How good/bad is my signal strenght? - AVS Forum
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Old 08-05-2012, 10:04 AM - Thread Starter
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I'm doing some home theater management for my parents; they want both Comcast HDTV and Comcast internet coming to their HTPC in the living room. The problem is, there is only one cable jack in the living room. Right now I have the following configuration:

Living room coax jack ---> modem ---> router ---> ethernet ----> HTPC
Dining room jack ---> 50' coax cable ---> set top box ----> HTPC capture card

My parents obviously don't want a 50' cable stretched out across the floor and they're also unwilling to run in under the floor because they don't want to drill a hole in the dining room. It seems like the only remaining option is a cable splitter. I went to Wal Mart and bought a General Electric 2.5 GHz splitter, and the internet TV streaming service became very poor (SD channels had artifacts, HD channels wouldn't play at all). I checked signal strength on the modem and the results were as follows:


No splitter:

Downstream
Signal to noise: 35-36 dB
Power level: -9 dBmV
Upstream
Power level: 34 dBmV

Splitter:

Downstream
Signal to noise: 34 dB
Power level: -14 dBmV
Upstream
Power level: 38 dBmV


I don't know anything at all about what kind of power level is acceptable; are the post-splitter values significantly worse? If so, is there a type of cable splitter that will work better?
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