I'm getting DTV installed tomorrow. My set up will be 4 rooms including a dual-tuner Tivo, so they will be installing a 4x8 switch. I also bought a Terk TV42 antenna to use with the new setup. (So I can get Canadian OTA channels.) It just ocurred to me that the switch complicates the installation. Am I right in assuming that I need to separate the OTA signal from the satellite signal before it hits the switch?