Trying to set up an external antenna to access regular broadcast stations to my Samsung TV (un55mu7000f) and I am not seeing the option to access it.  According to the guide, I should be able to click the "Home" button on the remote and then I should see a "Live TV"option - but I do not see that. Choosing "Source" from settings doesn't give me any choices for antenna either.  Any help would be appreciated.