by winegard » Tue Dec 06, 2011 12:46 pm
Good morning sagebum,
Trying to combine TV signals from an antenna with the TV signals from a cable company onto the same cable is impossible because channels 2-13 are the same frequency both on cable and antenna, so you will wind up with 2 channels on the same frequency. As for the UHF channels from the antenna they will not be able to be combined with the cable because the cable company has those frequencies filled up with their cable channels.
About the only way you can have TV antenna signals and cable signals at a TV set is if the TV set has two separate inputs for cable and antenna, which will allow you to switch inputs internally. With the new TV sets you have to do a channel scan for cable and then do a channel scan for antenna so you need separate inputs otherwise if you use an A/B switch to select between antenna and cable you have to rescan the TV sets channels each time you switch inputs.