitter where you want your modem. It should have something like 130db RFI and -3.5 to -7 db on the output port like this one http://www.sears.com/shc/s/p_10153 [...] e+splitter notice the frequency and the db output? Connect your TV to one with higher frequency.

Some splitter like this one http://www.newegg.com/Product/Show [...] -%20Retail is not good quality.


Message edited by rexter on 08-08-2009 at 03:43:39 PM
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