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reply to mrb530
Re: Cable tv and cable modem wiring Diagram If you wired the house yourself, what kind of coaxial cable are you using - brand, catalog/part number, RG6, RG59, number of shields, etc? And, what about termination fittings? Furthermore, what is the make and model of your splitter? Some splitters are pure junk and may actually cost more than really good ones. You should be able to get two two-way splitters from your local Comcast office for free or flag down a truck and maybe get a three way. My local office didn't have any splitters having more than two outlets when I rewired. Comcast here uses Extreme Broadband splitters, but other regions may use other brands of equal quality. The splitter should have a frequency range of 5 - 1,000 MHz. Two two-way splitters will give you the three outputs as telcodad showed - two -7 dB outs and one -3.5 dB out.
There is nothing more deceptive than an obvious fact.
Sherlock Holmes in
The Boscombe Valley Mystery
A. C. Doyle
Strand Magazine, October 1891
Thanks for your help That what I needed Mark
said by Streetlight:Yes, if you get only two 2-way splitters (or your cabling arrangement requires two splits in different areas of your home), as Streetlight suggested, here is how to connect them:
You should be able to get two two-way splitters from your local Comcast office for free or flag down a truck and maybe get a three way. My local office didn't have any splitters having more than two outlets when I rewired.
Two two-way splitters will give you the three outputs as telcodad showed - two -7 dB outs and one -3.5 dB out.
---> 70' cable to the farthest TV
--> 1st 2-way splitter
---> to 2nd 2-way splitter < Modem and other TV(s)
It's best to avoid using an amp if possible. Unless you have a lot of splits to feed a large number of boxes in your home, you should not need to use one.
If the signal levels are low entering your home, you need to call Comcast about that and have a tech check it out.
If after replacing the splitter(s) and cables with high-quality ones, you still have a signal level issue with the farthest TV, then placing a good-quality bi-directional amp right after that splitter output then may help (you want to avoid using an amp on the cable modem's line). Besides the amp that jack b suggested, you can check out some other ones that were recommended in this thread: »[DVR] Which AMP to use
Thanks for the info Mark