Frequency for HSI???

[wobbie]

I have Cox High Speed Internet and would like to use a dyplexer for the computor and TV in the Den. I have been told that Cox runs the internet thru Channel 86. Does anyone know the frewuency for that channel and where I could get a dyplexer. I have been told that a standard dyplexer will not work due to the frequency of the internet being too low for a standard dyplexer.