UPDATE:: I changed 1 to 4 splitter to a 1 to 2, both are given by Comcast technician. My Power Level is reading
-12 dBmV -13 dBmV -12 dBmV -13 dBmV
Now, which I assume much better than when I was using 1 to 4 splitter.
I have 3 questions now:
1- Should I turn off cable modem while changing cable? (I know, very newbie, I never worked with cable)
2- Why there was a slight difference in power when I put modem in right or left output of 1 to 2 splitter!? Should not they give same output?
3- If my power was horrible and comparing it now, so so, why I was still getting full speed from Comcast!? Just curious. I checked power without splitter and it was -9 dBmV, but still gave me same speed of internet!
BCS I AM NOT SURE, THANK POSTS ARE OK, I WRITE HERE IN ADVANCE "THANK YOU ALL"