If you do not watch TV, you can have your socket sealed, which proves to Billag that you cannot watch TV. Unfortunately they also classify computers as capable of receiving TV signals. Plus most likely you *should* still pay for Radio, if you have a car with inbuilt radio or a mobile phone that can receive those signals too..

The cablecom and billag fees have nothing in common. Billag charges you for the right to receive/watch/listen to Swiss public broadcasting.