Use a two-way splitter of at least 1000MHz for your initial split. Feed one line to your cable modem and the other to any other splitter to feed the TVs.<BR><BR>Most brands of cable splitters are ...

Your cable modem would go on the -3.5db leg (this is effectively 2x 2 way splitters cascaded with the 3.5dB path being one of the outputs from the 1st splitter) ...

GE Digital 2-Way Coaxial Cable Splitter, 2.5 GHz 5-2500 MHz, RG6 Compatible, Works with HD TV, Satellite, High Speed Internet, Amplifier, Antenna, Gold Plated Connectors, Corrosion Resistant, 33526 ...

If your business gets cable TV and high-speed internet access from the same company using the same line, you can use a coaxial splitter to connect your internet router and one or more cable boxes ...

A splitter reduces the signal by at least 3.5 dB, which results in two signals with less than half the power of the original. Some splitters have even more loss.