TV Tuner + Cable Modem = RG6 Amplier

I’m wanting to run a tv tuner to my desktop. However I run my cable modem from the jack I want to use. When I plug in a splitter my cable modem loses the signal, thus losing internet access. Will buying an RG6 amplifier/splitter resolve this.

Amplifiers also amplify the noise on the cable. Better ask your cable company and your internet service provider on what to get. Make sure you ask them both.

Open a browser and go to Choose the ‘Signal’ tab and post the upstream and downstream signal levels here and I can better answer your question.