Jon wrote:
I am having persistent problems with coaxial cable connectivity with
my cable modem.

It has to go through a splitter. I thought I got the best when I
bought a broadband splitter fro Radio Shack for $20.00, but it is no
better than the cheap model I have on it now.

My cable company is happy to give me the quality cables and splitters that they
use, without additional charge.